HOW TO USE THIS MANUAL

CONTENTS

This servloe mallUaJ de&cribes tile service procedures /of the CRFSOF

GENERAL INFORMATION

Follow the Malntenal"lOe Schltdule (Sedion 3) recommendaltoos 10
ens.url:l ilia! the \/elide illn peale. operat;,.g conditton and !he em<$$IOn
I8wIs are vmhin !he aIaodard set by !he U 5 EO'M.omental PrOlec1ioro
Age«;y (EPA) and Cel!lomia Air Resources Board (CARB)
F'Irrfoomng the Hnil scheduled maIntenance 1$ .-.ry Importanl "
comp&nS8tes lor the n.r..1 wear thaI occurs dumg the break·," penod

MAINTENANCE

5ections \ and 3 apply to the wnole motorcycle SectIOn 2 Illustrates
proced!Jres for removaV",staliabon 01 components thaI may be reqUired
to perXlm1 selVice duct,b&d in the 1oI1ow'f1g $&Cllon"
Section 4 through 14 describe parIs 01 the moIorcyde. grouped
according to Mx:a1iOfl

LUBRICATION SYSTEM

rod !he secbOO you waN on tIu$ page. men tum to the table 01 conlants
on the Ii<$I page 01 the MCIion

MosI sactlOllS SIan wUh an assembly 01 ')'SIlIm iIIusIr.l1ion. servICe
informabOrl and IroobIes/looI,ng /0. !he S8d!OO The subseqlll!nt pages
give detailed procedVre$
II you

know !he 1IoOU1C8 01 tile trouble , go to SecIIOO 16
TroubIeshoo!lfIg
dO~

;:;

'....w"
a:
~

a:
c
c

z

ENGINE REMOVAUINSTAllATION
CYLINDER HEADNALVES
CYLINDER/PISTON

'zw"

CLUTCH/GEARSHIFT LINKAGE

z

ALTERNATOAICAM CHAIN TENS lON ER

;;
'I'our safety, and the salllly 01 0Ch&rs. if, YefY Oriportant To help )'OU
makil inb"med 08eiI!0nI we have pfOYlded safety messages and
oth&r inlormallon truOl,<ghou! tho. mat\tlfll 01 course, ~ 1$ not
1)f8ctlC81 Of possible to warn you a.bout all tile hazards IISSOC1ated

FUEL SYSTEM

w

CRANKSHAFTITRANSMISSIOWKICKSTARTER

wolh servleir.g mus vehicle
You must use your own good judgemafll
You writ lind impo<tanl safety inlorrnallOO in • variety of Iorms

REAR WHEEUBRAKEISUSPENSION

inclUding

• Safllrv LaDe" - on the vetude
• Safety Massages - preceded by • saJely alert symbol .l.. and
one at Ihree signal words, OAJlfGEA. WARNING_

Of

CAUTION

These sqlal wotOs mean
You WILL be KILLED

IGNITION SYSTEM

rgt"'ntli;'

Of SERIOUSLY
HURT ~ you don'lloIkM- InSlrUCIKlrIS

WIRING DIAGRAM

m 'bn W"fit!

You CAN be KILLED or SERIOUSLY HURT
II you don', tallow InslrUcttons_

TROUBLESHOOTING

"ew'''lIlf'

onSlrudJOn$

You CAN be HURT

~

you don't

IoIIow

• InstrUCIIOOS - how 10 .servICe mill YeI10CIe OOITectty end salary

As you read this manl,llll , you wl lll,1l(! in!o<mll!'On thai IS preceded by /I
NOnCrl symbol . The purpose 01 lhls message is to help prevent
damage to YOUl \/Ilhocte. O1I1er Pfoperty, or ttle envuonmenl

INDEX

SYMBOLS
The symbols used throughout this manual show specific service procedures. II supplementary information is required pertaining to
these symbols, It will be explained specifically In the text without the use of the symbolS.

g

"78

-

78

-

Replace the part(s) with new ooa(s) before assembly.

Use recommended engIne oil, unless otherwise specified.

,
Use molybdenum 011 solulioo (mixture 01 the engine 011 and molybdenum grease in a ratio of 1 : 1),
I

s;;;..

Use multi-purpose grease (lithium based multi-purpose grease NLGI #12 or equivalent).

....

Use molybdenum disulfide grease (containing more than 3% molybdenum disulfide, NLGI #2 or
equivalent),
Example: MoIykoteil BA-2 plus manufactured by Dow Corning U.S.A.

- -

Multi·purpose M-2 manufactured by Mitsubishi Oil, Japan

Use molybdenum disulfide paste (containing more than 40% molybdenum dIsulfide, NLGI #2 or
equivalent).
Example: MolykoteQII G-n Paste manufactured by Dow Corning U.S.A.

~

Honda Moly 60 (U.S.A. only)
Rocol ASP manufactured by Rocol Limited, U.K.
Rocol Paste manufactured by Sumlco Lubricant, Japan

-

-

...-'iiSIII

a. u
,J"1l!1Il

I

..

Use silicone grease.

Apply a locking agent. Use a middle strength locking agent unless o therwise specified.

Apply sealant

Use DOT 4 brake lIuid. Use the recommended brake ftuid unless otherwise specified .

Use Fork or Suspension Fluid.

1. GENERAL INFORMATION

•
SERVICE RULES ............................. .. ............. 1-2

CRANKSHAFT/ TRANSMISSION/
KICKSTARTER SPECIFICATIONS .... · ........ · .... 1-8

MODEL IDENTIFiCATION .............................. 1-2
GENERAL SPECiFiCATIONS .. ·.......... ·...... ·.... 1-5
LUBRICATION SYSTEM SPECIFICATIONS · 1-6
FUEL SYSTEM SPECiFiCATIONS ........ · ........ 1-6

FRONT WHEEL/ BRAKE / SUSPENSION /
STEERING SPECIFICATIONS· .. ··.... · ...... ·· .. · .... 1-8
REAR WHEEl/BRAKE/
SUSPENSION SPECIFICATIONS ...... ·.... ·.. · .... 1-8
IGNITION SYSTEM SPECIFICATIONS ·........ ·1-9

CYLINDER HEAD/
VALVES SPECIFICATIONS .......................... · 1-6

TORQUE VALUES ...... · ........ ·............ ............ 1-10

CYLINDER / PISTON SPECiFiCATIONS ........ · 1-7

LUBRICATION & SEAL POINTS ·.. ·.. ·.... ·.. · .. ·1-13

CLUTCH / GEARSHIFT
LINKAGE SPECIFICATIONS ·.......... ·.... ·.. ·...... 1-7

CABLE & HARNESS ROUTING ·.. ·...... ·.. · .. · .. 1-14
EMISSION CONTROL SYSTEMS ........ · ...... ·1-17

ALTERNATOR/ CAM CHAIN TENSIONER
SPECiFiCATIONS .......... ·· ·.. ·· .... ··.... · ...... · .. · .. ··· 1-7

1-1

GENERAL INFORMATION

SERVICE RULES
1. Use genuine Honda or Honda-recommended parts and lubricants or their equivalents. Parts that don 't meet Honda's
design specifications may cause damage to the motorcycle.
2. Use the special tools designed for this product to avoid damage and incorrect assembly.
3. Use only metric tools when servicing the motorcycle. Metric bolts, nuts and screws are nol interchangeable with
English fasteners.
4. Install new gaskets, O-rings. cotter pins, and lock plates when reassembling.
5. When tightening bolts or nuts, begin with the larger diameter or inner bolt first. Then tighten to the specified torque
diagonally in incremental steps unless a particular sequence is specified.
6. Clean parts in cleaning solvent upon disassembly. Lubricate any sliding surfaces before reassembly.
7. After reassembly, check all parts for proper installation and operation.
8. Route all electrical wires as shown on page 1-14, Cable and Harness Routing.

MODEL IDENTIFICATION

1-2

,
GENERAL INFORMATION
The Vehicle Identification Number (VIN) is stamped on the left side of

the steering head.

The engine serial number is stamped on the lower left side of the
crankcase.

The model identification label (U.S.A.) or the safety Certification label
(Canada) is located on right side of the steering head.

The carburetor identification number is stamped on the right side of
the carburetor body as shown .

1-3

GENERAL INFORMATION
'04 - '07: The Vehicle Emission Conlrol Information label is attached
on the reverse side of the left side cover.

After '07: The Vehicle Emission Control Information label is attach ad , - - - - - - - - - - , - - - - - - -- to the leh fronl fork (U.S.A.) or both front forks (Canada).
AFTER '07:
EM ISSION CONTROL
INFORMATION LABEL (Canada)

EM ISSION CONTROL INFORMATION
LABElIU.5A and Canada)
The color label is allached on the left side of the main frame. When P - - -......,.......,
ordering color.-coded parts, always specify the deslgnaled color code.

1-4

GENERAL INFORMATION

GENERAL SPECIFICATIONS
mm
58 1 mm (22.9 in)
774 mm (30.5 in)
911 mm (35.9 in)
548 mm (21.6 in)
209 mm (8.2 in)
146 mm (5.8 in)
50 kg (110 Ibs)

I I

Overall width
Overall height

Wheelbase
Seat height
Foolpeg height
Ground clearance

Curb weight
Front suspension
Front wheel travel
Rear suspension
Rear wheel travel
Rear damper
Front tire size
Rear tire size
Tire brand (CHENG SHIN)

Front brake
Rear brake
Casler angle
Trail length

Fuel lank capacity

('04- '07)
(After '07)

Fuel tank reserve capacity

('04 - '07)

Displacement
Compression ratio
Valve train
Intake valve
opens

closes
Exhaust valve

opens

doses

al 1 mm (0.04 in) tift
at 1 mm (0.04 in) lift
at , mm (0 .04 iollift
at 1 mm (0 .04 in) Jift

Cooling system
Air filtration
Crankshaft type

dry weight

system
Clutch operation system
Transmission

Primary reduction

,,,
2nd

3,d
Gearshift panern

49 cm' (3.0 cu·in)
10.0 : 1
Chain driven, OHC with roctet arm
7.5 0 BTDC
12.5° ABDC
22.5° BBDC

2,so BTDC
Forced pressure and wet sump
Trochoid
Air cooled
Oiled polyurethane f oam
Assembled type
, 7.2 kg (37.9 Ibs)
inclined 80°

Lubrication system
Oil pump type

Final reduction
Gear ratio

Telescopic fork
87 mm (3.4 in)
Swingarm
70 mm (2.8 in)
Conventional type oil damper
2.50-1033J
2.50-1033J
Front/Rear: C· 183A
Internal expanding shoe
Internal expanding shoe
25° 00'
32 mm (1.3 in)
3.0 liter (0.79 US gal, 0.66 Imp gal)
2.61i1er (0.69 US gal, 0.57 Imp gal )
0.9 liter (0.24 US gal, 0.20 Imp gal)
.t8US
0.15
I
0.7

Automatic centrifugal
3·speed
4.058 (69117)
2.642137/'4)
3.272136111)
1.667 (25115)
1.190 (25121)
Left foot operated return system, N - 1- 2-

1-5

GENERAL INFORMATION

LUBRICATION SYSTEM SPECIFICATIONS

Canada) or equivalent mOler oil
API service classification: SG or higher
JASOT
. MA

FUEL SYSTEM SPECIFICATIONS
number

PA42A

2rd groove from top

CYLINDER HEADIVALVES SPECIFICATIONS

valve guide

I
I

1-6

II

GENERAL INFORMATION

CYLINDER/PISTON SPECIFICATIONS
___

STANDARD

~

~U:;"t
mm (in )
SERVICE UMIT

Cylinder

I

Piston, pisto n ring

;
g'p

CLUTCH/GEARSHIFT LINKAGE SPECIFICATIONS
~

=:-

t=l~uni

: m~

(in )

Clutch disc Ih)d",,", ,-

I.

Clutch

ALTERNATOR/CAM CHAIN TENSIONER SPECIFICATIONS
h C ~ 'm ~ 'h ~ ' ~ ;" ~ le ~ nsTOer

n. , -'! IT ~EM ~

~:;

Push rod D.D.
_ _,,--,Spring _ f " e ", e ", le ", "g~l

: =I
,- h _-,

i 11.985
~:.' - 12.000STA'fND~?Ri1 (OA71B - 0.4724)
:- = -=+
1 ", 1 .", 3 ~ (4 •. 381

Unit: mm (in)

~ S~ERV11.94 ~ (0.470)
IC ~E L ~1MWIT ~ '
100 (3.9)

1-7

GENERAL INFORMATION

CRANKSHAFT /TRANSMISSION/KICKSTARTER SPECIFICATIONS

I

I

FRONT WHEELIBRAKE/SUSPENSION/STEERING SPECIFICATIONS
i i

I .
I .
I .

I .

REAR WHEEL/BRAKE/SUSPENSION SPECIFICATIONS
ITEM
Minimum tire tread depth
Cold tire pressure
Axle runout
Wheel rim -Io-hub distance
Wheel rim runout

125 kPa (1.25
kgf

/ cm

~.

-

t-

Unit' mm (In)
LIMIT
3.0 (0.12)
~ ERVIC

18 psi)

0.20 (O . O8

~

25 ± 1.0 (to ± 0.04)

f--Orive chain
Brake

"-B

1-8

STANDARD

Radial
Axial
Sizellink
S lack
Brake pedal free play
Brake drum I.D.
~ ake
lIning th ickness

-

2.0 (0.08)

2.0 (0.08)

DID420MBKlfla
15 25(9116 - 1)
10 20 (318 13/16)
80 (3.1)
3.5 (0.14)

r80.5 (3.17)
2.0 (O.OB)

-

GENERAL INFORMATION

IGNITION SYSTEM SPECIFICATIONS

1-9

GENERAL INFORMATION

TORQUE VALUES
STANDARD
TORQUE

FASTENER TYPE
5 mm hex bolt and nut
6 mm hex bolt and nut
8 mm hex boll and nut
10 mm hex bolt and nut
12 mm hex bolt and nut

4.9 (0.5, 3.6)

9.8 (lO, 7)
22 (2.2, 16)
34 (3.5, 25)
54 (5.5, 40)

TORQUE
N'm (kgf·m . Ibf.ft)

FASTENER TYPE

N'm (kgf'm, Ibf.ft)

3.9 (0.4. 2.9)
8.8 (0.9, 6.5)

5 mm screw
6 mm screw
6 mm flange bolt (8 mm head, small head)
6 mm flange bolt (8 mm head, large f lange)
6 mm f lange bolt (10 mm head) and nut
8 mm flange bolt and nut
I 10 mm flange bolt and nut

9.B (lO, 7)
12 (1.2, 9)
12 (1.2, 9)
26 (2 .7, 20)

39 (4.0, 29)

• Torque specifications listed below are for specified fasteners .
• Others should be tightened to standard torque values listed above.
NOTES:

1.
2.
3.
4.

Apply oil to the threa ds.
Apply grease to the seating sutiace.
U-nut
ALOe bolt; replace with a new one.

ENGINE
MAINTENANCE
ITEM

, Spark plug ('04 and '05)
Spark plug (After '05)
Oil drain bolt
Valve adjuster hole cap
Valve adjuster lock nut
Cluten adjuster lock nut

2
2

THREAD
DIA.(mm)
10
10
12
30
5

1

8

O'TY

THREAD
DIA. (mmJ

O'TY

1
1
1

TORQUE
N ·m (kgf·m , Ibf.ft)
12 (1.2, 9)
16 (1.6,12)
25 (2.5, 18)
12 (1.2, 9)
8.8 (0.9, 6.5)
12 (1.2, 9)

REMARKS

NOTE 1

LUBRICATION
ITEM
Oil pump mounting screw
Oil pump cover screw

3
3

6
5

TORQUE
N·m Ikgf·m , IbUt)
7.4 (0.75, 5.5)
4.7 (0.48, 3.5)

I

REMARKS

I

ENGINE REMOVAL/ INSTALLATION
ITEM
Drive sprocket fixing plate bolt

O'TY

THREAD
DIA. lmmJ

2

6

TORQUE
N 'm (kgf'm , lbf.ft)
12 (1.2, 9)

I

REMARKS

CYLINDER HEAD/VALVES
ITEM
Cylinder head cover nut/cap nul
Cylinder head right side cover bolt
Cam sprocket bolt

O'TY

113

2
2

THREAD
DIA. lmmJ
6
6

5

TORQUE
N ·m (kgf·m , Ibf.ft)
11 itt, 8)
9.8 (1.0, 7)
8.8 (0.9, 6.5)

REMARKS

CYLINDER/ PISTON
ITEM
Cam d1ain guide roller pin bolt

1-10

Q'TY

THREAD
DIA. lmm)

1

8

TORQUE
N 'm (kgf'm , Ibf.ft)
9.8 (1.0, 7)

REMARKS

GENERAL INFORMATION
CLUTCH / GEARSHIFT LINKAGE

ITEM

Clutch outor cover screw
Clutch lock nu t
Clutch assembly screw
Shift drum stopper arm bolt

Shih return spring pin bolt
Gearshift cam plat e bolt

OTI

•
•

THREAD
DIA. lmml
5

1

"5

1
1
1

6
8
6

TORQUE
N 'm (kg'-m, Ibf.ft)
4.4 (0.45, 3.3)
42 (4.3, 31)
5.9 (0.6, 4.3)
13 (1.3, 9)

REMARKS

29 (3.0, 22)
17 (1.7, 12)

AL TERNATORICAM CHAIN TENSIONER

ITEM
Flywheel nut
Cam chain tensioner seating bolt
Cam chain lensioner p~vot
bolt

OTI
1
1
1

THREAD

TORaUE

OIA . lmml

N ·m (kgf·m. Ibf·ft)

10

41 (4.2,30)

8

2312.3, 17)
16 (1.6. 12)

,.

REMARKS

CRANKSHAFTITRANSMISSION/ KICKSTARTEA

ITEM
Shift drum bolt

OTI
1

THREAD

TORaUE

CIA. (mm)

N'm Ikgf·m, lbf.ft)
12 (1.2. 9)

6

REMARKS

FRAME
FRAME/BODY PANELS/ EXHAUST SYSTEM

ITEM
Side stand pivot bolt
Muffler mounting bolt
Exhaust pipe protector bolt
Exhaust pipe cover screw

OTI
1
1

THREAD

TORQUE

DlA. (mm)

N'm (kgt·m. Ibf.ft)

page 2-7

10

3

8
6
5

26 (2.7, 20)
15(1.5, 11)
5.9 (0.6, 4.3)

OTI

THREAD
DIA. (mml

2

6

TORQUE
N·m (kgf·m. Ibf.ftj
9.8 (10, 7)

•

REMARKS

MAINTENANCE

ITEM
Fuel valve mounting bolt

REMARKS

NEW

FUEl SYSTEM

ITEM
Connectin boot band screw

OTI
1

THREAD
DIA . (mml

TORQUE
N'm (kgf·m, Ibf·ft)
to (0.1, 0.7)

THREAD

TORQUE
N·m (kgf·m. Ibf.ftl
31 (3.2.23)

•

REMARKS

ENGINE REMOVAl/INSTALLATION

ITEM
En ine han er nut

OTI
2

DlA. (mm)

8

REMARKS

FRONT WHEeUBRAKElSUSPENSION/STEERING

ITEM
Handlebar mounting nut
Engine stop switdl holder screw
Brake lever pivot bolt
Brake lever pivot nut
Spoke nipple
Front axle nut
Front brake arm nut

Fork protector bolt
Steering stem nut
Steering stem top thread

OTI
2
2
1
1
28
1
1

•
1
1

THREAD

TORQUE

DlA. lmml
8

N ·m (kgf'm, IbHt)
20 (2.0, 14 )
2.9 (0.3, 2.21

5
5
5
B.C 23

12
5
6
22
22

2.9 (0.3, 2.2)
2.9 (0.3, 2.21
2.0 (0.2, 1,4)
47 (4.8, 35)
5.9 (0.6, 4.3)
9.8 (lO, 7)
74 (7.5, 54)

-

REMARKS

NOTE 3

NOTE 4

page 12·20

1-11

GENERAL INFORMATION
REAR WHEEUBRAKEt SUSPENSION
ITEM
Spoke nipple
Rear axle nut
Driven sprocket nut
Rear brake arm nut
Swingarm pivot nut
Shock absorber mounting nul
Drive chai n slider nut

I aT(

I

,
,,
,

THREAD

TORQUE

CIA. (mm)

N'm (kgf·m. Ibf.ftl
2.0 (0.2, 1.4)
47 (4.8, 35)

28

Be 2.3

4

'2
8

32 (3.3,
5.9 (0.6,
39 (4.0,
34 (3.5,

5
10

2

'0
6

REMARKS

NOTE 3
NOTE 3
NOTE 4
NOTE 2,3
NOTE 3
NOTE 3

24)
4.3)
29)
25)

12 (1.2. 9)

IGNITION SYSTEM

~

-r.

nito

1-12

' TH ~

ITEM

coil mounting bolt

REA

...D ,-

Q'lY

DIA. lmml

1

5

~-

-.

I

TORauE

N'm (kgf'm. Ibf.,t"l

-,

5.9 (0.6, 4.3) _

~t:

-

-

R : E : M : A : R : K : S -1

GENERAL INFORMATION

LUBRICATION & SEAL POINTS
ENGINE
=~

=, l £ O K C ~ A ~ nKO»N

'-l=

~

Cylinder bore surface
Valve adjuster hole cap threads
Connecting rod big end bearing
Connecting rod small end inner surface
Piston ouler surface, piston pin hole and ring grooves
PislOn pin OUler surface
Piston ring (whole surface)
Valve stem sliding surface
Camshaft lobes
Cam chain
Cam chain guide roller inner surface
Rocker arm inner and slipper surfaces
Cam chain tensioner push rod (inside)
Oil pump rotors
Cl utch center guide (whole su rf ace)
Cl utch discs
Primary drive gear teeth and inner surface
Primary driven gear teeth
Mainshatt sliding surface
Counters haft sliding surface
Transmission gear sliding surface, gear teeth and
shifter groove
Shift drum outer surface
Kickstarter spindle sliding surface
Other rotating and sliding area
Each bearing rotating area
Each oil seal lips
Each O' ring

MATERI

Engine oil

__~

[l -=+~

R~EMA

~ Ks ~

=~-l

pour 1-2cm3

Fill with 1 - 2 cm J (page 10-7)
Fi ll with 0_5 - , cm"

FRAME
~

~

l : O ~ C ~ A ~ JI ~ O~N ~=

-

~=t

Air cleaner housing cover mating groove
Thronle grip pipe flange
Steering head beari ng and race sliding surface
Wheel hub dust seal lips
Wheel bearing cavi ties
Brake panel anchor pin sliding surface
Brake cam spindle and sliding surface
Brake pedal pivot
Fork dust seal lips
Fork slider outer surface (slider guide sliding surface)
Fork slider guide outer groove
Fork spring whole surface
Swingarm pivot nut seating surface

Sl~ · d~;n ~ g= , = u = rt = a = , = e =t

pivotseal
and
Side
Brakestand
cam dust
Thronle cable ouler inside
Brake cable outer inside
Handlebar grip rubber inside
Air cleaner connecting boot-Io-housing mating area

~;

~

M ~ A~ JERIAl

~

Multi -purpose grease

-'~=
~

R~E ~MARK

~ S~

__-=~J

I

Apply5-6g
Apply5-6g
Apply 14 g

~ Engine~ oil

Cable lubricant
Honda bond A or equivalent

1-13

GENERAL INFORMATION

CABLE & HARNESS ROUTING
AFTER '07 ONLY:

CLAMP

'i~:

BRAKE CABLE

LEFT*

7.:

FUEL HOSE

U

'iP.lllJ=L--'::0 - 3mmIO -O. 12 fnl

FUel TANK

>-\...:::;::t----"\-:o.J...

BREATHER HOSE
FUel HOSE

PAINT MARKS

THROTTLE CABLE

FUEL HOSE

WIRE BANOS

BRAKE CABLE
ENGINE STOP SWITCH WIRE

1-14

GENERAL INFORMATION
IGNITION COil

GROUND
CARBURETOR AIR VENT HOSE

'07 ONLY;

10l

FUEL HOSE

0-3 IO -O
., , : /
mm

IGNITION SWITCH

UP
SPARK PLUG WIRE

IGNITION SWITCH WIRE
ENGINE STOP
SWITCH WIRE

' - _"'- ALTERNATOR WIRE
ENGINE STOP SWITCH WIRE

CRANKCASEBAEATHER
STORAGE TANK

THROTTLE CABLE

CLIP
ENGINE STOP

5- 10mm*"A"iI

SWITCH WIRE
IGNITION SWITCH WIRE

Al TEANATOA WIRE
WIRE CLAMP

CRANKCASE BREATHER DRAIN HOSE

CARBURETOR DRAIN HOSE

1-15

GENERAL INFORMATION
IGNITION CDr"RIOL MODULE oeM)

MAIN WIRE HAFINE:;S

1-16

GENERAL INFORMATION

EMISSION CONTROL SYSTEMS
The U.S. Environmental Protection Agency (EPA), and the California Air Resources Board (CAR B) require that off-road
motorcycle comply with applicable exhaust emissions standards during its useful life, when operated and maintained
according to the instruction provided.

SOURCE OF EMISSIONS
The combustion process produces carbon monoxide, oxides of nitrogen , and hydrocarbons. Controlling hydrocarbons and
oxides of nitrogen is very important because, under certain conditions, they react to form photochemical smog when
subjected to sunlight. Carbon monoxide does not react in the same way, but it is toxic.
Honda Motor Co., Ltd. utilizes various systems to reduce carbon monoxide, oxides of nitrogen , and hydrocarbons.

EXHAUST EMISSION CONTROL SYSTEM
The exhaust emission control system is composed of appropriate carburetor setting, no adjustments should be made
except for high altitude setting and idle speed adjustment with the throttle stop screw. The exhaust emission control
system is separate from the crankcase emission control system .

CRANKCASE EMISSION CONTROL SYSTEM
The engine is equipped with a closed crankcase system to prevent discharging crankcase emissions into the atmosphere.
~Iow-by
gas is returned to the combustion chamber through the air cleaner and carburetor.

AIR CLEANER

CARBURETOR --_ _ __

CRANKCASE BREATHER
STORAGE TANK

•
CRANKCASE BREATHER DRAIN HOSE

BLOW-BY GAS

¢::= FRESH AIR

1-17

GENERAL INFORMATION
SERVICING THE HONDA
U.S.A. Only
Maintenance, replacement or repair of the emission control devices and systems may be performed by any motorcycle
repair establishment or indivIdual using parts that Bre ·certified" to EPA standards.

PROHIBITED ACTIONS
The following prohibitions apply to everyone with raspect to the engines emission control system.
You may not remove or disable any device or element of design that may affect an engine's emission levels. This
restriction applies before and after the engine in placed in service.

NOISE EMISSION CONTROL SYSTEM
TAMPERING WITH THE NOISE CONTROL SYSTEM IS PROHIBITED: U,S. Federal law prohibits, or Canadian provincial laws
may prohibit the following acts or the causing thera of: (1) The removal or rendering inoperative by any person, other than
for purposes of maintenance, repair or replacement, of any device or element of design Incorporated into any new vehicle
for the purpose of noise control prior to its sale or delivery to the ultimate purchaser or while it Is in use; 12) the use of the
vehicle after such device or element of design has been removed or rendered inoperative by any person.

AMONG THOSE ACTS PRESUMED TO CONSTITUTE TAMPERING ARE THE FOLLOWING ACTS:
1.
2.
3.
4.

Removal of, or puncturing of the muffler, baffles, header pipes or any other component which conducts exhaust gases.
Removal of, or puncturing of any part of the intake system.
Lack of proper maintenance.
Replacing any moving parts of the vehicle, or parts of the exhaust or Intake system, with parts other then those
specified by the manufacturer.

FUEL PERMEATION EMISSION CONTROL SYSTEM (AFTER '07)
This motorcycle complies with the Fuel Permeation Emission Control regulations of the U.S. Environmental Protection
Agency (EPA), California Air Resources Board (CARB), and Environment Canada (EC). The fuel tank and fuel hoses used on
the motorcycle incorporate fuel permeation controllechnologies. Tampering with the fuel tank or fuel hoses to redu ce or
defeat the effectiveness of the fuel permeation technologies is prohibited by federal regulations.

REBUILT ENGINE
When you rebuild your engine including 8 major overhaul In which you replace the engine's pistons or power assemblies
or make other changes that significantly Increase the service life of the engine, your Honda will continue to comply with all
emissions regulations if you :
-

Make sure you ate technically qualified to rebuild the engine and have the proper tools
Use only Genuine Honda parts or equivalents
Make sure to maintain all specifications as described in this Service Manual

1-18

2. FRAME/BODY PANELS/EXHAUST SYSTEM

SERVICE INFORMATION .. ·•··· .. ···· .... · .. ·.... ·· .. · 2-2

NUMBER PLATE .. · .... · .......... ·· .. ·· .......... ·· .. ·· .. · .. 2-5

TROUBLESHOOTING .................................... 2-2

FRONT FENOER· .. ·· ............ ····· .. ·.. · .. · .... ·· .. ·· .. ·.. 2-5

SEAT ........ ·.... ·.. · .. ··· .. ·· ··.. · ............ · .......... ···· .... · 2-3

EXHAUST SYSTEM .. · .. ·.. · .... ·.......... · ............ · .. 2-5

FUEL TANK ........................................ .... ........ 2-4

SIDE STAND · .... ·· ........ · .... ·· .... · ........ · ...... · .. · .... ·2-6

2-1

FRAME/BODY PANELS/EXHAUST SYSTEM

SERVICE INFORMATION
GENERAL
• Work in a well ventilated are a. Smoking or allowing flames or sparks in the work area or where gasoline is stored can
cause a fi re or explosion.
• This section covers removal and installation of the body panels, fuel tank and exhaust system.
• Always replace the exhaust pipe gasket after removing the exhaust system from the engine.
• When installing the exhaust system, loosely install all of fasteners. Always tig hten the exhaust pipe joint nuts first, then
tighten the mount ing fastener. If you tighten the mou nting fasteners first, the exhaust pipe may not seat properly.
• Always inspect the exhaust system fo r leaks after instal lation.

TORQUE VALUES
Side stand pivot bolt
Muffler mounting bolt
Exhaust pipe protector bolt
Exhaust pipe cover screw

TROUBLESHOOTING
Excessive exhaust noise
• Broken exhaust system
• Exhaust gas leak
Poor performance
• Deformed exhaust syst em
• Exhaust gas leak
• Clogged muffler

2-2

See page 2-7
26 N'm (2.7 kgf·m, 20 Ibf·ft)
15 N'm (1.5 kgf·m , 11 Ibf·ft)
5.9 N'm (0.6 kgf.m, 4.3 ibf.ft)

FRAME/ BODY PANELS/EXHAUST SYSTEM

SEAT
REMOVAL
Remove the two trim clips.
Remove the two screws and bolts.

Pull the seat assembly back and remove it.

INSTALLATION
Install the seal assembly by inserting the prongs
into the retainers on the frame.

Install the bolts and screws and tighten them.
Install the trim clips and lock them by pushing the center pin flush.
CLIPS
SCREWS

SEAT ASSEMBLY

RETAINERS

PRONGS

2-3

FRAME/BODY PANELS/EXHAUST SYSTEM
DISASSEMBLY/ASSEMBLY
SIDE COVERS

TANK SHROUDS

,~

REAR FENDER

SEAT

FUEL TANK
Remove the seat assembly (page 2-3).
Remove the breather hose from the number plate.
Turn the fuel valve OFF and disconnect the fuel
hose from the fuel valve.

BREATHER HOSE

BOlT/'vVASHER

Remove the two bolts, washer and collar.
For fuel stramer 5erVice, see page 34

Remove the fuel tank.

BOlT/COLLAR

Installation is in the reverse order of removal.

FUEL TANK

2-4

.,---tl'1f

FUEL HOSE

FRAME/BODY PANELS/EXHAUST SYSTEM

NUMBER PLATE
Remove the breather hose from the number plate.
Remove the fender mounting bolt.
Remove the number plate from the steering stem
nut and front fender.
Installation is in the reverse order of removal.

NUMBER

FRONT FENDER
Remove the three bolts and the front fender.
Instailation is in the reverse order of remova l.

EXHAUST SYSTEM
REMOVAL
For spark arrester
mamtenance, refer
to page 3·19

Remove the seat assembly (page 2-3).
Remove the exhaust pipe joint nulS.
Remove the mounting bolt and the muffler.
Remove the exhaust pipe joint gasket.

INSTALLATION
Install a new joint gasket inlO the exhaust port.
Set the exhaust pipe onto the engine by aligning the
exhaust pipe flange with the cylinder head studs,
then install the joint nuts and the mounting bolt.
Tighten the joint nuts.
Tighten the mounting bolt.

TORQUE: 26 N'm !2.7 kgf.m, 20 IbHt)
Install t he seat assembly (page 2·3)

2-5

FRAME/BODY PANELS/EXHAUST SYSTEM
MUFFLER

SPARK ARRESTER
MOUNTING BOLT

26 N·m (2.7 kgf-m, 20 Ibf·ft)

EXHAUST PIPE PROTECTOR

GASKET

15 N'm (1,5 kgf·m, 11Ibf.ft)

JOINT NUTS

5.9 N·m (0.6 kgf·m, 4.3 Ibf.ft)

EXHAUST PIPE caVEA

SIDE STAND
REMOVAL
Support the motorcycle secu rely with a hoist or r-T'"[
equivalent.
Retract the side stand and remove the following:
-

-

2-6

Return spring
Pivot nut
Pivot bolt
Side stand

i<ljTeQ

TI-~

fI

FRAME/BODY PANELS/EXHAUST SYSTEM
INSTALLATION
Apply grease to the side stand pivot and sliding sur- . .- ....".,.'"
faces.
Install the side stand with the pivot bolt.
Tighten the pivot bolt

TORQUE : 9.8 N 'm (1.0 kgf-m, 7 Ibf.ft)

loosen the pivot bolt 45 - 90°,
Install the pivot nut and tighten it while holding the
pivot bolt.
Install the return spring.
Check the side stand operation for freedom of
movement.

2-7

3. MAINTENANCE

SERVICE INFORMA nON .............................. 3-2

DRIVE CHAIN ···· ························ ··········· ········· 3-13

MAINTENANCE SCHEDULE ................... ...... 3-4

DRIVE CHAIN SLIDER ·································· 3-15

FUEL LINE ...................................................... 3-6

BRAKE SHOE WEAR ·············· ······················ 3-15

THROTILE OPERATION ································ 3-6

BRAKE SYSTEM ··········································· 3-16

AIR CLEANER················································· 3-7

CLUTCH SYSTEM········································· 3-17

SPARK PLUG ...................... ........................... 3-8

SIDE STAND ······························· ····· ···· ········· 3-17

VALVE CLEARANCE······································ 3-9

SUSPENSION ···············································3-18

ENGINE OIL·················································· 3-10

SPARK ARRESTER ······································· 3-19

ENGINE OIL STRAINER SCREEN ............... 3-12

NUTS, BOLTS, FASTENERS ······ ·················· 3-19

ENGINE OIL CENTRIFUGAL FILTER··········· 3-12

WHEELS / TIRES ································· ··········· 3-20

ENGINE IDLE SPEED ··································· 3-13

STEERING HEAD BEARINGS ··················· ···3-20

3-1

MAINTENANCE

SERVICE INFORMATION
GENERAL
• Place the motorcycle on 8 level surface before st arting any work.
• Gasoline is extremely flammable and Is explosive under certain conditions. Work in a well ventilated ares. Smoking or
allowing flames or sparks In the work area o r w here the 98801108 is sto red can cause a fi re or explosion .
• The exhaust contains poisonous carbon monoxide g8S that may cause loss of consciousness and may lead to death.
Run the engine in an open area o r with an exhaust evacuation system in an enclosed area.

SPECIFICATIONS

Spark plug

Engine oil capacity

equivalent motor oil
APi service classi fication: SG or higher

Recommended engine oit

JASO T 903 standard: MA

SAE

Valve clearance
I

I

Tire size

Tire air pressure

Minimum tire tread depth

TORQUE VALUES
Fuel valve mounting bolt
Spark plug ('04 and 'OS)
Spark plug (After ' OS)
Val .... e adjuster hole cap
Valve adjuster lock nut
Oil drain boh
Clutc::n adjuster lock nut
Rear axle nut
Spoke nipple

3-2

"

9.8 N·m ( 10 kgf·m, 7Ibf·ft )
12 N·m (1.2 kgf·m, 9 Ibf.ft )
16 N·m (1.6 kgf·m , 12Ibf·ft)
12 N·m (1 .2 kgf·m. 9Ibf.ft)
8.8 N'm (0.9 kgf·m, 6.5 Ibf·ft)
25 N·m (2.5 kgf·m, 18 Ibf·ft )
12 N'm (1.2 kgf·m , 9Ibf.ft)
47 N·m 14.8 kgf·m , 35 Ibf·ft)
2.0 N·m (0.2 kgf·m, 1.4Ibf·ft)

Apply engine oil to the threads

U·nut

MAINTENANCE
TOOLS
Spoke wrench, 4.1 x 4.5 mm
0770'-0020100

Valve adjusting wrench, 8 x 9 mm
07708-0030100

o r equivalent commercially avail-

or equivalent commercially available in U.S.A.

able in U.S.A.

Valve adjuster B

07708-0030400

'"

or 07908-KE90200 {U .S.A. only)

3-3

MAINTENANCE

MAINTENANCE SCHEDULE
'04 AND '05
Perform the Pre-ride inspection in the Owner's Manual at each scheduled maintenance period.
I: Inspect and Clean, Adjust, Lubricate or Replace if necessary. C: Clean. R: Replace. A: Adjust. L: Lubricate.

,

COMES

FIRST

.[l.
~

ITEMS

~
~

O f-

mi

km

NOTE

'Ut'rLE

,

c:>

~

,

MAINTENANCE

----*
1

REGULAR MAINTENANCE
INTERVAL

'. '~
c

NOrE

,

1 4~

,

PAGE

,
,

C

C

', -- '

REFER TO

3-.
3-7

3-9

.-----

CTER

DRIVE CHAIN

en

~

~CHAJN:

g

IBRAKE

::!

~ ~

.

~

"

w

~

-l ~ =

~1f!,;

• •.S~

'. L

, m'e""" ,m,

'. L, ev~;!"

,
,,

"

:,

3-13
3-15

,

=

'--I

~ z -,I_

NOTE 1

3·19

rs.

, ,

, -I- '

3-20

Should be serviced by an authorized Honda dealer, unless the owner has proper tools and service data and is
mechanically qualified.
.. In the interest of safety, we recommended these it ems be serviced only by an authorized Honda deater.

NOTES:
,. Service more frequen t ly when ridden in wet or dusty conditions.

3-4

MAINTENANCE
AFTER ' 05
Perform the Pre-ride inspection in the Owner 's Manual al each scheduled maintenance period.
I: Inspect and Clean, Adjust. Lubricate or Replace if necessary. C: Clean. R: Replace. A: Adjust. L: lubricate.
WHICHEVER

FREQUENCY

FIRST

.[}.
ITEMS
--,-_ _ _
FUEL LINE

~ TiCHRon:;~LEOPFlA(fIjN
_
1- ..A:;IR SPARK~lUG

I-

*

i: ,CLi_~AgNER

~=

_

__ _ _

~rl_'

---==11::

' -

N"' O "' TE

r

_

INITIAL

......J\. MAINTE-

COMES

NANCE

l.-..y'

,

m;

r ~T

H

j

100
150
1

NOTE 1

VALVE CLEARANCE
ENGINE OIL

.... ENGINE OIL STRAINER SCREEN
•• ENGINE OIL CENTAIFUG AL FILTER

••

IDLE SPEED
r-- f-NGINE
DRIVE CHAIN

,

SUDER
r-- ~IVE BRAKECHAIN
SHOE WEAR
r-- BRAKE SYSTEM

•

CLUTCH SYSTEM
SIDE STAND
SUSPENSION

II

SPARK ARRESTER

TEI

I
I, L

~-+'
~

I

~

--+t

+

:

c

REFER TO

600 1,200 1,800 2,400
1,000 2,000 3,000 , 4,000
6_
24
18
_ '12
I
I
I
c
c
c I C
I
I
I
I
I
I
I I I I
R
R
R
R
C
C
- C
C
1

r--r L:

or 3 months

1------:--1

I

I
I
I
I

;
(

T

3-6

JIJ
3-7
3-8
3-9
3-10

3 - 12 ~
3-1~

---1

3-13

I

I
I
I I
I
I
I
I
: Every 1,000 mi !1,600 km) or every
100 operating hours
,
I
I
I
I
I
I
I
I
I I
I

PAGE

3-13

I
I
I
1
Every 300 mi (SOD km )

I
I

I
I

• NUTS, BOLTS, FASTENERS
••
•• STEER ING HEAD BEARINGS

WHEtSfT~IR:.

~

'1=

I
R

REGULAR MAINTENANCE
INTERVAL

3-15

31-53-16
3-17
3-17
3· 18
3·19
3·19

3 -~

3·20

Should be serviced by an authorized Honda dealer, unless the owner has proper tools and service data and is
mechanically qualified.
*"" In the interest of safety, we recommended these items be serviced only by an authorized Honda dealer.
*

NOTES:
2. Service more frequently when ridden in wet or dusty conditions.

3-5

MAINTENANCE

FUEL LINE
Check the fuel line for deterioration, damage or

leakage.
Replace the fuel line If necessary.

FUEL STRAINER SCREEN
Turn the fuel valve OFF and disconnect the fuel

hose.
Place a drain pan under the fuel hose and turn the
fuel valve ON to drain the fuel tank.

After the tank has drained completely, remove the
two bolts and collars, and remove the fuel valve and

~1I

: ~

~I1=

=

=I1~

strainer screen.
Wash the fuel strainer screen in non-flammable or
high flash solven!.
Check the D-ring is In good condition, reinstall the
fu el valve.
TIghten the fuel valve mounting bolts to the specified torque.

STRAINER
SCREEN

- : m ' TORQUE: 9.8 N'm (10 kgf·m, 7lbf.ftj
After Installation, check for fuellsaks.

1~

BOLTS/COLLARS

THROTTLE OPERATION
Check for smooth throttle grip full opening and
automatic full closing in all steering positions.
Check the throttle cable and replace it if it is deteriorated, kfnked or damaged.
Lubricate the throttle cable, If throttle operation is
not smooth.
Measure the free play al the throttle grip flange.
FREE PLAY: 2.0 - 4.0 mm ' 1' 16 - 3'16 inl

3-6

mmI1l1S-311Sin)

MAINTENANCE
Throttle grip free play can be adjusted at the upper
end of the throttle cable.
Remove the dust cover from the adjuster,
Adjust the free play by loosening the lock nUl and
turning the adjuster.
Tighten the lock nut and install the dust cover properly.
Recheck the throttle operation.

DUSTCQVER

AIR CLEANER
Remove the two screws and the air cleaner housing

cover.

SCREWS

COVER

Remove the air cleaner element holder and element ;:==================:::;
from the housing.

Wash the element in non-flammable or
point solvent, and let it dry thoroughly.

ELEMENT

high flash

HOLDER

~='-:

Squeeze out
solvent thoroughly

Soak the element in Pro Honda Foam Filter Oil o r
equivalent, and squeeze out any excess oil.

Wash in

solvent

: s q : u : e : e : , : e =~
out
excess Oil

PRO HONDA

FOAM
FILTER OIL

3-7

MAINTENANCE
Reinstall the air cleaner element and the element
holder by aligning the cutout with the projection on
the housing .

GROOVE

PROJECTION

Apply grease into the mating groove in the air
cleaner housing cover.
AI,gn rhegro<Ne In
the cover with the
proJe<:tlOfl on the

Install the housing cover and lighten the screws.

housmg

ELEMENT

SPARK PLUG
REMOVAL
Clean "round the
spark. plug base
WIth comfjTessed
alf before removmg, and be sure

that no debns 15
8/1owed to enter the
combus/1OfI chambe,

Disconnect the spark plug cap.
Remove the spark plug using a spark plug wrench
or an equivalent.
Inspect or replace as described in the maintenance
schedule (page 3·4) .

INSPECTION
Check the following and replace if necessary (rec- , - - - - - - - - - - - - -- -- - - - ,
ommended spark plug: page 3-2):
CENTER ELECTRODE
• Insulator for damage
• Electrodes for wear
• Burning condition, coloration;
- Dark to light brown indicates good condition.
- Excessive lightness indicat es malfunctioning
ignition system or lean mixture.
- Wet or black sooty deposit indicates over-rich
mixture.

Clean the spark plug electrodes with a wire brush or
special plug cleaner.
Check the gap between the center and side electrodes with a wire-type feeler gauge.
If necessary, adjust the gap by bending the side
electrode carefully.
SPARK PLUG GAP: 0.60 - 0.70 mm (0 .024 - 0.028 in)

3-8

~

I=

~'NSULATOR

~=

0.60 - 0.70 mm
(0.024 - 0.028 in)

~S'DE

~

MAINTENANCE
To prevent damage Install the spark plug inthe cylinder head and hand
to the cylmder tigh ten. then torque it wing a spark plug wrench .
head. handtighten
the spark. plug TORQUE:
befOf8 usmg B '04 and 'OS: 12 N ·m (1.2 kgf·m . 9 IbUt)
wrench to tighten After 'OS:
16 N 'm (1.6 kgf·m . 12 IbHt )
to /he sf}8CIfl8d
torque. Install the spark plug cap to the spark plug.

VALVE CLEARANCE
INSPECTION
InspeCf and adluSt
the valve clearance
while the engine IS
cold (below 95"F/
35"CI

Remove the valve adjust er hole Cllps.

Remove the left crankcase cover (page 10-4 ).
Turn the crankshaft counterclockwise and align the
"T" mark on the flywheel with the index notch on
the left crankcase.
Make sure the piston at TOe (Top Dead Center) on
the compression stroke.
This position can be obtained by confirming that
there is slack in the rocker arm.
If there is no slack. rotate the crankshaft one lu l l turn
counterclockwise and match up the "r' mark again .

Check the clearance by inserting a feel er gauge
between the valve adjusting screw and valve stem.

VALVE CLEARANCE;
IN/ EX: 0.05 ± 0.02 mm (0.002 ± 0.001 in )

3-9

MAINTENANCE
ADJUSTMENT
Adjust by loosanin9 the lock nut and turning the r l
adjusting screw un:iI there is a slight drag on a
feeler gauge.

TOOLS:
Valve adjusting wrench,
8x9mm

"'

i{.

~ru-Si'E;]

07708·0030100
(Equivalent com-

merciallyavailValve adjuster B

able in U.S.A.)
07708-0030400 or
07908-KE90200
(U.S.A. only)

TORQUE: 8.8 N'm (0.9 kgf·m , 6.5 Ibf.ft)

Recheck the valve clearance.
Check that valve adjuster hole cap O-ring is in good
condition, replace if necessary.
Coal the D-rings with clean engine oil and install
them in the valve adjuster hole caps.

Apply clean engine oil to the threads, install and
tighten the valve adjuster hole caps to the specified
torque.

TORQUE: 12 N'm 11.2 kgf-m , Slbf.ft)
Install the left crankcase cover (page 10-8)

ENGINE OIL
OIL LEVEL INSPECTION
Support the motorcycle in an upright position on
level ground.
Start the engine and let it idle fo r 3 - 5 minutes.
Stop the engine and wait 2 - 3minutes.
Hold the motorcycle in an upright pOSition.
Remove the oil filler cap/dipstick and wipe it clean.
Check the oil level by inserting the oil filler cap/dipstick into the 011 filler hole without screwing it in.

The engine contains a sufficient amount of oil if the
oil level is between the upper and lower level marks
on the dipstick.
If the level is near or below the lower level mark,
add the recommended oil up t o the upper level
mark.

RECOMMENDED ENGINE OU.:
Pro Honda GN44-strokeoil IU .S.A. and Canada) or
equivalent motor all
API service classification : SG or higher
JASO T 903 standam: MA
Viscosity: SAE 10W-30

3-10

UPPER LEVEL

LOWER LEVEL

MAINTENANCE
• Other viscosities shown in the chart may be used
when the average temperature i n your riding
Brea is within the indicated range.
Reinstall the filter cap/dipstick .

-20

o

20

40

80

,

,00

I

t2Q' F

ENGINE OIL CHANGE
Change rhe englnB

oil Wlfh the engine
warm and the
motorcycle on /evt1/

Warm up the engine.

Stop the engine and rem ove the oil filler cap/dipstick.

ground to assure
complete drBlfJIfIQ.

Remove the drain bolt and sealing washer.
Drain the all completely.

Check that the sealing washer on the drain bolt is in
good condition, replace if necessary.
Install and tighten the drain bolt.
TORQUE: 25 N 'm (2.5 kgf·m , 18 Ibf·ft)

3-11

MAINTENANCE
Fill the crankcase with the recommended engine oil.

Oil CAPACITY:
0.6 litter (0.6 US qt, 0.5 Imp qt) at draining
O.Blitter (0.8 US qt. 0.7 Imp qt) at disassembly
Install the oil filler cap/dipstick.
Start the engine and let it idle for 3 - 5 minutes.
Stop the engine and wait 2 - 3minutes.
Hold the moto rcycle in an uprigh t position .
Remove the oil filler cap/dipstick and w ipe it clean .
Check the oil level by inserti ng the oil filler cap/dipstick into the oil filler hole without screwing it in.
Make sure there are no oi l leaks.

ENGINE OIL STRAINER SCREEN
CLEANING
Remove the right crankcase cover (page 9-5) ,
Remove the o i l strainer screen and clean it.
Check the screen for damage and the sealing rubber
for damage or deterioration.
Reinstall the oil strainer screen and right crankcase
cover (page 9-19).

ENGINE OIL CENTRIFUGAL FILTER
CLEANING
Remove t he right crankcase cover, ball retainer and
clutch lifter lever (page 9-5).
Remove the four screws and clutch outer cover.

Do not allow dust
and dirt to enter the
crankshaft oil passage. Do not use
compressed air

3-12

Clean the clutch outer cover and inside of the clutch
outer using a clean lint-free cloth .

MAINTENANCE
Reinstall the clutch outer cover with a new gasket
(page 9-14).

ENGINE IDLE SPEED
• Inspect and adjust the idle speed after all other
engi ne ma intenance items have been performed
and are within specifications .
• The engine must be warm for accurate idle
speed inspection and adjustment.
Warm up the engine for about ten minutes.
Connect a tachometer.
Turn the throttle stop screw as required to obtain
the specified idle speed.
IDLE SPEED: 1,700 ± 100 rpm

DRIVE CHAIN
DRIVE CHAIN SLACK INSPECTION
Turn off the engine, place the motorcycle on its side
stand and shift the transmission into neutral.
Check the slack in the drive chain lower run midway
between the sprockets.
CHAIN SLACK: 15 -25 mm (9/ 16 - 1in)

NOTICE
Excessive chain slack, 40 mm (1-112 in) or more,
may damage the frame.

'!~

"'-

"'1~

ADJUSTMENT
Loosen the rear a)(le nut.
Loosen the adjuster lock nuts and turn both adjusting nuts an equal number of turn until the correct
drive chain slack is obtained.

3-13

MAINTENANCE
Make sure the i ndex marks on both adjusters are
aligned with the index lines on the swingarm.
Tighten the rear axle nUllO the specified torque.
TORQUE: 47 N'm (4.8 kgf·m, 35Ibf·ft)

Tighten both lock nuts.
Recheck the drive chain slack and free wheel rotation.
Check the rear brake pedal free play (page 3-16),
adjust if necessary.
Lubricate the drive chain with # 80 - 90 gear oil.
Wipe off the excess oil.

CLEANING INSPECTION AND
LUBRICATION
If the drive chain becomes extremely dirty, it should
be removed and cleaned prior to lubrication.
Remove the left crankcase cover (page 10-4).
Carefully remove the retaini ng clip with pliers.
Remove the link plat e, master link and drive chain.

Clean the chain with non-flammable or high flash '~
point solvent and wipe it dry.
Be sure the chain has dried completely before lubri-

canting.

Lubricate the drive chain with # 80 - 90 gear oil.
W ipe off the excess gear oil.

~ N O~N;-FLAMBERH'G

-'

FLASH POINT SOLVENT
~
CLEAN

0

~

WIPE AND DRY

LUBRICATE

_

4~

~

~E

Inspect the drive chain fo r possible damage or wear.
Replace any chain that has damaged rollers, loose
filting links, or otherwise appears unserviceable.

41 PINS (40 LINKS)

Measu re the d rive chain length between a span of
41 pins (4D links) from pin center to pin center with
the chain held taut and any kinked joint straightened.
SERVICE LIMIT: 51' mm (20.1 in)

:r,

oRo
o~R

oRo oRo oRo

¢

3-14

or

MAINTENANCE
Installing a new chai n on badly worn sprockets w i ll
cause the new chain to wear quickly.
Inspect the drive and driven sprocket teeth for wear
or damage. Replace if necessary.
Never use a new d rive chain on worn sprockets.
Both chain and sprockets must be in good condition, or the new replacement parts will wear rapidly.

NORMAL

Check the attaching bolts and nuts on the drive and
driven sprockets.
If any are loose, torque them.

Install t he drive chain onto the sprockets.
Install t he master link and link plate.
Install t he retaining clip so that its open end is opposite the normal rotation of the chain .

MASTER LINK

CLIP

DRIVE CHAIN SLIDER
Check the drive chain slider for wea r or damage.
Replace the drive cha i n slider if the wear limi t guide
lug is worn out or it has been damaged.

GUIDE lUG

BRAKE SHOE WEAR
Check t he brake shoes and brake drum if the arrow
on the indicator plat e aligns with the 6. " mark on
the brake panel when the brake lever is appl ied.
H

Refer to page 12-13 or page 13- 10 for brake shoe
and brake drum inspection.

3-15

MAINTENANCE

BRAKE SYSTEM
FRONT BRAKE
Measure the front brake lever free play at the tip of
the lever.

10 - 20 mm (3/8 - 13/16 in)

FREE PLAY: 10 - 20 mm (3/8 - 13/16 in )

Mak.e sure the cutour on the adjusting
nUlls seared on the

Adjust the brake lever free play by turning the
adjusting nut.

JOINT PIN

lomt pm

.~

REAR BRAKE
Check the brake pedal free play.
FREE PLAY: 10 - 20 mm (3/8 - 13/ 16 in)

\
3-16

10-20mm(3/

8 - 13/16 in)

MAINTENANCE
Make sure rhe cur- Adjust the brake pedal free play by turning the
out on theadjustmg adjusting nut.
nut IS !)6artKi on the
}Omt p in.

CLUTCH SYSTEM
If the clutch does not operate properly, adjust the r ~
following:
loosen the clutch adjuster lock nut and turn the
adjusting bolt one full turn clockwise.

;u

.STI

' N!io.:l~

Slowly turn the adjusting bolt counterclockwise
unlil resistance is felt.
Turn the adjusting bolt 118 turn clockwise from this
position, and tighten the lock nut while holding the

adjusting bolt.
TORQUE! 12 N ·m (1.2 kgf .m, 9 Ibf·ft )
Check that the clu tch is not slipping and is properly
disengaging by operating gearshift pedal.

SIDE STAND
Support the motorcycle on a level surface.
Check the side stand spring for damage or loss of
tension .
Check the side st and assembly for freedom of
movement and lubricate the side stand pivot if necessary.

_

_

_ SPRI N G

SIDE Sr..ND

3-17

MAINTENANCE

SUSPENSION
FRONT SUSPENSION INSPECTION
Check the action of the fork legs by operating the
front brake and compressing the front suspension

several limes.
Check the entire assembly for signs of leaks, damage or loose fasteners.
Replace damaged components which cannot be

repaired .
Tighten all nuts and bolts.

Refer to page 12·15 for fork service.

REAR SUSPENSION INSPECTION
Support the motorcycle on safety stand or box and
raise the rear wheel off the ground.
Hold the swingarm and move the rear wheel side
ways with force to see if the wheel bearings are
worn.

Check for worn or loose suspension pivot components by grabbing the swingarm and attempting to
move the swing arm back-and-forth.
Check each fastener of the swingarm and shock
absorber, if any are looseness is noted.
Also, check the pivot bushings fo r wear or damage.

Check the action of the shock absorber by compressing it several times.
Check the entire shock absorber assembly for signs
of leaks, damage or 10058 fasteners.
Replace damaged components which cannot be
repaired.
Tighten all nuts and bolts.
Refer to page 13-12 for shock absorber and to page
13· 14 swingarm service.

3-18

MAINTENANCE

SPARK ARRESTER
Remove the three bolts, spark arrester and gasket
from the muffler.

Use a soft brush to remove carbon deposits from
the screen mesh, being careful not to damage it.
The spark arrester must be free of breaks and holes.
Replace if necessary.

Install the spark arrester with a new gasket into the
muffler.
Tighten the three bolts securely.
r~

SCREEN MESH

~

~-

G '- - A S C

K C E C T :-

!: - ~ C-'

IIiijjjIII

ARRESTER

NUTS, BOLTS, FASTENERS
Check that all chassis nuts and bolts are tightened to
their correct torque values (page 1-10).
Check that all safety clips, clamps and cable stays
afe in place and properly secured.

3-19

MAINTENANCE

WHEELS/TIRES
Tire pressure should be checked when the tires are

COLO.
RECOMMENDED TIRE PRESSURE AND TIRE SIZE:

R-aNT
IR

- r-P~£S"

Pa {kgf/cm2,psij

100 (l .OQ, 15)

125 (1 .25, 18)

RrsTZE
-1
2:"Sb:-fo 33
RnOiNon- - - +--"''-'--''-'''-'--+ = '--''-'''-'--CHENG SHIN)

C-183A

C· l83A

Check the tires for cuts, embedded nails, or other

damage.
Check the f ront and rear wheels for trueness (refer
to page 12-3 and page 13-3)
Measure the tread depth al the center of the tires.
Replace the tires when the tread depth reaches the
following limits.

MINIMUM TREAD DEPTH :
FRONT/ REAR: 3.0 mm (0,12 in)
Tighten any loose spokes to the specified torque.

TOOL:
Spoke wrench, 4 .1)( 4.5 mm

07701 - 0020100

(Equivalent com·
merciallyavailable in U.S.A.)
TORQUE: 2.0 N·m (0.2 kgf·m , 1.4Ibf.ft)

STEERING HEAD BEARINGS
Check that the controf cables do not
interfere WI th handlebar rotation.

Support the motorcycle securely and raise the front - - -... 'r-........
w heel off the ground.
Check that the handlebar moves freely from side to
side.
If the handlebar moves unevenly, binds, or has ver·
tical movement, inspect the steering head bearings
(page 12·18).

3-20

4. LUBRICATION SYSTEM

..
LUBRICATION SYSTEM DIAGRAM ............. 4-2

TROUBLESHOOTING ····································· 4-3

SERVICE INFORMATION .............................. 4-3

OIL PUMp······························ ··· ··· ····· ··············· 4-4

4-1

LUBRICATION SYSTEM

LUBRICATION SYSTEM DIAGRAM

ROCKER ARM

,,
PISTON

II
I
II

OIL

,

AOTOR

OIL STRAINER

4-2

LUBRICATION SYSTEM

SERVICE INFORMATION
GENERAL

ACAUTION
Used engine oil may cause skin cancer if repeatedl y lett in con tact with the skin for prolonged periods. Although this is
unlikely unless you handle used oil on a daily basis, it Is still advisable to thoroughly wash your hands with soap and
water as soon as possible after handling used oit.
•
•
•
•
•

The oil pump service requires engine removal.
The service procedures in this section must be performed with the engine oil drained.
When (emalling and installing the oil pump. use care not to allow dust or dirt to enter the engine.
If any portion of the oil pump is worn beyond the specified service limits, replace the oil pump as an assembly.
After the oil pump has been installed, check that there are no oil leaks and thai oil pressure is correct.

SPECIFICATIONS
Unit: mm

c~;:o.r

A

equivalent motor ·1
classification: SG or higher
T 903 Standard: MA

TORQUE VALUES
Oil pump mounting screw
Oil pump cover screw

7.4 N·m (0.75 kgf·m, 5.5IbHt)
4.7 N·m (0.48 kgf·m , 3.5 Ibf.ft)

TROUBLESHOOTING
Engine oil level too low, high oil consumption
• Normal oil consumption
• External oil leak
• Worn piston ring or Incorrect piston ring installation
• Worn cylinder
• Worn valve guide or stem seal
• Oil pump worn or damaged
all contam ination
• Oit not changed often enough
• Worn piston ring or incorrect piston ring installation
• Worn valve guide or stem seal
• Clogged oil strainer screen

4-3

LUBRICATION SYSTEM

OIL PUMP
REMOVAL
Remove the clutch assembly (page 9-6),
When the oil pu mp is rea dy to be disassembled,
loosen the pump cover screws.
Remove the three screws and oil pump assembly.
Remove the rotor shaft collar from the crankcase.

OISASSEMBLY
Remove the three screws and oi l pump cover.

SCREWS

Remove the oil pump shaft, then remove the inner
and outer rotors from the oil pump body.

INSPECTION
If any ponlOfl of the
011 pump IS worn

beyond the s~
fled service limit
replace the oil
pump as an 8ssem-

bly

Temporarily install the outer and inner rotors into
the oil pump body.
Install the oil pump shaft.
Measure the tip clearance between the inner and
outer rotors.
SERV ICE LIMIT: 0.20 m rn (0.008 in)

Measure the pump body clearance between the
outer rotor and pump body.
SERV ICE LI M IT: 0.12 mm (0.005 in )

4-4

•

LUBRICATION SYSTEM
Measure the side clearance using a straight edge
and fee ler gauge.
SERVICE LIMIT: 0.20 mm (0.008 in )

ASSEMBLY

OIL PUMP BODY

OIL PUMP SHAFT

INNER ROTOR

OIL PUMP COVER

Install the inner and outer rotors into the oil pump
body.
Install the oil pump shaft aligning the flat surfaces
of the shaft and inner rotor.
Fill the oil pump with 0.5-1 cm 3 of engine oil.

4-5

LUBRICATION SYSTEM
Install the oil pump cover and tighten the screws to
the specifi ed torque.

TORQUE: 4.7 N'm (0.48 kgf.m, 3.5 Ibf·ft)

INSTALLATION
Install the rotor shaft collar into the crankcase.
Install a new gasket onto the oil pump body.
Install the oil pump into the crankcase while aligning the pump shaft groove with the cam chain guide
spindle lug.

Install and tighten the three screws to the specified

torque.
TORQUE: 1.4 N'm (0.75 kgf·m . 5.5 Ibf·ft)
Install the clutch assembly (page 9-14).

4-6

COVER

5. FUEL SYSTEM

COMPONENT LOCATION .. .. ...... ................... 5-2

CARBURETOR DISASSEMBL Y······················5-7

SERVICE INFORMATION .............................. 5-3

CARBURETOR ASSEMBL Y···························· 5-9

TROUBLESHOOTING ...... .............................. 5-4

CARBURETOR INSTALLATION ···················5-1 1

AIR CLEANER HOUSING .............................. 5-5

AIR SCREW ADJUSTMENT· ········· ···············5-13

CARBURETOR REMOVAL····························· 5-5

CRANKCASE BREATHER ····························· 5-14

5-1

FUEL SYSTEM

COMPONENT LOCATION

1.0 N'm (0.1 kgf·m, 0.7 IbHt)

5-2

FUEL SYSTEM

SERVICE INFORMATION
GENERAL
• Work in 8 well ventilated area. Smoking or allowing flames or sparks in the work area or where gasoline Is stored can
causa a fire or explosion.
• Refer to page 2-4 for fuel tank removal and installal ion.
• When disassembling fuel system parts, note the location of the O-rings. Replace them with new ones on reassembly.
• Before disassembling the carburetor, place the suitable container under the carburetor drain hose. loosen the screw
and drain the carburetor.
• After removing the carburetor, wrap the Intake port of the engine with a shop towel or cover it with piece of tape to prevent any foreign material from dropping into the engine.

SPECIFICATIONS
ITEM
Carburetor identification
number

$ PECIACAnON$

'04 and '05 U.S.A..
'04 - '07 Canada:
'06 and '07 U.S.A:
After '07:

Main jet
Slow 'at
Jet neadle clip position ('04 and '05 U.S.A.,
'04 - '07 Canada)
Air screw initial opening
Float level
Idle speed
Thronla grip free I.

PA42A
PA42B
PA42C

.58
'35 )( '35
2rd groove from top
1-1/2 turns out
12.7 mm 0.50 in)
1,700 ± 100 r m
2.0 - 4.0 mm (1116 3/16 in)

TORQUE VALUES
Connecting boot band screw

1.0 N·m (0.1 kgf'm, 0,7 Ibf·ft)

TOOL
Carburetor floallevel gauge
07401-0010000

Pilot screw wrench (0 type)
07KMA-MS60101

Pilol screw wrench guide
07PMA-MZ20110

or 07KMA-MN9A100 (U,S.A. only)

5-3

FUEL SYSTEM

TROUBLESHOOTING
Engine cranks but won't st art
• Too much fuel getting to the engine
- Air cleaner clogged
- Flooded carburetor
• Intake air leak
• Fuel contaminated/deteriorated
• No fue l to carbu retor
- Fuel strainer clogged
- Fuel hose clogged
- Float level misadjusled
- Fuel tank breather hose clogged
Lean mixture
• Fuel jets clogged

• Float valve faully
•
•
•
•
•
•

Float level too low
Fuel line restricted
Carburetor air vent hose clogged
Clogged fuel strainer screen
Intake air leak
Throttle valve faulty

Rich mixture
• Choke lever in CLOSE position
• Float valve faulty
• Float level 100 high
• Air jets clogged
• Air cleaner element contami nated
• Flooded carburetor

Engine stalls, hard to start. idles roughly
•
•
•
•
•
•
•
•
•
•

Fuel line restricted
Ignition malfu nction
Fuel mixture too lean/rich
Fuel contaminated/deteri orated
Intake air leak
Idle speed misadjusted
Float level misadjusted
Fuel tank breather hose clogged
Air screw misadjusted
Slow circuit clogged

Afterburn when engine braking is used
• Lean mixture in slow circuit
Backfiring or misfiring during acceleration
• Ignition syst em malfunction
• Fuel mixture too lean
Poor performance (driveability) and poor fuel economy
• Fuel system clogged
• Ignition system malfunction

5-4

FUEL SYSTEM

AIR CLEANER HOUSING
REMOVALIINSTALLA TION
• Refer to page 3-7 for ai r cleaner element service.
Disconnect the crankcase breather hoses.

loosen the connecting boot band screw.
Remove the bolt and the air cleaner housing assembly .

At installation.

Installation is i n the reverse order of removal.

secure the ground
eyelet with the iJlr
cleaner housing

ALIGN \,:HO~

U :.S~IN;GCOVER

mountmg boll

HOLDER

ELEMENT
AIR CLEANER HOUSING

CARBURETOR REMOVAL
THROTILE VALVE
Remove the seat/shrouds/side cover/rea r fender
assemblv (page 2-3).

Loosen the carburetor lop.

5-5

FUEL SYSTEM
Remove the carburetor top and throttle valve from

the carburetor.

Remove the throttle cable from the throttle valve
while compressing the throttle valve spring.

Remove the jet needle retainer and jet needle.

Check the throttle valve and jet needle for scratches,

wear or damage.

JET NEEDLE

THROTILE VALVE
RETAINER

JET NEEDLE

5-6

FUEL SYSTEM
CARBURETOR BODY
Loosen the drain screw and drain the fuel from the
float chamber into an approved gasoline con tainer.

Disconnect the fuel hose, air vent hose and from the
carburetor body.

Loosen the carburetor connecting boot band screw.
Remove the carburetor mounting bolts, carburetor
and insulator.

CARBURETOR DISASSEMBLY
Remove the drain hose.
Remove the screws and float chamber.

Remove the screw.
Remove the float pin, float and float valve.
Inspect the ftoat for deformation or damage .

FLOAT CHAMBER

DRAIN HOSE

\

FLOAT

FLOAT VALVE

5-7

FUEL SYSTEM
Inspect the float valve seat for scores. scratches,
clogging and damage.
Check the tip of the float valve where it contects the

valva seat for stepped wear or contamination.
Replace the valve if the lip is worn or contamina ted
Check the operation of the float valve.

Handle el1tets with Remove the following:
care. They can INJ!J- Main jel
i/y be sccxed or
sCfltchlK1

-

NEEDLE JET

NeedleJsl
Thronls stop screw and spring

o.mage to the eir Turn the air screw in and carefully count the num·
SCffNV 56<11 wiN ber of turn s until it seats lightly . Make a nole of this
occur if the lIt to use as a reference when reinstalling the air
SClew is

tighten«/

"OB1IUf the sear.

screw.
Remove the air screw and spring .

Aher 'OS U.S.A.,
Ahfl( '07 canD.' TOOLS:

Pilot screw wrench (0 type)
Pilot screw wrench guide

07KMA·M S60101 o r
07KMA-MN9A 100
(U.S.A. only)
07PMA·MZ20110

Inspect each jet fOf weaf or damage and replace if
necessary.
Clean the jets with cleaning solvent and blow open
with compressed air.

I

I
I

5-8

FU EL SYSTEM

CARBURETOR ASSEMBLY
AIR SCREW (AmA '05 U.S.A.,
AFTER '07 CANADA)

O·RING

AlA SCREW 1'04 AND '05 U.S.A.,
'04 - '07 CANADA)

THAOTIl E STOP SCREW

--rd-'<;>.J
~

~C-

SPRING

JET
flOAT
DRAIN SCREW
_ _ _ D_RING
SEAL RING

RETAINER

JET NEEDLE (AFTER ·05U.';.A .•~
AFTER '07 CANADA)

JET NEEDLE (,04 AND '05 U.S.A.,
'04 - '07 CANADA)

CHAMBER
THROTILE VALVE

Blow open each air and fuel passage in the carburetor body wi th compressed ai r.

~nd/e
~rfJ.

8'

jets Wlfh

They can eas-

Install the following:

Ily bit scored or
scratched.

-

Needle jet

Main Jet

Install the air screw with the spring and return it to
its original position as noted during removal.
After '05 U.S.A.
A fter W Canada:

THROTTLE
STOP SCREW

- Throttle slop screw and spring

NEEDLE JET

TOOLS:

Pilot screw wrench (0 type)

07KMA·MS60101 o r
07KMA·MN9A 100
(U.S.A . o nlv)

Pilot screw wrench guide

07PMA·MZ20110

Perform the air screw adjustment procedure if a
new ai r screw is installed (page 5-13).

\

~

SPRING

MAIN JET

5-9

FUEL SYSTEM
Hang the float valve onto the float arm lip_
Install the float pin through the float, then install the
floatlfloat pin to the groove on the carburetor body.

Install and tighten the screw.
FLOAT

SCREW

FLOAT

FLOAT LEVEL INSPECTION
• Set the float level gauge so that it is perpendicu lar to the float chamber face and in line with the _ _~
main jet.

FLOAT LE VE L GAUGE

With the float valve seated and the fl oat arm just

touching the valve, measure the float level with the
special tool as shown.
TOOL:

Carburetor float level gauge

07401 ·0010000

FLOAT LEVel: 12.7 mm 10.50 in)

The float cannot be adjusted.
If the float level is OUI of specification, Inspect the
float valve and valve seat.

If the float valve and valve seat are normal, replace
the float assembly.
If the floal valve and valve seat are abnormal,
replace them and recheck the float level.
InSlall a new O-ring into Ihe carburetor groove properly.
InSlalilhe float chamber.

FLOAT CHAMBER

:# O-RII'G
Install and lighten the float chamber screws.
Install the drain hose.

5-10

FLOAT CHAMBER

~

DRAIN HOSE

,

FUEL SYSTEM

CARBURETOR INSTALLATION
CARBURETOR BODY
Install the new D-rings into the insulator and carburetor body grooves.

rr

,c;;:;iBliRiOTilR

Install the carburetor body to the air cleaner con - I11III1
nacting boot and the insulator between the man i- ,...-

fold and carburetor, then install the mounting bolts.
Tighten the connecting boot band screw.
TORQUE: 1.0 N ·m (0.1 kgf.m . O.7Ibf.ft )
Tighten the mounting boi l S.

Connect the fuel hose and air vent hose.

THROTILE VALVE
Install the needle clip on the jet needle.
'04 and '05 U.SA,
'04 - '07 Canada.

CLIP
STANDARD POSITION : 2rd groove from top

AhBf '05 USA,
Aher '07 CAn¥18.

After '05 U.S.A. and After '07 Canada models can
not adjust the needle clip position.

i
5-11

FUEL SYSTEM
Install the jet needle into the throttle valve and
secure it with the needle retainer.

THFlOTTL' VALVE

RETAINER

JET NEEDLE
Check the seal ring is in good condition, replace if
necessary.

Install the throttle valve spring onto the throttle
cable.

Connect the throttle cable to the throttle valve while
compressing the throttle valve spring.

Install the throttle valve into the carburetor body,
aligning its cut-out with the throttle stop screw.

5-12

FUEL SYSTEM
Tighten the carburetor top securely.
After Installing the carburetor, check for the follow- ._;;,;;;;;,;
ing:
-

Engine idle speed (page 3· 13)
Throttle grip free play (page 3-6)

AIR SCREW ADJUSTMENT
IDLE DROP PROCEDURE
• The air screw is factory pte-set. Adjustment is
not necessary unless the carbure tor is overhauled or new air screw Is installed.
• The engine must be warm for eccurate adjustment. Ten minutes of stop-and-go riding Is sufficient.
• Use a tachometer with graduations of 50 rpm or
smaller that will accurately indicate 50 rpm
change.
Ahar 'OS USA.
A hlN '07 CanM2

Adjust the air screw using the following lools.
TOOLS:
Pilot screw wrench (0 type)

Pilot

sc:rew wrench guide

07KMA·MS60101 or
07KMA-MN9A100
(U.S.A . only)
07PMA·MZ20110

o.m.ge 10 IIHJ /fir 1. Turn the air screw clockwise until it seats lightly, ( ~1;:r
and then back it out to the specification given.
SCffIW Hal WJI
occur If the aJr
INITIAL OPENING : 1· 1/ 2 tum. out

l~H

\'

~ ~STB

~

screw IS IJf}htened
~msr
the SUI. 2. Warm the engine up to operating temperature.

3. Stop the engine and connect a tachometer
according to the tachometer manufacturer's
instructions.
4. Start the engine and adjust the idle speed with
the throttle stop screw.
IDLE SPEED: 1,700 :1 100 rpm
5. Turn the air screw in or out slowly to obtain the . ._ _
highest engine speed.
~

_

5-13

FUEL SYSTEM

CRANKCASE BREATHER
Remove the crankcase breather hose plug and
empty any deposits if the deposit level can be seen
in the breather hose.

Install the crankcase breather hose plug and secure
it with the clip securely.

CRANKCASE
BREATHER
DAAINHOSE
PLUG

5-14

6. ENGINE REMOVAL/INSTALLATION

COMPONENT LOCATION ·············· .. ·············6-2

ENGINE REMOVAL ········································6-4

SERVICE INFORMATION .............................. 6-3

ENGINE INSTALLATION ································6-6

6-1

ENGINE REMOVAL/INSTALLATION

COMPONENT LOCATION

12 N·m (1.2 kgf·m, 9Ibf.ft)

31 N'm (3.2 kgf·m, 23 Ibf.ft)

26 N·m (2.7 kgf·m, 20 Ibf.ft)

6-2

ENGINE REMOVALIINSTALLATION

SERVICE INFORMATION
GENERAL
• During engine rem oval and installation, support the motorcycle securely using a hoist or equivalent.
• Support the engine using a jack or other adjustable support to ease of engine hanger bolts removal.
• The following components can be serviced with the engine installed in the frame.
- Alternator/cam chain tensioner (page 10-3)
- Clutch (page 9-6)
- Cylinder/piston (page 8-3)
- Cylinder head/valves (page 7-3)
- Gearshift linkage (page 9-16)
- Oil pump (pa ge 4-4)
• The crankshaft, transmission and kickstarter require engine removal for service (page 11 -3).

SPECIFICATIONS
ITEM
~ine

dry weight
Engine oil capacity at disassembly

SPECIFICATIONS
17.2 kg (37.9 Ibs)
0.8 liter (0.8 US qt, 0.7 Imp qtl

-

TORQUE VALUES
Drive sp rocket fixing plate bolt
Engine hanger nut
Muffler mounting boll

12 N·m 0.2 kgf·m, 9Ibf·ft)
31 N·m (3.2 kgf·m, 23Ibf·ft)
26 N·m (2.7 kgf·m, 20 Ibf·ft)

6-3

ENGINE REMOVAL/ INSTALLATION

ENGINE REMOVAL
Drain the engine oit (page 3· " ).
Remove the following:
-

Exhaust system (page 2-5)
Left crankcase cover (page 10-4)

Disconnect the spark plug cap from the spark plug-

Disconnect the ignition pulse generator and alterna-

tor connectors.

Disconnect the crankcase breather hose from the

crankcase.
Remove the following from the clamp:
-

Carburetor drain hose
Crankcase breather hose

loosen the rear axle nut and drive chain adjusters
to loosen the drive chain (page 3-13)
Remove the following:

-

Fixing plate bolts

-

Fixing plate
Drive sprocket

SPROCKET

6-4

ENGINE REMOVAL/INSTALLATION
Remove the following :

Support the motorcycle securely

-

Intake manifold bolts
D-ring

-

Brake pedal return spring

-

Four bolts and footpeg bar

Remove the engine hanger nuts.
Place a floor jack or other adjustable support under
the engine.
During engme
assembly removal.
hold the engine
securely and be
careful nor /0 damage the frame and
engme.

Remove the hanger bolts and the engine from the
frame.

6-5

ENGINE REMOVAL/INSTALLATION

ENGINE INSTALLATION
Install the engine onto the frame in the reverse
order of removal.
• Note the installation of the hanger bolts. All bolts
are installed from left side .
• The jack height must be continually adjust ed to
relieve stress from the hanger bolt s.
Tighten the hanger nuts to the specified torque.

TORQUE: 31 N'm (3.2 kgf·m, 23 Ibf.ftl

Install the four bolts and footpeg bar.

InslaUthe brake pedal return spring.

Replace the intake manifold O-ring with a new one.
Install and tighten the intake manifold bolts.

6-6

ENGINE REMOVAL/INSTALLATION
Install the following.

-

Drive sprocket
Fixing plate
Fixing plate boils

TORQUE: 12 N 'm (1 .2 kgf·m. 9 IbUt)
Adjust the drive chai n slack (page 3-13).

Connect the crankcase breather hose to the crank-

case.

Connect the ignition pu lse g enerator and alt ern ato r

connectors.

Connect the spark plug cap to the spark plug.
Install the following.
-

Exhaust system (page 2-5)
left crankcase cover (page 10-8)

fill the recommended engine oil (page 3-11).

6-7

7. CYLINDER HEAD/VALVES

COMPONENT LOCATION ················· ...... ······ 7-2

CAMSHAFT REMOVAL ············ ······················ 7-6

SERVICE INFORMATION ······························ 7-3

CYLINDER HEAD ·.. ········································· 7-7

TROUBLESHOOTING ···································· 7-5

CAMSHAFT INSTALLATION ······················· 7-18

CYLINDER COMPRESSiON··························· 7-6

7-1

CYLINDER HEADIVALVES

COMPONENT LOCATION

'04 and '05:

12 N'm (1.2 kgf·m, 9Ibf.ft)
After '05:
16 N'm (1.6 kgf·m, 12Ibf.ft)

8.8 N·m (0.9 kgf·m, 6.5 Ibf.ftJ

7-2

CYLINDER HEADIVALVES

SERVICE INFORMATION
GENERAL
• This section covers service of the cylinder head, valves and camshaft.
• The cylinder head, valves and camshaft services can be done with the engine installed in the frame.
• When disassembling, mark and store the disassembled parts to ensure that they are reinstalled in their originalloca-

lions.
• Clean all disassembled parts with cleaning solvent and dry them by blowing them off with compressed air before
inspection.
• Camshaft lubricating oil is fed through oil passages in the cylinder head. Clean the oi l passages before assembling cylinder head.
• Be careful not to damage the mating surfaces when removing the cylinder head cover and cylinder head.
• Refer to page 10-6 for cam chain tensioner service.

SPECIFICATIONS

valve guide

TORQUE VALUES
Cylinder head cover nut/cap nut
Cylinder head right side cover bolt
Cam sprocket bolt

11 N'm (1.1 kgf·m, 8Ibf.ft)
9.8 N'm (1.0 kgf·m, 7 Ibf.ft)
8.8 N·m (0.9 kgf·m, 6.5 Ibf.ftl

7-3

CYLINDER HEADIVALVES
TOOLS
Valve spring compressor
07757·0010000

Valve spring compressor attach-

ment

Valve guide reamer, 5.0 mm
07984-MA60001

07959-KM30101

or 07984-MA6000D (U.S.A only)
Valve seat cutter, 24 mm (45°IN )
07780-0010600

Valve seal cutter, 20.5 mm (45°EX )
07780-001 1000

or equivalent commercially available in U.S.A.

or equivalent commercially available in U.S.A.

Flat cuner, 21.5 mm (32°EX)
07780-0012800

Flat cutter, 24 mm (32°IN)
07780-0012500

Interior cutter, 22 mm (60 o INfEX)
07780-0014202

or equivalent commercially available in U.S.A.

or equivalent commercially available in U.S.A.

or equivalent commercially available in U.S.A.

Valve guide driver, 5.0 mm

07942-MA60000

Cutter holder, 5 mm

07781 ·0010400

or equivalent commercially avail~
able in U.S.A.

7-4

I

CYLINDER HEADIVALVES

TROUBLESHOOTING
• Engine top-end problems usually affect engine performance . These problem can be diagnosed by a compression test or
bV tracing engine noises to the top-end with a sounding rod stethoscope.
• If the performance is poor at low speeds, check for white smoke in the crankcase breather hose. If the hose is smoky
check for a seized piston ring (page 8-5).

Compression too low, hard starting or poor performance at low speed
• Valves:
- Incorrect valve clearance
- Burned or benl valve
- Incorrect valve timing
- Broken valve spring
- Uneven valve seating
• Cylinder head:
- Leaking or damaged head gasket
- Warped or cracked cylinder head
• Worn cylinder, piston or piston rings (page 8· 5)
Compression t oo high. overheating or knocking
• Excessive carbon build-up on pist on crown or on combustion chamber
Excessive smo ke
• Cylinder head:
- Worn valve stem or valve guide
- Damaged stem seal
• Worn cylinder, piston or piston rings (page 8-5)
Excessive noise
• Cylinder head:
- Incorrect valve clearance
- Sticking valve or broken valve spring
- Damaged or worn camshaft
- Loose or worn cam chain
- Worn or damaged cam chain
- Worn or damaged cam chain tensioner (page 10-7)
- Worn cam sprocket teeth
- Worn rocker arm and/or shaft
• Worn cylinder, piston or piston rings (page 8·5)
Rough idle
• Low cylinder compression

7-5

CYLINDER HEADIVALVES

CYLINDER COMPRESSION
Warm up the engine to normal operating tempera-

ture.
Stop the engine and remove the spark plug (page 3-

81.
Install a compression gauge.
Shift the transmission in neutral and open the choke

lever.
Open the throttle all the way and crank the engine
with the kickstarter untit the gauge reading stops
rising.

COMPRESSION PRESSURE:
981 - 1. 177 kPa (10.0 - 12.0 kgf/ cm 2, 142 - 171 psi)

Low compression can be caused by:
-

Blown cylinder head gasket
Improper valve adjustment
Valve leakage
Worn piston ring or cylinder

High compression can be caused by:
-

Carbon deposits in combustion chamber or on
piston head

CAMSHAFT REMOVAL
Drain the engine oil (page 3-11)
Remove the following:
-

Valve adjuster hole caps (page 3-9)
left crankcase cover (page 10-4)
Sealing bolt, tensioner spring and tensioner
push rod to loosen the cam chain tensioner
(page 10-6)

Disconnect the spark plug cap.
Loosen the cylinder head side cover 6 mm bolt.
Tap the head of the 6 mm bolt and release the cylinder head left side cover from the cylinder head.
Remove the 6 mm bolt, sealing washer and cylinder
head left side cover.
Turn the crankshaft counterclockwise, and align the

. o · mark on the cam sprocket with the index notch
on the cylinder head.
Secure the cam

Remove the bolts, cam sprocket and dowel pin.

c/lam wah a plfJCe
of WIre to prevent It
from falling Into the

"""'' ' '
DOWEL PIN

7-6

CYLINDER HEADIV ALVES
loosen the valve adjusting screw fully to make a
valve clearance maximum (page 3·10).
Temporarily install the cam sprocket bolts into the
camshaft and remove the camshaft from the cylin der head while holding the rocker arms.

INSPECTION
Turn the outer races of the each camshaft bearing
wi t h your finger.
The outer race should turn smoothly and quietly.
Also check that the bearing inner race fits tightly on
the camshaft.
Replace the camshaft assembly if the outer race
does not turn smoothly and quietly, or if it fits
loosely on the camshaft.

Using a micrometer, measure each cam lobe height .
SERVICE LIMITS:
IN: 19.66 mm (0.774 in)
EX: 19.65 mm (0.774 in)

CYLINDER HEAD
REMOVAL
Remove the following:
-

Muffler (page 2-5)
Camshaft (page 7~6)

Remove the intake manifold bolts.
Remove the Coring.

7-7

CYLINDER HEADIVALVES
Remove the following:

-

Cap nuts/seali ng washers
Nut/sealing washers
Cylinder head caver

-

Gasket

Remove the cylinder head mounting bolt and cylinder head .

Remove the following :
-

Gasket
Dowel pins
Collar

-

O-ring

DISASSEMBLY
Remove the spark plug (page 3-8).

BOLTS

Remove the bolts and cyli nder head right side

cover.

Temporarily install a B mm bolt to the rocker arm
shaft and remove the rocker arm shafts and rocker
arms.

7-8

B

bolt

ROCKER ARMS

CYLINDER HEADIVALVES
To prevent/ass of Remove the valve spring cotters using the special
19O5lOfl,

do not

compress the valve
sprmgs more than
necessary /0

remove the cotters

tools as shown .
TOOLS:
Valve spring compressor

07757-0010000
Valve spring compressor attachment

07959·KM30101

SPRING COMPRESSOR

Mark all parIs duro
mg disassembly so
thev can be placed
back In thelf ongmal

locations

Remove the fo l lowing:
-

Spring retainer
Valve spring
Valve
Valve spring seat

-

Stem seal

VALVE
STEM SEAL

INSPECTION
CYLINDER HEAD
Remove carbon deposits from the combustion
chamber.
Avoid damaging the
gasket slJrfiICe

COMBUSTION CHAMBER

Check the spark plug hole and valve areas for
cracks.

Check the cylin der head for warpage with a straight
edge and feeter gauge.
SERVICE LIMIT: 0.05 mm (0.002 in)

7-9

CYLINDER HEADIVALVES
ROCKER ARM / SHAFT
If BI/her ,ocker arm

Inspect the rocker arm slipper surfaces for wear or

reqUIres S9fV/Ce or

damage.

replacement
mspecl rhe cam

lobes for sconng,
chipping

Also check that the oil holes are nol clogged.
Measure the rocker arm 1.0.

or flil t SERVICE LIMIT: tN / EX: 10.10 mm (0.398 in)
spats

Inspect the rocker arm shaft for wear or damage.

Measure the O.O.of the rocker arm shaft.
SERVICE LIMIT: IN/ EX: 9.91 mm (0.390 in)

VALVE SPRING

Measure the free length of the valve springs.
SERVICE LIMIT: IN/ EX : 31.8 mm (1.25 in)

Replace the springs if they ere shorter than the service Jimit.

VALVE
Inspect each valve for bending, burning o r abnormal stem wear.
Check valve movement in the guide.
Measure and record each valve stem 0 .0 .
SERVICE LIMIT: IN/ EX: 4.92 mm (0.194 in)

7-10

CYLINDER HEADIVALVES
Ream the guides to remove any carbon deposits
before measuring the guide.
Insert the reamer from the combus tion chamber
side of the head and always rotate the reamer clock- ..............~"'!

wise.

TOOL:
Valve guide reamer, 5.0 mm

!=

07984· MA60001 or
07984-MA6000D
(U .S.A. only)

Measure and record each valve guide 1.0.

SERVICE LIMIT: IN/ EX: 5.03 mm (0.198 in)
Subtract each valve stem 0.0. from the corresponding gu ide 1.0. to obtain the stem-to-guide clearance.

SERVICE LIMITS:
IN: O.OS mm (0.003 in)
EX: 0.10 mm (0.004 in )
Raface lhe wive

sears whenever rhe
valve guides are
replaced (page 7·12)

If the st em-la-guide clearance is Qui of specification,
determine if a new guide with standard dimensions
would bring the clearance within t olerance. If so,
replace any guides as necessary and ream t o fit
If the st em·to·gu ide clearance is out of specification
with a new gu ide, also replace the valve.

VALVE GUIDE REPLACEMENT
Chill new valve guides in the freezer section of a
refrigerator for about an hour.
Do not use a torch
to heat the cylinder
head. rt may cause
warping

VALVE GUIDE DRIVER

Heat the cylinder head to 212 - 302 OF t100 -150 "e)
with a hot plate or oven.
Support the cylinder head and drive Oul the valve
guides out of the cylinder head from the combus·
tion chamber side.
TOOL:
Valve guide driver, 5.0 mm

07942·MA60000

Coal new O-rings with engine oil and install them
onto new valve guides.
While the cyl i nder is slill healed, drive the new
guides in the cylinder head from the camshaft side
until they are fully seated.
TOOL:
Valve guide driver, 5.0 mm

VALVE GUIDE DRIVER

07942-MA60000

Let the cylinder head cool t o room tempera ture.

7-11

CYLINDER HEADIVALVES
Ream the new valve guide after installation.
Use CUtting 011 on Insert the reamer from the combustion chamber
the reamerdunng side of the head and always rotate the reamer clock- "I!-~'
/hls opera/J()(I

r

wise.

TOOL:

Valve guide reamer, 5.0 mm

07984-MA60001 or
01984·MA60000
(U.S.A. only)

Clean the cylinder head thoroughly to remove any

metal particles.
Refaee the valva seat (page 7. 12).

VALVE SEAT INSPECTION/REFACING
Clean the intake and exhaust valves thoroughly to ~"!
remove carbon deposits.
~
Apply a light coali ng of Prussian Blue t o the valve
seat. lap the valves and seats using a rubber hose
or other hand-lapping 1001.

The valves cannof
be ground If 8 valve
face is burned or

I .!:'~ND-

I -A1!NG

i'6

~

~

.......

Remove and inspect the valves.
Inspect the width of each valve seat.

STANDARD:
1.0 _ 1.3 mm (0.04 - 0.05 in)
COOfacrs rM sear SERVICE LIMIT: 2.0 mm (0.08 in)

badlywom 01 rf If
uneven/),. replace

rhe valve.

If the seat is 100 wide, 100 narrow or has low spots,
the seat must be ground.

t
t

./

//
\

1.0-1.3 mm
(0.04 - 0.05 in)

VALVE SEAT REFACING
• Follow the refacing manufacturer's operating , - - - - - - - - - - - - - - - - - - ,
instructions .
• Be careful nOI to grind the seat more than neces·
say.

g \
6 L ' ~2 0 6 \ 600
0

45

7-12

CYLINDER HEADIVALVES
Use a 45" seat cutter to remove any roughness or
irregularities from the seat.

ROUGHNESS

TOOLS:

Seat cutter. 24 mm (45" IN)
Seat cutter, 20.5 mm (45 0 EX)
Cutter holder, S mm

07780·0010600
07780·0011000
07781·0010400

or equivalent commercially available in U.S .A.

~=

Use a 32° o r 30° cutter to remove the l Op 1/4 of the
existing valve seat material.
TOOLS:
Flat cutter. 24 mm (32 0 IN)
Flat cutter. 21 .5 mm (32 0 EX)
Cutter ho lder. 5mm

~

'= =~

~SEATWIDH

07780·0012500
07780·0012800
07781·0010400

30"

or equivalent commercially available in U.S.A .

I
_==============;
~=

Use a 50" cutter, remove 1/4 of the existi ng valve

~lD

seat material.
TOOLS:

'"

Intenor c utter, 22 mm (60" IN / EX )07780-0014202

Cutter holder, S mm

SEAT WIDTH

07781·0010400

'\...

or equivalent commercially available in U.S.A.

,

-----L
J

60"

Using a 45° seat cutter, cut the seat to the proper
wid th .
VALVE SEAT WIDTH: 1.0 - 1.3 mm (0 .04 - O.OS in)

Make su re that all pitting and irregular ities are

~=

-

= =~
1.0-1.3mm
10.04 - 0.05 in)

removed.

---------' 45"L

7-13

CYLINDER HEADIVALVES
If the contact area is too high on the valve, the seat
must be lowered using a 32°or 30° flat cuner.

~LD

CONTACTTOO HIGH

~

-:3W~

If the contact area is too low on the valve, the seat
must be raised using a 60° interior cutter.

CONTACT TOO LOW

~

al/ow/appmg conr-

pound to emer the
gUides.

'1 32 '

~gi'AT

..

~~
Excessive lapping
pressure may
deform or damage
the sea/. Do not

SEAT

L 60 '

After cuning the seat, apply lapping compound and

engine oil to the valve face, and lap the valve using
light pressure.
Change the angle of lappi ng tool frequently to prevent uneven seat wear.
After lapping, wash all residual compound off the

cylinder head and valve.

ASSEMBLY
CYLINDER HEAD
RIGHT SIDE COI'ER
9.8 N-m (1.0

....

7 Ibf.ft)

GASKET ~

ROCKER ARM SHAFT

ROCKER ARM

~

~SPRINGEAT

W~
V

VALVE COTTERS

7-14

~

~

111

INTAKE VALVE

I
VALVE GUIDE
STEM SEAL ~
VALVE SPRING

SPRING RETAINER

IIIiiiII

CAMSHAFT

CYLINDER HEADIVALVES
Clean the cylinder head assembly w ith solvent and
blow through all oil passages with compressed air.
Install the valve spri ng seats.
Install new stem seals.
Lubricate the valve stems with engine oil and insert
the valve into the valve guide.
To avoid damage t o the ste m seal, turn the valve
slowly when inserting .

"

STEM SEAL

SPRING

\

Install the valve spri ngs with the tightly wound coils
facing t he combustion chamber.
Install the valve spring retainers.

...
To prevent loss of
lenSlon, do nor
compress the valve

spnng more than
necessary.

~A

SPRING SEAT

Install the valve coners using the special tool as
shown .
TOOLS:
Valve spring compressor
07757-0010000
Valve spring compressor attachment
07959-KM30101

SPRING COMPRESSOR
Support the cylmder head above the
\NOr!:: bench so that
the valve heads will
not COflfact anything that cause
damage

Tap the valve stems gently w ith two plastic hammers as shown to seat the valve coners firmly.

Apply engine oil to the rocker arm inner and slipper
surfaces.
Install the rod:er
arm shaft With Its
threaded end facing
the fight side

Install the rocker arms and rocker arm shafts.

7-15

CYLINDER HEADIVALVES
Install a new gasket onto the cylinder head right

side cover.
Install the right side cover onto the cylinder head.

Install the right side cover bolts to the specified
torque.

BOLTS

TOROUE: 9.8 N'm 11.0 kgf-m , 7 IbUt)

INSTALLATION
Clean off the gasket material from the cylinder sur·
face.

Install the following:
-

New O-ring
Collar
Dowel pins
New gasket

c-RING!
COLLAR

7-16

CYLINDER HEADIVALVES
Route the cam chain through the cylinder head and
install the cylinder head.
Install the cylinder
head COlier with irS
arrow mark facing
down

Install a new gasket onto the cylinder head and then
install the cyl inder head cover.

HEAD C()VI'~

l

:

ARROW

Install the following:
-

Cap nuts/new sealing washers
Nut/new sealing washer

• Note the position of the washers and nuts.
Tighten the cylinder head cover nuts to the specified

torque.
TORQUE: '1 N'm (1 .1 kgf·m , 8 Ibf.ft)
Install and tighten the cylinder head mounting bolt.
If the cylinder was removed, tighten the cylinder

mount ing bolt.

Install a new O-ring into the groove in the intake ..- ...,,...- -- -..
manifold.

Install and tighten the intake manifold bolls.
Inslalilhe following:
-

Spark plug (page 3-8)
Muffler (page 2-5)
Camshaft (page 7-18)

7·17

CYLINDER HEADIVALVES

CAMSHAFT INSTALLATION
Apply clean engine oil to the camshaft lobes and

bearings.

-:7M

Ii

Install the camshaft into the cylinder head with its
cam lobes facing the combustion chamber while
holding the rocker arms.

Turn the crankshaft counterclockwise and align the
"T" mark on t he flywhee l with the index notch on

the left crankcase.

a.

cam sprocket
·
mark with the
Install the dowel
pin and with
cam its
sprocket.
index notch on the cylinder head .

:~

NOTCH

Inst all and tighten the cam sprocket bolts to the
specified torque.
TORQUE: 8.8 N·m (0.9 kgf·m , 6.5 IbUt)

DOWEL

Install the cylinder head left side cover onto the cylinder head with a new gasket .

7-18

i~;

!~i

CYLINDER HEADIVALVES
Set the tab on the side cover against the left side of
the stopper on the cylinder head.
Install the 6 mm bolt with a new sealing washer into
the cylinder head and tighten it.
Tighten the two right side cover bolts if the cylinder
head was disassembled.

TORQUE: 9.8 N 'm (1 .0 kgf·m, 7 Ibf.ftJ
Install the spark plug cap.

Install the tensioner push rod, spri ng and sealing
bolt (page 10-7).
Adjust the valve clearance (page 3·10).
Pour the recommended engi ne oil (page 3-1 1).

SEALING BOLT

7-19

8. CYLINDER/PISTON

COMPONENT LOCATION ............................. 8·2

PISTON REMOVAL .. ·.. · .. ·· .. · .. · .. · ...... · ............ ·.. 8-4

SERVICE INFORMATION .............................. 8· 3

CYLINDER / PISTON INSPECTION ................ ·8·5

TROUBLESHOOTING .................................... 8· 3

PISTON INSTALLATION ................................ 8·8

CYLINDER REMOVAL ................................... 8·4

CYLINDER INSTALLATION ............ · .............. ·8·8

8-1

t

CYLINDER/PISTON

COMPONENT LOCATION

9.8 N'm '1.0 kgf·m. 7lbHt)

8-2

CYLINDER/ PISTON

SERVICE INFORMATION
GENERAL
• The cylinder and piston service can be done with the engine installed in the frame.
• Camshaft lubrication oil is fed to the cylinder head through an orifice in the cylinder head, cyl inder and crankcase. Be
sure that this orifice is not clogged and that the O-rings and dowel pins afe in place before installing the cylinder.

SPECIFICATIONS

TORQUE VALUE
Cam chain guid e roller pin bolt

9.8 N'm (1.0 kgf·m, 7 Ibf·ft)

TROUBLESHOOTING
• If the performance is poo r at low speeds, check for white smoke in the crankcase breather hose. if the hose is smoky,
check for a seized piston ring.

Cylinder compression is too low, or engine is hard to start
• Blown cylinder head gasket
• Worn, stuck or broken piston ring
• Worn or damaged cylinder or piston
Cylinder compression is too high, or engine overh eats or knocks
• Ca rbon deposits on the cylinder head andlor p iston crown
Piston sounds
• Worn cyli nder, piston and/or piston ring
• Worn piston pin hole and piston pin
• Worn connecting rod small end
Excessive smoke
• Worn, stuck o r broken piston ring

8-3

CYLINDER/PISTON

CYLINDER REMOVAL
Remove the cylinder head (page 7·7).

CYLINDER

Remove the cam chai n guide roller pin bolt, sealing
washer and guide roller.
Remove the mounting boll and cylinder .

GUIDE
Remove the following:
-

Rubber packing

-

Gasket

-

Dowel pins

PISTON REMOVAL
Do no/leI the P!Ston pm clip!> fall mID
the crankcase

Do not damage the
PIS/on rings dunng
removal

8-4

Remove the piston pin clip with pliers.
Press the piston pin Qut of the piston and remove

the piston.

Remove the piston rings.

CYLINDER/PISTON

CYLINDER/PISTON INSPECTION
Inspect the cyli nder bore for wear or damage.
Measure the cvl inder I.D. in X and Y axis at three

levels.
Take the maximum reading t o deter mine the cylinder wear.
SERVICE LIMIT: 39.05 mm (1 .537 in )

Calculate the piston-Io-cylinder clearance.
Take a maximum reading to determine the clearance.
Refer to page 8-6 for measurement of the piston
0 .0.
SERVICE UMIT: 0.15 mm (0.006 in )

Calculat e the taper and out of round at three levels
in X and Y axis. Take the maximum reading to
determine them.
SERVICE LIMITS:

Taper:
Out of round :

0.10 mm (0.004 in )
0.10 mm (0.004 in )

The cylinder must be rebored and an oversize pis·
ton fined if the service limits are exceeded .
The following oversize pistons are available:

TOP
MIDDLE

BOTTOM

0.25 mm (0.010 in )
0.50 mm (0.020 in )
The piston to cyl inder clearance for the oversize piston must be: 0.010 - 0.040 mm (0.0004 - 0.0016 in).
Inspect the top of the cyl inder for warpage.
SERVICE UMIT: 0.05 mm (0.002 in )

Remove any carbon deposits from the pist on ring
grooves, using an old piston ring as shown.

8-5

CYLINDER/PISTON
Temporarily install the piston rings to their proper
position with the mark facing up.
Measure the piston ring-to-ring groove clearance
with the rings pushed into the grooves.

SERVICE LIMITS:
Top:
0.12 mm (0.005 in)
Second: 0.12 mm (0.005 in )

Inspect the piston for wear or damage.
Measure the diameter of the piston at B mm (0.3 in)
from the bottom of skirt and 90 degrees to the piston pin hole.
SERVICE LIMIT: 38.90 mm (1.531 in)

8 mm (0.3 in)
Measure the piston pin bore.
SERVICE LIMIT: 13.06 mm (0.514 in)

Measure the 0 .0 . of the piston pin.

SERVICE LIMIT: 12.98 m m (0.511 in)
Calculate the piston-ta-piston pin clearance.
SERVICE LIMIT: 0.08 mm (0.003 in )

8-6

CYLINDER/PISTON
Measure the connecting rod small end 1.0 .
SERVICE LIMIT: 13.08 mm (0.515 in)
Calculate the connecting rOd-ta-piston pin clear-

ance.
SERVICE LIMIT: 0.12 mm (O.OOS in )

Push the rmgs mfO
the cylinder wl/f!
the top of the PISron fO be sure Ihey
are squarely In the

cylmder

Insert the piston ring squarely into the bottom of the
cylinder and measure the ring end gap.
SERVICE LIMITS:

Top:
Second:

0.5 mm (0.02 in)

0.5 mm (0.02 in)

Oil (side rail): 1.1 mm (0.04 in)

PISTON RING INSTALLATION
Clean the piston ring grooves thoroughly and install
the piston rings.

• Apply oil to the piston rings.
• Avoid piston and piston ring damage during
installation.
• Install the piston rings with their marking facing
up.
• 00 not confuse the top and second rings.

Space the piston ring end gaps 120 degrees apart .
Do not align the gaps in the oil rings (side rails ).
After installation, the rings should rotate freely in
the ring grooves.

r-___;.T.o-0P RING

IT'2m-----SECOND RING

SPACER

Oil RINGS

8-7

CYLINDER/PISTON

PISTON INSTALLATION
Clean off any gasket materials from the crankcase
surface.

Apply oil t o the piston pin outer surface.
InSlall the piston with its "IN" mark facing the intake

side.
Install the piston pin and secure it with new piston

pin clips.

• 00 not align the piston pin dips end gap with the
piston cut-out.
• Do not let the piston pin clips fall into the can-

ke8se.

fI CLIP
CYLINDER INSTALLATION
Apply engi ne oil to a rubber packing _
Install the dowel pins, new gasket and new rubber
packing.

Coat the cylinder bore, piston outer surface and pisIon ring g rooves with clean engine oil.
Route the cam chain through the cyli nder and install
the cyli nder while compressing the piston rings.

• Avoid piston ring damage during installation.
• Do not let the cam chain fall into the crankcase.

8-8

~

~

ItiijIIII

CYLINDER

CYLINDER/PISTON
Apply engine oil to the guide roller inner surface.
Install the cam chain guide roller, new sealing
washer and pin bolt.
Tighten the cam chain guide rol ler pin bolt to the
specified torque.
TORQUE: 9.8 N·m (1.0 kgf·m , 7 Ibf.ft)
Install the cylinder mounting bolt but do not tighten
it yet.
TlgfHen the cylm-

Install the cylinder head (page 7-1 6).

der mounting bolt
aher Installing the
cylinder head

--""1

GUIDE

8-9

9. CLUTCH/GEARSHIFT LINKAGE

COMPONENT LOCATION ····························· 9-2

CLUTCH························ ·· ·························· ·······9-6

SERVICE INFORMATION ······························ 9-3

GEARSHIFT LINKAGE ···· ······························9-16

TROUBLESHOOTING .................................... 9-4

RIGHT CRANKCASE COVER
INSTALLATION ············································· 9-19

RIGHT CRANKCASE COVER REMOVAL······ 9-5

9-1

CLUTCH/ GEARSHIFT LINKAGE

COMPONENT LOCATION

17 N' m (1.7

12Ibf.ft)

13 N'm (1.3

42 N·m (4.3 kgf.m . 31 Ibf.ft)

9-2

CLUTCH / GEARSHIFT LINKAGE

SERVICE INFORMATION
GENERAL
• This section covers service of the clutch and gearshift linkage. All service can be done with the engine installed in the

frame .
• Use care not to allow dust or dirt to enter the engine.

SPECIFICATIONS

TORQUE VALUES
Clutch outer cover screw
Clutch lock nut
Clutch assembly screw
Shift dru m stopper arm bolt
Shift return spri ng pin bolt

Gearshift cam plate bolt

4.4 N·m (0.45 kgf·m, 3.3 Ibf.ft)

42 N'm (4.3 kgf-m, 31 IbHt)
5.9 N·m (0.6 kgf·m, 4.3 Ibf·ft)
13 N-m (1.3 kgf·m, 9 Ibf.h)
29 N'm (3.0 kgf·m, 22 Ibf.ft)
17 N'm (1.7 kgf·m, 12Ibf.ft)

TOOLS
Lock nut wrench, 20 x 24 mm
077 16-0020100

Extension bar
07716·0020500

Flywheel holder
07725-0040000

or equivalent commercially avai lable in U.S.A.

or equivalent commercially available in U.S.A.

9-3

CLUTCH/GEARSHIFT LINKAGE

TROUBLESHOOTING
Clutch slips when accelerating
• Incorrect clutch adjustment
• Worn clutch disc
• Weak clutch springs

• Faulty clutch weight
• Transmission oi l mixed with molybdenum or graphite additive

Motorcycle creeps with clutch disengaged
• Incorrect clutch adjustment

•
•
•
•

Clutch plate warped
Faulty clutch lifter
Faulty clutch weight
Incorrect engine oil weight

Hard to shift
•
•
•
•

Incorrect clutch adjustment
Loose stopper plate bolt
Damaged stopper plate and pin
Damaged gearshift spindle

Transmission jumps out of gear
• Worn shift drum stopper arm
• Weak or broken shift arm return spring
• Loose stopper plate bolt

Gearshift pedal w ill not return
• Weak or broken gearshift spindle return spring
• Bent gearshift spindle

9-4

CLUTCH / GEARSHIFT LINKAGE

RIGHT CRANKCASE COVER REMOVAL
Drain the engine oil (page 3·11).
Remove the footpeg bar (page 6-4).
Remove the bolt and kickstarter pedal.
Unhook the brake pedal return spring.
loosen the rear brake pedal adjusting nut and lower
the brake pedal.

Remove the eight bolts and right crankcase cover.

Remove the gasket and dowel pins.

Remove the clutch adjusting nut, washer and 0ring.
Remove the cl utch lifter/adjusting boft assembly.

9-5

CLUTCH/GEARSHIFT LINKAGE
Check the kickstarter oil seal for damage, replace if
necessary.

CLUTCH
REMOVAL
Remove the right crankcase cover (page 9-5).
Remove the ball retainer and spring.
Remove the clutch lifter lever.

Remove the oil through and sprig.
Remove the clutch lifter cam plate.

Remove the screws and clutch outer cover and
bearing.

9-6

CLUTCH/GEARSHIFT LINKAGE
Straighten the tab of the lock washer.

Hold the clutch outer with the flywhee l holder and
remove the lock nut using the special tools as
shown.
TOOLS:
Flywheel ho lder

Lock nut wrench, 20 x 24 mm
Extension bar

07725-0040000
(Equivalent commerciallyavailable
in U .S.A.)
07716-0020100
07716-0020500
(Equivalent commercia llyavailable
in U.S.A.)

Remove the lock washer B, 14 mm lock washer and
clutch assembly.

1.1.';;;;';;;

Remove the primary drive gear.

9-7

CLUTCH/GEARSHIFT LINKAGE
Remove the clutch center guide.

Remove the snap ring and primary driven gear from
the mainshaft.
Remove the collar from the crankshaft.

DISASSEMBLY
Remove the following:
-

-

Clutch disc A

-

Clutch disc B
Clutch disc A
Free springs
Clutch plate A

Remove the clutch center and drive gear outer.

9-8

SET I

Set ring
Clutch plate B

CLUTCH CENTER

CLUTCH / GEARSHIFT LINKAGE
Remove the four damper springs.
Remove the four screws and plain washers.

Remove the
springs.

drive

plate

assembly

and

SCREWS! WASHERS

clutch

Remove the clutch weight stopper ring.
Remove the clutch weight/center ring.

DRIVE PLATE ASSEMBLY

CllJTCHWEIGHT/CENTER RING

STC)P';"R R)NG

INSPECTION
Clutch lifter beari ng
Turn the inner race of the litter bearing with your
finger.
The bearing should turn smoothly and freely without excessive play.
Also check that the bearing fits tightly in the clutch

outer cover.
Replace the bearing if necessary.

BEARING

9-9

CLUTCH/GEARSHIFT LINKAGE
Clutch spring
Measure the clutch spring free length.
SERVICE LIMIT: 19.4 mm (0.76 in)

Clutch disc
Replace the clutch discs if they show signs of scoring or discoloration.
Measure the disc thickness of each disc.
SERVICE LIMITS:

Clutch disc A:
Clutch disc B:

2.3 mm (0.09 in)
3.0 mm (0.12 in)

Clutch plate

Check each disc plate for warpage on a surface plate
using a feeler gauge.
SERVICE LIMIT: 0.20 mm (0.008 in)

Primary drive gear/clutch center guide
Check the primary drive gear and clutch center
guide for excessive wear or damage.

Measure the LO.of the primary drive gear.
SERVICE LIMIT: 21.05 mm (0.829 in)

Measure the 0 .0. and I.D. of the clutch center guide.
SERVICE LIMITS:
1.0.: 17.04 mm (0.671 in)
0 .0.: 20.90 mm (0.823 in)

9-10

CLUTCH/GEARSHIFT LINKAGE
Crankshaft
Measure the crankshaft 0.0. al clutch center guide.
SERVICE LIMIT: 16.90 mm (0.665 in )

Drive gear o uter/ clutch center
Check t he drive gear outer and clutch center for
excessive wear or damage .

CLUTCH CENTER

DRIVE GEAR OUTER

ASSEMBLY

STelPPI' R RING

CLUTCH WEIGHTfCENTER RING
DRIVE

OUTER
FREE SPRING
CLUTCH DISC A

cum:H PLATE B

CLUTCH OUTER

CLUTCH C""<TER

eu) le:H DISC B

SET RING

9-11

CLUTCH / GEARSHIFT LINKAGE
Install the clu tch weight/center ring onto the drive

plate by aligning the ring end with the plate hole.

CLUTCH WEIGHTfCENTER RING

Install the stopper ring by aligning the ring end with
the plate groove.

_.

't

, " . q .1,

.

·

~

'

, '.....:<J

_~

"'- '" ~

'p '!$:,.\.. .' ..,

I ':'

.~

• •""l

....."
~'

.-

_

( "t. • -

•

d"

•" . 1"I

/

"

STOPPER RING
Install the clutch springs onto the clutch outer holes.
Install the drive plate assembly into the clutch outer
aligning its bosses with the clutch springs.

DRIVE PLATE

Install the plain washers and screws.
Tighten the screws in a crisscross pattern in 2-3

steps.
TORQUE: 5.9 N'm (0.6 kgf·m, 4.3 Ibf.ft)

Install the damper springs as shown.

9-12

SPRINGS

A~.SEMILY

CLUTCH/GEARSHIFT LINKAGE
Install the drive gear outer and clutch center.

DRIVE

OUTER

Install the following:
-

SPRINGS

Clut ch plate A
Free springs

A
-

Clutch
Clutch
Clutch
Clutch

disc A
disc B
disc A
plate B

• Install the clutch disc A with its flat su rface facing

the clutch disc B.
• Install the clutch plate B with its chamfered side
facing the clutch disc A.

- , DISCB
Install the cl utch set ring with its chamfered side
facing the clutch plate 8.

PLATE B

SET

9-13

CLUTCH/GEARSHIFT LINKAGE
INSTALLATION
Install the collar onto the crankshaft.

Install the primary driven gear onto the mainshaft
and secure it with the snap ring.

Apply engine oil to the clutch center guide and
install it onto the crankshaft.

Install the primary drive gear.

Install the clutch assembly onto the crankshaft.

Install a new 14 mm lock washer by aligning its
short tabs with the grooves in the drive plate.

9-14

CLUTCH/GEARSHIFT LINKAGE
Install t he lock washer B with its "OUT SIDE " mark
facing out.

Install the lock nut.
Hold t he clutch outer with the flyw heel holder and
t ighten the lock nut to the specified torque using the
special tools as shown.
TOOLS:
Flywheel holder

lock nut wrench, 20
Extension bar

x 24 mm

07725-0040000
IEquivalent commerciallyavailable
in U.S.A.)
07716-0020100
07716-0020500
IEquivalent com merciallyavailable
in U.S.A.)

TORQUE: 42 N ·m 14.3 kgf·m , 3llbf·ft )
If the lock nut g roove does not align with the lock
washer tab, further tighten the lock nut and align .
Bent up the t ab of t he 14 mm lock washer into t he
groove of the lock nut.

Clean the inside of t he clutch outer and outer cover
(page 3-12) .
Install the bea ring and a new gasket onto the dutch
outer cover .

9-15

CLUTCH/GEARSHIFT LINKAGE
Install the clutch outer and tighten the screws to the
specified torque.
TORQU E: 4.4 N'm (0.45 kgf-m.3.3 Ibf.ttl

Install the clutch lifter cam plate.
Install the oillh rough spring and oillhrough .

Install the spring, ball retainer and clutch lifter lever.
Install the right crank case cover (page 9- 19).

GEARSHIFT LINKAGE
REMOVAL
Remove the clutch and primary driven gear (page 96).
Clean the gearshift Remove the pinch bolt and gearshift pedal.
spmdle end /0 pre.vent din from amm-

mg rhe crankcase

G.,\RSHFTPEDAL

9-16

CLUTCH/GEARSHIFT LINKAGE
Remove the bolt, stopper arm and return spring .

Pull down the gearshift arm, then pull out the gearshift spindle from the crankcase.

Remove the bolt and shift cam plate.

Remove the dowel pins and gearshift drum pins.

9-17

CLUTCH/GEARSHIFT LINKAGE
INSPECTION
Check the gearshift spindle for bends or other dam-

age.

INSTALLATION
Install the four gearshift drum pins and two dowel
pins.
Install the cam plate by aligning the pin hole with
the dowel pins and aligning the drum pin with the

denl.

Install the cam plate and tighten the bolt to the specified torque.
TORQUE: 17 N'm (1.7 kgf·m.12 Ibf.ft)

InSlall the gearshift spindle into the crankcase by
aligning the return spring ends with the spring pin
w hile pushing down the gearshift arm and set the
gearshift arm to the shift drum pins.

9-18

~

CLUTCH/GEARSHIFT LINKAGE
Install the return spring and stopper arm as shown
and tighten the boll to the specified torque.
TORQUE: 13 N ·m (1 .3 kgf-m .9Ibf·ft )

Install the gearshift pedal so that it is same height as
the footpeg.

Install the pinch bolt and tighten it.
Install the primary driven gear and clutch assembly
(page 9-14)

RIGHT CRANKCASE COVER
INSTALLATION
Install the clutch lifter plate/adjusting bolt into the
right crankcase cover by aligning its pin w ith the
hole in the crankcase cover.

Coat a new O-ring with engine oil and install it into
the cover groove properly.
Install the washer and lock nut.

WASHER

9-19

CLUTCH/GEARSHIFT LINKAGE
Install the dowel pins and a new gasket.

Install the right crankcase cover.

Install and tighten the eight cover bolts in a crisscross pattern several steps.

Install the kickstaner pedal as shown and tighten
the bolt.
Hook the return spring to the brake pedal and spring
holding pin as shown.
Install the footpeg bar (page 6-6),
Adjust the brake pedal free play (page 3-16).
Pour the recommended engine oil (page 3-11),
Adjust the clutch (page 3-17).

9-20

10. ALTERNATOR/CAM CHAIN TENSIONER

COMPONENT LOCATION ........................... 10·2

FLYWHEEL/STATOR REMOVAL ················· 10·4

SERVICE INFORMATION ····························10·3

CAM CHAIN TENSIONER ·········· ·················· 10·6

TROUBLESHOOTING .................................. 10·3

STATOR/ FLYWHEEL INSTALLATION ········10·8

10-1

ALTERNATOR/CAM CHAIN TENSIONER

COMPONENT LOCATION

16 N'm (1.6 kgf·m , 121bHt)

23 N·m (2.3

.

...

17 Ibf·ft)

41 N'm (4.2 kgf·m, 30 Ibf·ft )

10-2

ALTERNATOR/CAM CHAIN TENSIONER

SERVICE INFORMATION
GENERAL
• This section covers service of the flywheel, alternator and cam chain tensioner. All service can be done with the engine
installed in the frame.
• Refer to 14-3 for alternator stator inspection.

SPECIFICATIONS

F

Cam chain

ten"'io;C~

ITEM

-="'tl:

P~"'hOd.D=

:=;

" ''''''''_ _ _ _--,---.'" Unit: mm (i n)
SERVICE lI Mi T ~

, - - - - -S'TANDARD

Spring free lengt."h_ _~

lg l ~.9B5;:Jl2Oot

..
1 1",
1.,,3 (4.38)

.4~71B

~O'o.41l72!I

C=t:

~1.94IO70

=1

_ _ _--'--" 00 (3.9:!-1_ _---'

TORQUE VALUES
Flywheel nut
Cam chain tensioner sealing bolt
Cam chain tensioner pivot bolt

41 N·m (4.2 kgf·m, 30 Ibf.ft)

23 N·m (2.3 kgf·m, 17 Ibf.h)
16 N·m (1.6 kgf·m, 12 Ibf·h)

TOOLS
Universal holder

07725-0030000

Flywheel puller
07933-GEOOOOO
(Not available in U.S.A.)

or 07933-0010000 U.S.A. only

TROUBLESHOOTING
Excessive engine noise
• Worn or damaged cam chain tensioner
• Weak or damaged cam chain tensioner spring

l oose cam chain
• Weak or damaged cam chain lensioner spring
• Improper push rod oper ation

10-3

ALTERNATOR/CAM CHAIN TENSIONER

FL YWHEELISTATOR REMOVAL
Drain the engine oil (page 3- 11).
Disconnect the alternator and ignition pulse generator connectors.

Remove the bolt and gearshift pedal.

Remove the three bolts and left crankcase cover.

Hold the flywheel using the universal holder and
remove the flywheel nul.

TOOL:
Universal holder
Remove the washer.

10-4

07725-0030000

ALTERNATOR/CAM CHAIN TENSIONER
Remove the flywheel using the special toot.
TOOL:
Flywheel puller

Flyw heel puller

07933·GEOOOOO
(No t available i n
U.S.A.) or
07933·0010000
(U.S.A. ONLY)

Remove the woodruff key.

Remove the bo lt and wire clamp.
Release the wi re grommet from the crankcase
groove.

Remove the ignition pulse generator mounting
bolts and wire clamp.
Remove the stator mounting bolts.
Remove the ignition pulse generator and stator as
an assembly.

10-5

ALTERNATOR/ CAM CHAIN TENSIONER
Remove the screws and stator base.

Remove the O-rings from the crankcase.
Remove the O-rings from the stator base.

CAM CHAIN TENS lONER
REMOVAL
Remove the stator base (page 10-4).

Remove the sealing bolt washer, l ensioner spring
and push rod .

Remove the pivot bolt, l ensioner arm and tensioner
rolter.

10-6

~r.:

":~­

ALTERNATOR/CAM CHAIN TENSIONER
INSPECTION
Measure the tensioner spring free length .

SERVICE LIMIT: 100 mm (3.9 in)

Check the push rod for wear or damage.
Measure the push rod

a.D.

SERVICE LIMIT: 11.94 mm (0.470 in)

INSTALLATION
Install the cam chain tensionar railer, tensioner arm [~
and pivot boll.
Tighten the pivot bolt to the specified torque.

J

TORQUE: 16 N'm (1.6 kgf.m . 12 IbHt)

Check the sealing washer is in good condition,
replac e if necessary.
Installlhe spong
WIth {/'Ie tapered
Side facing the push

wd.

Install the push rod, spring, washer and seating bolt.
Tighten the sealing bolt to the specified torque.

TORQUE: 23 N'm (2.3 kgf·m. 17 Ibf.ft)

~

-

BOL TIWASHEA

10-7

ALTERNATOR/CAM CHAIN TENSIONER
Remove the crankcase seating bolt and washer.
Fill the push rod with 1 - 2 cm 3 of engine oil through
the filler hole.

Check the sealing washer is in good condition and

install the sealing washer and bolt.
Tighten the bolt securely _

STATOR/FLYWHEEL INSTALLATION
Check the stator base oil seal for damage. replace if
necessary.
Apply engine oil to the lip of the oil seal.

Apply engine oil to new O-rings. install them into

the crankcase grooves.
Apply engine oil to new D-ring, install it into the sta-

tor base groove.

Be careful not fO
damage rheOlfseal
lips

10-8

Install the stator base and tighten the screws

securely.

ALTERNATOR/ CAM CHAIN TENSIONER
Install the ignition pulse generator and stator as an

assembly.
Install the ignition pulse generator mounting bolts
and wi re damp.
Install the stator mounting bolts.

Set the wire grommet into the crankcase groove.
Install t he wire clamp and tighten the bolt.

Clean any oil from the tapered portion of the crank·
shaft and flywheel.
Install the woodruff key into the crankshaft groove.

Install t he flywheel by align ing the key way in the
flywheel with the woodruff key on the crankshaft.
Install the washer.

10-9

ALTERNATOR/CAM CHAIN TENSIONER
Install the flywheel nut .

Hold the flywheel using the universal holder and
tighten the nut to the specified torque.

TOOL:
Universal holder

07725-0030000

TORQUE: 41 N 'm (4.2 kgf·m, 30 Ibf·ft )

Install the left crankcase cover and tighten the three
bolts.

Install the gearshift pedal so that it is same height as
the footpeg .
Inst all the pinch bolt and tighten it.

Connect the ignition pulse generator and alternator
connectors.

10-10

11. CRANKSHAFTITRANSMISSION/KICKSTARTER

COMPONENT LOCATION ········· .. ················ 11 -2

CRANKSHAFT··············································· 11 -6

SERVICE INFORMATION ··················· ········· 11 -3

TRANSMISSION ··········································· 11 -8

TROUBLESHOOTING ····························· .... · 11-4

KICKSTARTER ······························· ··· ·········· 11 -14

CRANKCASE SEPARATION ························ 11-5

CRANKCASE ASSEMBLY· ··· ······················ 11 -16

11-1

CRANKSHAFTITRANSMISSION/KICKSTARTER

COMPONENT LOCATION
12 N-m (1.2 kgf·m, 9Ibf·ft )

11-2

CRANKSHAFT/TRANSMISSION/KICKSTARTER

SERVICE INFORMATION
GENERAL
• The crankcase must be separated to service the crankshaft, transmission and kickstarter .
• The following parts must be removed before separating the crankcase.
- Alterna t or/cam chain tensioner (page 10-4 )
- Clutch /gearshift linkage (page 9-6)
- Cylinder head (page 7-7)
- Cylinder/piston (page 8-4)
- Engine (page 6·4 )
- Oil pump (page 4-4 )

SPECIFICATIONS
clearance

Radial clearance

I .
I

TORQUE VALUE
Shift drum bott

12 N·m ( 1.2 kgf·m , 9Ibf.ft)

TOOLS
Driver
07749-0010000

Anachment 37 x 40 mm

07746·0010200

Pilol, 17 mm
07746-0040400

J
11-3

CRANKSHAFTITRANSMISSION/KICKSTARTER

TROUBLESHOOTING
Hard to shift
•
•
•
•
•

Incorrect clutch adjustment
Bent shift fork
Bent fork claw
Damaged shift drum cam groove
Incorrect transmission oil weight

Transmission jumps out of g ear

• Worn gear dogs or slots
• 8enl shift fork
• Broken shift drum stopper
Excessive noise
• Worn crankshaft big end bearing
• Worn crankshaft journal bearing

11-4

CRAN KSHAFT ITRANSMISSION/KICKSTARTER

CRANKCASE SEPARATION
Refer to Service
Information (page
11-3) for removal of
necessary parts
before separating
the crankcase.

Remove the snap ring from the kickstarter spindle.
Unhook the return spring and remove the retainer
and return spring.

Remove the rubber cap.

Remove the shift drum bolt and washer.

Remove the cam chain.

CLAMP

BOLTS

Loosen the seven crankcase bolts in a crisscro ss
pattern in 2 - 3 steps and remove them.
Remove the damp.

11-5

CRANKSHAFTITRANSMISSION/KICKSTARTER
Place the crankcase with the left side down.
Separate the right and left crankcase halves.

RIGHT CRANKCASE

Remove the gasket and dowel pins.

DOWEL PINS

CRANKSHAFT
REMOVAL
Remove the crankshaft from the left crankcase.

If necessary, remove the cam chain guide spindle
and guide sprocket.

11-6

CRANKSHAFT

CRANKSHAFTITRANSMISSION/KICKSTARTER
INSPECTION
Measure the connecting rod big end side clearance
with a feeler gauge.
SERV ICE LIMIT: 0.60 mm (0.024 in)

Measure the connecting rod big end radial clearance at symmetrical points as shown.
SERVICE LIMIT: 0.05 mm (0.002 in)

Turn the outer race of the crankshaft bearing with
your finger.
The bearing shou ld turn smoothly and quietly.
A lso check that the inner race of the bearing fits
tightly on the crankshaft.

Check the timing sprocket for wear or damage.

If you are replacing the timing sprocket, align the
valley of the sprocket teeth with the center of woodruff key groove as shown.

11-7

CRANKSHAFT ITRANSMISSION/KICKSTARTER
Place the crankshaft on a stand or V-blocks and
measure the runout using a dial gauge.
The measuring locations are shown in the il lustration.
SERVICE LIMIT: 0.10 mm (0.004 in )

INSTALLATION
Install the guide sprocket and guide spindle.

Pour 1 - 2 cm 3 of engine oil into the connecting rod
big end bearing.
Install the crankshaft into the left crankcase, being
careful not to interfere the connecting rod with the
crankcase.
Assemble the crankcase halves (page 11-16),

TRANSMISSION
REMOVAL
Remove the kickstarter spindle (page 11 -1 4),
Remove the mains haft, countershaft and shift drum
as an assembly.

11-8

30 mm (1.2 in)

26 mm (1.0 in)

CRANKSHAFTITRANSMISSION/KICKSTARTER
TRANSMISSION OISASSEMBL Y
Disassemble t he mainshah, countershah and shift
drum.

MAINS HAFT

SHIFT DRUM

TRANSMISSION INSPECTION
Check the gea r dogs, dog holes and tee th fo r abnormal wear or lack of lubrication.
Measu re the 1.0. of each gear.
SERVICE LIMITS:
M2: 17.10 mm (0.673 in)
C1 : 23.10 mm (0.909 in)
C3: 20.10 mm (0.791 in)

M easure the 1.0. and 0.0. of Cl gear bushing.
SERVICE LIMITS:
0 .0 .: 22.93 mm (0.903 in)
1.0 .: 20.08 mm (0.791 in)

Calculate the C1 gea r-la-bushing clearance.

SERVICE liMIT: 0.10 mm (0.004 in )
Check the sh ifter groolle of the shifter gear for
excessive wear or damage.

Measure the
counlershaft.

0 .0 .

of

the

mainshaft

and

SERVICE LIMITS:
AT M2 gear: 16.95 mm (0.667 in)

AT C1 gear: 19 .94 mm (0.785 in )

M2

- --..
I

--

..

_.-

Calculate the M2 gear-la-shaft clea rance.
SERVICE LIMIT: 0.10 mm (0.004 in)
Calculate the C1 gear bushing-to-shaft clearance.
SERVICE LIMIT: 0.10 mm (0.004 in '

Cl

11-9

CRANKSHAFTITRANSMISSION/KICKSTARTER
TRANSMISSION ASSEMBLY
Assembly is in the reverse order of disassembly.

: Gear sliding surface, gear

C3 GEAR (25T)

teeth and shifter groove

C1 GEAR (36T)

COUNTEASHAFT

M3

MAIINSI"AFT "", llTJ

GEARSHFT ORUM DISASSEMBLY
Remove the guide pin clips.
Remove the guide pins, then remove the shift forks.

CLIP

GUIDE PIN

Inspect the shift drum grooves for wear o r damage.
Measure the 0.0. of the shift drum.
SERVICE LIMIT: 33.93 mm (1 .336 in)

11-10

CRANKSHAFTITRANSMISSION/KICKSTARTER
Measure the shift fork I.D.
SERVICE LIMIT: 34.14 mm (1.344 in )

Measure the sh ift fork claw thickness.
SERVICE LIMIT: 4.60 mm (0.181 in )

SHFT DRUM ASSEMBLY

.. -

---; ----T--" -

.

~ClIP

\ ~-

SHIFT FORK

GUIDE PIN

$HIFTDRUM

11-11

CRANKSHAFT ITRANSMISSION/KICKSTARTER
Apply engine oil to the shift drum outer surface.
Install the shift forks onto the gearshift drum.
Install the guide pins and secure them with the

CLIP

clips.
If the washer has been removed, install a new
washer and bend the tab to lock the washer.

GUIDE PIN

TRANSMISSION BEARING
REPLACEMENT
Turn the inner race of each bearing with your finger.
The bearings should turn smoothly and quietly.
Also check that the bearing outer race fits tightly in
the crankcase.
Remove and discard the bearing if the race does not
turn smoothly, quietly. or fils loosely in the crank-

case.

Remove the countershaft oil seal.

Drive the mainshaft bearing out of the right crank-

case.

11-12

fI

WASHER

CRANKSHAFT ITRANSMISSION/KICKSTARTER
Drive the countershah bearing out of the left crank-

case.

Drive new ma i nshaft bearing into the crankcases
using the special tools as shown.

TOOLS:
Driver:
Attachment, 37 x 40 mm :

07749-0010000
07746·0010200

Pitot, 17 mm:

07746·0040400

Drive new countershaft bearing into the crankcases
using the same tools.

Apply engine o i l to a new countershaft oil seal lip.
Install the countershaft oil seal.

TRANSMISSION INSTALLATION
Apply clean engine oil to the transmission gears
and shift drum.
Set the right fork into the M3 gear and the left fork
into the C2 gear to assemble the mainshaft.
countershaft and shift drum as shown.

SHIFT DRlJM/:SHII".F<)RKS

COUNTERSHAFT

11-13

CRANKSHAFT ITRANSMISSION/KICKSTARTER
Install the mainshaft, countershaft and shift drum as
an assembly into the left crankcase.

Rotate the shift drum to check the transmission

operation.
Install the kickstarter spindle (page 11-15).

KICKSTARTER
REMOVAL
Separate the right and left crankcase (page 11-5)

"IC"-" '''.' SPINDLE

Remove the kickstarter spindle from the right crank-

case.

DISASSEMBLY
Remove the washer.
Remove the snap ring and starter ratchet/spring.

RATCHET
Remove the snap ring. washer and starter pinion

gear.
SNAP RING

11-14

CRANKSHAFTITRANSMISSION/KICKSTARTER
INSPECTION
Check the kickstarter spindle for bending .
Check the friction spring for fat igue.

KICKSTARTER SPINDLE

Check each part for wear or damage, replace if nec-

essary.

PINION GEAR

STARTER RA(;HET/SI'R"iG

ASSEMBLY
Assembly is in the reverse order of disassembly.

KICKST"AR"r ER SPINDLE

WAS HER

PINION GEAR

SNAP RING
FRICTION SPRING

STARTER RATCHET

SNAP RING

INSTALLATION
Install the kickSl arter spindle by aligning its friction
spring with the groove in the left crankcase as
shown.

KICKSTAATER SPINDLE

Assemble the crankcase halves.

ALIGN

CRANKSHAFTITRANSMISSION/KICKSTARTER

CRANKCASE ASSEMBLY
Dress the matmg Clean the crankcase mating surfaces before asseman all bling.
slona If necessary
Install the dowel pins and a new gasket onto the leh
/0 correcr any mmor
crankcase.
roughness Of Irreg5UrfBC(lS with

DOWEL PINS

ularllles

Make sure thSI the
gasket slays In
place

Install the right crankcase over the left crankcase.

Install the seven bolts with the clamp and tighten
them in a crisscross pattern in 2 - 3 steps.
Apply engine oil to the cam chai n and install it.

Install the washer and bolt to the shift drum, then
tighten the bolt to the specified torque.
TORQUE: 12 N'm (1.2 kgf·m , 9Ibf.ft)

11-16

BOlTIWASHER

CRANKSHAFTI TRANSMISSION / KICKSTARTER
Install the rubber cap.

Install the return spring and retainer onto the kick starter spindle.
Temporarily install the kickstarter pedal.

:= =~

~L;:

~;

~:r,

~iG

Install the spring ends onto the retain er and crankcase lug as shown and press the retainer to set its
edge against the stepped part of the crankcase
while turning the pedal countercl ockwise.

Install the snap ring into the groove in the kick·
starter spindle securely.

11-17

12. FRONT WHEEL/BRAKE/SUSPENSION/STEERING

COMPONENT LOCATION ,· ..... ' ... ,... ,..... ,.... , 12-2

FRONT WHEEL ............................................ ,12-8

SERVICE INFORMATION ............................ 12-3

FRONT BRAKE ............................................ 12-13

TROUBLESHOOTING, .. " .. , .. , .... ,.. ,.. , .... ,'" .... 12-5

FORK .... " .... ,.. , .. , ........ ,.... " .. ,", .. " .. " .. ,.... , .... ,12-1 5

HANDLEBAR " ...... , .. , .. , .... , .......... , ...... , ...... ,.. , 12-6

STEERING STEM .. " .. , .. ,.. " .. , .. , ...... , ........ ," .. 12-1 8

12-1

FRONT WHEEL/BRAKE/SUSPENSION/STEERING

COMPONENT LOCATION

74 N'm (7.5

54 Ibf·ft)

20 N·m (2.0 kgf·m, 141bf.ft)

47 N·m (4.8 kgf·m, 35 Ibf·ft)

9.8 N·m (1.0 kgf·m, 7 Ibf·ftj

12-2

FRONT WHEELIBRAKE/SUSPENSION/STEERING

SERVICE INFORMATION
GENERAL

ACAUTION
Frequent inhalation of brake shoe dust, regardless of material composition could be hazardous to your
• Avoi d breathing dust particles
• Never use an air hose or brush to clean brake assemblies. Use an OSHA-approved vacuum cleaner.

heal

~ h

.

• A contaminated brake drum or shoe redu ces stopping power. Discard contaminated shoes and clean a contaminated
drum with a high quality brake degreasing agent.
• When servicing the front wheel, brake, fork or steering slem, support the motorcycle using a safety stand or hoist.

SPECIFICATIONS
ITEM
Minimum tire tread depth
Cold tire pressure
Axle runout
rim-ta-hub distance
Wheel rim runout

STANDARD

lOa kPa (1.00 kgf/c m, 15 psi)

t-Wheel
Brake

I

Fork

~
I

Radial
Axial
Brake lever free play
Brake drum 1.0.
Brake lining thickness
Spring free length

6.3 ± '.0 (0.25 ± 0.04)
10 20 (3/8 - 13116)
80 (3.1)
3.5 (0. 14)
160.8 (6.33)

Unit' mm (in)
SERV ICE UMIT
3.0 (0.12)

0.2010.00B

-

2.0 (0.08)
2.0 (0.08)

I 80.5 (3.17)
2.0 (O.OB)
I 158.3 (6.23)

I

1

TORQUE VALUES
Handlebar mounting nut
Engine stop switch holder screw
Brake lever pivot ball
Brake lever pivot nut
Spoke nipple
Front axle nut
Front brake arm nut
Fork protector batt
Steering stem nut
Steering stem top thread

20 N·m (2.0 kgf·m, 14 Ibf.ft)
2.9 N'm (0.3 kgfm, 2.2 IbHt)
2.9 N'm (0.3 kgf·m, 2.2 lbf·h)
2.9 N'm (0.3 kgfm, 2.2 IbUt)
2.0 N·m (0.2 kgf·m, 1,4lbf.ft)
47 N·m (4.B kgf·m, 35 Ibf·h)
5.9 N·m (0.6 kgf·m, 4.3 Ibf·h)
9.8 N·m (1.0 kgf·m, 7lbfh)
74 N'm (7.5 kgf·m, 54 lbf·h)
See page 12·20

U·nul

AlOe bolt: replace with a new one

12-3

FRONT WHEEL/BRAKE/SUSPENSION/STEERING
TOOLS
Spoke wrench, 4.1 x 4.5 mm

Bearing remover head, 12 mm

Bearing remover shaft
07746-0050100

07746-0050300

Driver
07749-0010000

Attachment, 32 x 35 mm
07746-0010100

07746·0040200

Pin spanner
07702-0020001

Ball race remover
07944-1150001

Attachmen t, 37 x 40 mm
07746-0010200

07701 ·0020100

or equivalent commerciallv available in U.S.A.

Steering stem driver
07946·GC40000

or Steering stem driver 07946MBOOOOO with Steering stem driver

attachment 07946-GC4000A
(U.S.A.only)

12-4

Pilot, 12 mm

FRONT WHEEL/BRAKE/SUSPENSION/STEERING

TROUBLESHOOTING
Hard steering
• Faulty or damaged steering head bearings
• Insufficient tire pressure
• Steering stem top thread too tight

Steers to one side or does not track straight
•
•
•
•
•
•
•

Bent fork
Bent axle
Wheel installed incorrectly
Faulty steering head bearings
Bent frame
Worn wheel bearing
Worn swingarm pivot components

Front wheel wobbling
•
•
•
•

Bent rim
Worn front wheel bearings
Faulty tire
Unbalanced tire and wheel

Wheel turns hard
• Faulty wheel bearings
• Bent front axle
• Brake drag
Soft suspension
• Weak fork springs
• Tire pressure too low

Stiff suspension
• Bent fork sliders
Front Suspension noisy
• Damaged or bent fork sliders
• Loose fork fasteners
Improper brake performance
• Incorrect adjustment of lever
• Contaminated brake shoes
• Worn brake shoes
• Worn brake cam
• Worn brake drum
• Improperly engaged brake arm serrations

12-5

FRONT WHEEl/BRAKE/SUSPENSION/STEERING

HANDLEBAR
REMOVAL
Remove the fuel tank breather hose from the number plate and the number plate from the steering

stem nut.
Remove the wire bands.

Remove the two screws and engine SlOp switchl
throttle housing from the handlebar.

ENGINE STOP SWITCHfTHROTTLE HOUSING

Disconnect the throttle cable and remove the throt-

tle grip.

Remove the left handlebar grip.
Remove the two nuts and handlebar.

12-6

GRtP

\

FRONT WHEEL/BRAKE/SUSPENSION/STEERING
INSTALLATION
Install the handlebar into the fork top bridge and
tighten the mounting nuts.
TORQUE: 20 N ·m (2.0 kgf·m , 14 Ibf.ft)

Clean the inside surface of the left handlebar grip
and the outside surface of the left handlebar.
Apply Honda Bond A or equivalent to the inside sur·
face of the left handlebar grip and to the outside
surface of the left handlebar.Wait 3 - 5 minutes and

~I

GRIP

=- -" I

~ '-:~

\

install the grip.
Allow the adneslve

__=~

Rotate t he grip for even application of the adhesive.

10 dry for an hour
before uSlflg

ApplV grease to the throttle grip pipe flange and
install the throttle grip onto the right handlebar.

.~

GRIP

Connect the throttle cable to the throttle grip pipe
flange.

Install the engine stop switchlthrottle housing onto
the handlebar, aligning the m ating surface with the
punch mark on the handlebar.
Tighten the forward screw first, then the rear screw.

EN GINE STO P SWITCHITHROTIlE HOUSING

TORQUE: 2.9 N 'm (0.3 kgf·m, 2.2 Ibf·h )

12-7

FRONT WHEEL/ BRAKE/ SUSPENSION / STEERING
Secure the engine stop switch wire with the wire
bands properlv.

BREATHER HOSE

Install the number plale over the steering stem nut
and insert the breather hose into the hole in the
number plate ,
Check the throttle grip operation and free play !page

3·6).

~!§PLATE

FRONT WHEEL
REMOVAL
Support the motorcycle securely using a safety
stand or a hoist.
Remove the brake cable from the cable holder on
the fork protector.
Remove the two socket bolts and fork protector.

Disconnect the brake cable from the brake arm.
Remove the axle nut, axle and front wheel.

Remove the side collar from the right side wheel
hub and the brake panel from the left side w heel

hub.

12-8

FRONT WHEElIBRAKE/SUSPENSION/STEERING
INSPECTION
Axle
Set the axle in V-blocks and measure the runout.
AClual runout is 1/2 the total indicator reading .
SERVICE LIMIT: 0.20 mm (0.008 in )

Wh eel bearing

Turn the inner race of each bearing with your finger.
The bearings should lurn smoothly and quietly.
Also check that the bearing outer race fits tightly in
the hub.
Always replace rhe

beanngs mpmrs

II

-

-:~=

;:

-=

=:

l

Remove and discard the bearings if they do not turn
smoothly. quietly. or if they fit loosely in the hub.

Wheel rim runout

Check the rim runout by placing the wheel in a turn- I

ing stand.

-

-.:=

~-­

Spin the wheel by hand, and read the runout using a
dial indicator.
Actual runout is 112 the total indica tor reading.
SERVICE LIMITS:
Radial: 2.0 mm (0.08 in)

Axial :

2.0 mm (0.08 in)

OISASSEMBLY
Remove the dusl seal from the right side wheel hub.

12-9

FRONT WHEEL/BRAKE/SUSPENSION/STEERING
Install the bearing remover head into the bearing.
From the opposite side, install the bearing remover
shah and drive the bearing out of the wheet hub.
Remove the distance coliar and drive out the other
bearing.
TOOLS:
Bearing remover head, 12 mm
Bearing remover shaft

07746·0050300
07746-0050100

ASSEMBLY
RIG I"iT WHEEL BEARING (6201 U)

DISTANCE COLLAR
DUST SEAL

LEFT WHEEL BEARING (6201U)

Pack each wheel bearing cavity with grease.
Drive in a new left bearing squarely with its sealed
side facing out.
Install the dist ance collar and drive in a new right
bearing using the same tools.
replaced wnh new TOOLS:

Never Install the old
bearmgs. Once the
bearmgs fla ve been
removed, the bearmgs musl be
OM'

12-10

Driver
Attachment, 32 x 35 mm
Pilot, 12 mm

07749-0010000
07746-0010100
07746·0040200

r
FRONT WHEEL/BRAKE/ SUSPENSION/STEERING
Wheel center a dju stment
Place the rim on the work bench.
Place the hub with the right side down and begin
lacing with new spokes.
Adjust the hub position so that the distance from
the hub left end surface to the side of rim is 6.3 ± 10
mm (0.25 t 0.04 In) as shown.

6.3 ± 1.0 mm
(0.25 ± 0.04 in)

TOOL:
Spoke wrench, 4.1 lC 4.5 mm

07701·0020100
(Equivalent corn-

merciallvavail.
able in U.S.A.)
TORQUE: 2.0 N -m (0.2 kgf -m . 1.4 Ibf.ft)

Check the rim (unout (page 12-9).
Apply grease to a new dust seal l ips. then i nstall it ~,.;
into th e right wheel hu b.

~,

......~

INSTALLAnON
Do not gel grease

Make sure any grease is cleaned off the inside of the

onto the mner sur· brake d r um and brake shoes.
face of the brake
drum keep grease
off the d/Um

Install t he brake panel into the left wheel hub.

Install the side collar into the right wheel hub.

12-11

FRONT WHEEL/BRAKE/SUSPENSION/STEERING
Install the front wheel between the fork legs while
aligning the brake panel groove with the boss on
the left fork slider.

Apply a thin layer of grease to the front aide surface.
Install the front axle from the right side.
Hold the axle and temporarily tighten the axle nut.
Install the spri ng and joint pin and connect the
brake cable.
Install the adjusting nut
Adjust the front brake lever free play (page 3-16).

With the front brake applied, pump the fork up and
down several times to seallhe axle and check brake
operation.
Tighten the axle nut to the specified torque.
TORQUE: 47 N'm (4.8 kgf·m , 35 Ibf.ft)

Install the fork protector and tighten the socket
bolts.
TORQUE: 9.8 N'm {1.0 kgf·m , 7 Ibf.ftJ
Install the brake cable into the cable holder.

12-12

--BRAKE

,
FRONT WHEELIBRAKE/SUSPENSION/STEERING

FRONT BRAKE
REMOVAL
Remove the brake panel from the front wheel (page
12-8),

INSPECTION
Measure the front brake drum I.D.
SERVICE LIMIT: 80.5 mm (3.17 in)

Measure the brake lining thickness.
SERVICE LIMIT: 2.0 mm (0.08 in)

DISASSEMBLY
Remove the spring and brake shoes.

Remove the nUl, bolt and brake arm .

Remove the wear indicator, dust seal and brake

cam .
CAM

DUST SEAL

12-13

FRONT WHEEL/BRAKE/SUSPENSION/ STEERING
ASSEMBLY

WEAR INDICATOR PLATE

BRAKE ARM

NUT

BOLTS

BRAKE CAM

SPRING

BR,,"E SHOES

Apply grease to the brake cam spindle.
Inslall the brake cam into the brake panel.

Apply oil to a new dust seal and install it onto the
brake panel.

Install the wear indicator plale onto the brake cam
by aligning its wide tooth with the w ide groove in
the brake cam

INDICATOR

~
ALIGN

12-14

FRONT WHEEL / BRAKE/SUSPENSION/ STEERING
Install the brake arm by aligning the punch marks
on the arm and brake cam.
Install a new brake arm pinch bolt and nut as shown
and tighten it to the specified torque.
TORQUE: 5.9 N 'm (0.6 kgf-m , 4.3 Ibf.ftl
NUT

Apply grease to the anchor pin and brake cam slid-

ing surfaces.
Install the brake shoes and spring as shown.
Wipe any excess grease of the brake cam and

anchor pin.

INSTALLATION
Install the front wheel (page 12-11)

FORK
DISASSEMBLY
Remove the front wheel (page 12-8),
Loosen the brake cable nul and remove the brake
cable from the fork slider.
Remove the dust seal from the fork ou ter tube by
sliding it down.
Remove the stopper ring.

Remove the fork top bolt and washer and pull the
fork slider down to remove the fork assembly.

12-15

FRONT WHEEL/BRAKE/SUSPENSION/STEERING
Drive out the spring pin, using a 4 mm pin driver.

Remove the following from the fork slider:
-

Fork springfspring holders

-

Slider piston

-

Slider guide
Back up ring
Stopper ring
Oust seal

INSPECTION
Visually inspect each part for excessive wear or
damage.

PISTON

/

SUDER GUIDE

FORK SUOER

\
DUST
SEAL
BACK-UP RING

Measure the fork spring free length.
SERVICE LIMIT: 158.3 mm (6.23 in )

12-16

<T<'P'>'" RING

FRONT WHEEL/ BRAKE/ SUSPENSION / STEERING
ASSEMBLY
BACK-UP RING

SPRING fHOLDERS

\j
~

STOPPER RING ---------....

~

DUST SEAL

FORK SUDER

OUTER TUBE

SPRING PIN

"ItJo H PISTON
SLIDER GUIDE

Install the following onto the fork slider:
-

SLIDER GUIDE

New dust seal (apply grease to the seal lips)
Stopper ring (with the chamfered side facing up)
Back up ri ng
Slider guide (apply 5 - 6 9 of grease to the slider
guide sliding surface of the fork slider)

(5 - 6g)

BACK-UP
Install the slider piston and fork spring/holders as
shown.
Align the pi n holes in the piston, fork slider and
spring holder so that t he locating pi n on the upper
sp rin g holder is facing inside of the fork slider and
drive the spring pin to secure them, using a 4 mm

NG

STOPPER RING

SPRI NG PIN

pin driver.
Be su re thaI the spring pin does not project out of
the piston outer surface.

12-17

FRONT WHEEL/BRAKE /S USPENSION/STEERING
Apply 5 - 6 9 of grease to the slider guide outer

groove.
Pack the fork spring with 14 9 of grease.
Install the fork assembly by aligning the locating pin
with the groove in the outer tube.

Instal! the fork top bolt and washer and tighten it.
Wipe any excess grease of the outer tube.

Install the stopper ring into the groove in the outer
tube properly.
Install the dust seal over the outer tube.
Wipe any excess grease of the fork slider.

Install the brake cable onto the fork slider and
secure it by tightening the cable nut.
Install the front wheel (page 12·' 1).

STEERING STEM
REMOVAL
Remove the following:
-

12-18

Number plale (page 2-5)
Handlebar (page 12·6)
Front wheel (page 12-8)
Front fender (page 2-5)
Steering stem nut and washer.
Front top bolts and washer.
Top bridge.

BACK-UP RING

FRONT WHEEL/BRAKE/SUSPENSION/STEERING
Remove the steering stem top thread using the speciallool.

PIN SPANNER

TOOL:
Pin spanner

07702·0020001

Remove the following:
-

Upper bearing inner race
Upper bearing
Steering stem
Lower bearing

STEM

BEARING REPLACEMENT
Always rep/ace the
bearings and races

as a set

Drive out the upper and lower bearing outer races
using the special tool.

TOOL:
Ball race remover

07944-1150001

Drive new upper and lower bearing outer races into
the steering head pipe using the special tool as
shown .
TOOLS:

Driver
Attachment, 37 x 40 mm

07749-0010000
07746·0010200

12-19

FRONT WHEELIBRAKE/SUSPENSION/STEERING
Temporarily install the steering stem nut onlO the
stem to prevent the threads from being damaged
when removing the lower bearing inner race from

INNER RACE/DUST SEAl1'vVASHEA

the stem.
Remove the lower bearing inner race with a chisel
o r equivalent 1001, being careful not to damage the

stem.
Remove the dust seal and washer.

-

Install the washer over the steeri ng stem.
Apply grease to a new dust seal lips and install it
over the steering stem.
Install a new lower bearing inner race using a spe~
cial tool and a hydraulic press.
TOOLS:
Steering stem driver

STEERING STEM DRIVER

07946-GC40000 or

Steering stem driver
07946·MBOOOOO with
Steering st8 m driver attachme nt
01946·GC4000A
(U.S.A. only)

INSTALLATION

~

~

~

~

~

~

~ /
l.o~

).~-

~

UPPER INNER RACE

-

-

UPPER BEARING

_ _ _ _ _ UPPER OUTER RACE

LOWER OUTER RACE

. -----

LOWER BEARING
LOWER INNER RACE

DUST SEAL

WASHER

12-20

~.t-

TOP THREAD

•

..u;;;..

:11

:IN NERfOUTER
RACES BEARINGS
DUST SEAL

FRONT WHEELIBRAKE/SUSPENSION / STEERING
Apply grease to upper and lower bearings and

races.

INNER RACE

Insert the lower bearing onto the lower bearing

race .
Insert the steering stem into the steering head pipe.
Inslall upper bearing. inner race and top thread.

Hold the sleering stem and tighten the stem top
thread to the initial torque.
TORQUE: 25 N ·m (2.5 kgf·m , 18 Ibf.ft)

Move the steering stem right and left, lock-te·lock
several times to seat the bearings.

loosen the top thread .
Retighten the top thread to the specified torque.

TORQUE: 2.9 N'm (0.3 kgf·m, 2.2 Ibf.ftl

Install the top bridge.

Install the slem nut and fork top bolts with the
washers and tighten them.
TORQUE: 74 N ·m (7.5 kgf·m , 54 Ibf.ft)
Make sure that the steering stem moves smoothly ,
without play or binding.
Install the following:
-

Front fender (page 2-5)
Front wheel (page 12-11)
Handlebar (page 12-7)
Number plate (page 2-5)

12-21

13. REAR WHEEL/BRAKE/SUSPENSION

COMPONENT LOCATION ........................... 13-2

REAR BRAKE ··············· ·······························13-10

SERVICE INFORMATION ··········· ······· ·········· 13-3

SHOCK ABSORBER ···································· 13-12

TROUBLESHOOTING .................................. 13-4

SWINGARM ················································ 13-14

REAR WHEEL ··············································· 13-5

BRAKE PEDAL ············································ 13-15

13-1

REAR WHEEL/BRAKE/SUSPENSION

COMPONENT LOCATION
34 N·m

J,~o/'-"

47 N' m (4.8 kgf·m, 35 Ibf.fl)

13-2

kgf·m , 25 IbUt)

34 N·m (3.5 kgf·m,

251bUt)

39 N'm (4.0 kgf·m, 291bHt)

REAR WHEEL/BRAKE/SUSPENSION

SERVICE INFORMATION
GENERAL

Frequent inhalation of brake shoe dust, regardless of material composition could be hazardous to your health .
• Avoid breathing dust particles.
• Never use an air hose or brush to clean brake assemblies. Use an OSHA-approved vacuum cleaner.
• A contaminated brake drum or shoe reduces stopping power. Discard contaminated shoes and clean a contaminated
drum with a high quality brake degreasing agent.
• When servicing the rear wheel, support the motorcycle using a safety stand or hoist.
• Use genuine Honda replacement bolts and nuts for all suspension pivots and m ounting points.

SPECIFICATIONS

TORQUE VALUES
Spoke nipple
Rear axle nut
Dri ven sprocket nut
Rear brake arm nut

Swingarm pivot nut
Shock absorber mounting nut
Drive chain slider nut

2.0 N'm (0.2 kgf·m , 1.4Ibf.ft)
47 N·m (4.8 kgf·m . 35 Ibf·h )
32 N'm (3.3 kgf.m. 24 Ibf.ft)
5.9 N·m (0.6 kgf·m . 4.3 Ibf.ft)
39 N'm (4.0 kgf·m . 29 IbHt)
34 N'm (3.5 kgf·m. 25 fbf·h)
12 N 'm (1.2 kgf·m, 9lbf.ftl

U-nut
U-nut
ALOe bolt: replace with a new one
Apply grease to the seating surfaceJU-nut
U-nut
U-nut

13-3

REAR WHEEL/BRAKE/SUSPENSION
TOOLS
Spoke wrench, 4.1 x 4.5 mm

01701·0020100

Bearing remover shaft
07746-0050100

07746·0050300

Bearing remover head, 12 mm

Attachment, 32 x 35 mm
07746-0010100

07746·0040200

or equivalent commercially availbi. In U.S.A.

f

Driver
07749-0010000

~-'
TROUBLESHOOTING
Soft suspensio n
• Weak shock absorber spring
• Qilleakage from damper unit
• Tire pressure too low
Stiff suspension
• Bent damper rod
• Damaged swingarm pivot bushings
• Bent swingarm pivot
• Tire pressure lao high

Steers t o one side or does not track straig ht
• Bent fear axle
• Axle alignment/chain adjustment nol equal on both sides
Rear wheel w obbling
• Bent rim
• Worn fear wheel bearings
• Faulty tire
• Unbalanced tire and wheel
• Tire pressure 100 low
• Faulty swingarm pivot bushings

13-4

Pilot, 12 mm

REAR WHEEL/BRAKE / SUSPENSION

REAR WHEEL
REMOVAL
Support the motorcycle securely using a hoist or ~!\UT
equivalent and raise the rear wheel off the ground. •

r

-"':JEi;;;;j(E'f,olo";;iPiiii:iG1

Remove the rear brake adjusting nut and disconnect
the rear brake rod from the brake arm, and remove
the joint pin and spring.

loosen the drive chain adjuster lock nuts and
adjusting nuts.
Remove the axle nut and left chain adjuster.
Push the rear wheel forward and derail the drive
chain from the driven sprocket.
Remove the axle from the right side and remove the
fear wheel.

Remove the left side collar from the left wheel hub.

Remove the brake panel from the right wheel hub.

13-5

REAR WHEEL/BRAKE/SUSPENSION
INSPECTION
Axle
Place the axle in V-blocks and measure the runout.
Actual runout is 1/2 the total indicator reading .
SERVICE LIMIT: 0.20 mm (0.008 in)

Wheel bearing
Turn the inner race of each bearing with your finger. , -- - -- - - - - - - -- - - -- ---,
Bearings should turn smoothly and quietly.
Also check that the bearing outer race fils tightly in
the hub.
Replace rhe w heel Remove and discard the bearings if the races do not
beanngs In pairS. turn smoothly and quietly. or if they fit loosety in the

hub.

Wheel rim runout

Check the rim runout by placing the wheel in a turning stand.
Spin the wheel slowly and read the runc ut using 8

1---------:::==:::::----- -1

dial indicato r.
Actual runcut is 112 the total indicator reading.
SERVICE LIMITS: Radial: 2.0 mm (0.08 in)
A xial: 2.0 mm (0.08 in )

Driven sprock et
Check the condition of the final driven sprocket , -- - - -- - - - - - - - - - - - - - - ,
teeth.
Replace the sprocket if worn o r damaged.
• If the final driven sprocket requires replacement,
inspect the drive chain and drive sprocket .
• Never install a new drive chain on a worn
sprocket or a worn chain on new sprockets. 80th
chain and sprockets must be in good conditio n
or the replacement chain or sprocket will wear
rapidlv.

13-6

~

~

.."",,,,,r:

NORMAL

REAR WHEEl/BRAKE/SUSPENSION
DISASSEMBLY
Remove the nut s, bolts and driven sprocket.
Remove the left dust seal.

W heel bearing remova l
Install the bearing remover head into the bearing.
From the opposite side install the bearing remover
shaft and drive the bearing out of the wheel hub.
Remove the distance collar and drive OUI the other
bearing.
TOOLS:
Bearing remover head, 12 mm
Bearing rem over shaft

07746·0050300
07746-0050100

ASSEMBLY
DISTANCE COLLAR
BEARING (620 1 U)

BEARING (6201 U)

DUST SEAL ....-..

32 N'm (3.3 kgf·m, 24 Ibf.ft)

DRIVEN SPROCKET

'BOLTS

13-7

REAR WHEEL/BRAKE/SUSPENSION
Wheel be aring installation
Pack each wheel bearing cavity with grease.
beatings, once the Drive in a new right bearing squarelV with the
beBrmgs ha .... been sealed side facing up using the special tools as
removed, rhe bear- shown.
mgmus r be
TOOLS:
replscea with new

Never mSf~J/

the old

ones. Oliver
Attachment, 32
Pilot, 12 mm

07749·0010000

II

35 mm

07746·0010100

01746·0040200

: ~:

Install the distance coliar and drive in a new leh

bearing using the same tools.

:'~i

Wheel center adjustment
Place the rim on the work bench.
Place the hub with the left side down and begin lacing with new spokes.
Adjust the hub position so that the distance from
the hub right end surface to the side of rim is 25 1: 10
mm (1.0 ± 0.04 in) as shown.
TOOL:
Spoke wrench, 4.1

x 4.5 mm

'&.. .tff
~

25 ± 1.0 mm
(1.0±0.04in)

/

07701 ·0020100
(Equivalent commerciallyavallable in U.S.A .)

TORQUE: 2.0 N 'm (0.2 kgf-m , 1.4Ibf.ft)
Check the rim runout (page 13-6),
Apply grease to a new dust seal lips and install il

into the left wheel hub.
Install the driven sprocket, bolts and nuts and
tighten the nuts to the specified torque.
TORQUE: 32 N·m (3.3 kgf·m , 24 Ibf·h)

13-8

:~

r=~

••

:;i@~

i~.=

~

REAR WHEEL/ BRAKE/SUSPENSION
INSTALLATION
Install the left side collar into the left wheel hub.

Install the brake panel into the right wheel hub.

Place the rear wheel into the swing arm by aligning
the brake panel groove with the swing arm boss.

Install the drive chain over the driven sprocket.
Apply thin layer of grease to the axle.
Install the axle with the right drive chain adjuster
from the right side.
Install the left drive chain adjuster and axle nut.

13-9

REAR WHEEL/BRAKE/SUSPENSION
Install the spring onto the brake rod and the joint
pin into the brake arm.
Connect the brake rod and install the adjusting nut.
Adjust the drive chain slack (page 3-13).
Tighten the axle nut t o the specified torque.
TORQUE: 47 N'm (4.8 kgf·m . 35 IbUt)

REAR BRAKE
INSPECTION
Remove the brake panel from the rear wheel (page
13-5).
Measure the rear brake drum 1.0.

SERVICE LIMIT: 80.5 mm (3.17 in )

Measure the brake lining thickness.

SERVICE LIMIT: 2.0 mm (O.OS in)

DISASSEMBLY
Remove the brake shoes and spring.

13-10

SHOES

SPRING

REAR WHEEL/BRAKE/SUSPENSION
Remove the brake arm cover if necessary.

CAM

Remove the nut, bolt and brake arm.

NUT

Remove the indicator plate, dust seal and brake

cam.

ARM

ASSEMBLY
BRAKE ARM
WEAR INDICATOR PLATE

BRAKE SHOES

\

tCc::;:;:::!llJ!>-"5.9 N·m (0.6 kgf·m , 4.3 Ibf.ft)

Apply grease to the brake cam spindle.
Install the brake cam into the brake panel.

13-11

REAR WHEEL/BRAKE/SUSPENSION
Apply oil to a new dust seal and install it onto the
brake panel.
Install the wear indicator plate onto the brake cam
by aligni ng its wide tooth with the wide groove in
the brake cam .

Install the brake arm by aligning the punch marks
on the arm and brake cam.
Install a new brake arm pinch bolt and nut as shown
and tighten it to the specified torque.
TORQUE: 5.9 N'm (0.6 kgf -m , 4.3 IbUt)
Install the brake arm cover onto the arm.

Assemble the brake shoes and spring as shown and
install them onto the brake panel.
Wipe any excess grease off the brake cam and
anchor pin.
Install the rear wheel (page 13-9).

SHOCK ABSORBER
REMOVAL
Support the motorcycle securely using a hoist or
equivalent and raise the rear wheel off the ground.
Remove the seat (page 2-3).
Remove the shock absorber lower mounting nut
and bolt.

13-12

SPRING

REAR WHEEL/BRAKE/SUSPENSION
Remove the upper mounting nut and bolt and the
shock absorber.

INSPECTION
Visually inspect the for following:
-

DAIMP"R ROD

SPRING

Spring for fatigue or damage.
Damper rod for bend or damage.
Damper unit for deformation or oil leaks.
Bump rubber for wear or damage.
Mounting bushings for damage.

Replace the shock absorber assembly if necessary.

INSTALLATION
Install the shock absorber into the frame and
swing arm.
Install the upper and lower mounting bolts from the
left side.

SHOCK ABSORBER

Install the nuts and tighten them to the specified
torque .
TORQUE: 34 N 'm (3.5 kgf·m , 25 Ibf.ft )

13-13

REAR WHEEL/BRAKE/SUSPENSION

SWINGARM
REMOVAL
Remove the drive chain (page 3-14).
Remove the reaf wheel (page 13-5),
Remove the boils and drive chain cover.
Remove the bolts and drive chain guard.

Remove the shock absorber lower mounting nut

and bolt.

Remove

the

swingarm

pivot

nut,

bolt

and

swingarm.

Remove the nut and bolt and the drive chain slider.

NUT/BOLT

CHAIN SUI).R

INSPECTION
Inspect the swingarm for wear or damage.
Inspect the pivot bushings for wear or damage.

13-14

REAR WHEEL/BRAKE/SUSPENSION
INSTALLATION
Install the drive chain slider and tighten the nut t o
the specified torque.

TORQUE: 12 N 'm (1 .2 kgf·m, 9 Ibf.ft)

CHAIN SLIDER
Install the swingarm over the frame, then install the
pivot bolt from the right side and the shock
absorber lower mounting bolt from the left side.
Apply grease to the seating surface of the swing arm
pivot nut.
Install and tighten the swing arm pivot nul to the
specified torque.

TORQUE: 39 N 'm 14.0 kgf·m, 29 IbUtl
Tighten the shock absorber lower mounting nut to
the specified torque.

TORQUE: 34 N 'm (3 .5 kgf'm,25 Ibf.ftJ

Install the drive chain guard and tighten the bolts.
Install the drive chain cover and lighten the bolts.
Install the rear wheel (page 13-9),
Install the d rive chain (page 3· 15) .

BRAKE PEDAL
REMOVAL
Remove the rear brake adjusting nut and disconnect
the rear brake rod from the brake ar m, and remove
the joint pin and spring.

13-15

REAR WHEEL/BRAKE/SUSPENSION
Remove the cotter pin, joint pin and brake rod.

Unhook the brake pedal return spring from the
brake pedal.
Remove the cotter pin, washer and brake pedal.

INSTALLATION
Apply grease to the pivot surface and install the ...- -...,.-,
brake pedal.

Install the washer and a new cotter pin to secure the
brake pedal.
Install the return spring as shown.

13-16

REAR WHEEL/BRAKE/SUSPENSION
Connect the brake rod to the pedal with the joint pin

and secure it with a new cotter pin.

Install the spring onto the brake rod and the joint
pin into the brake arm.
Install the rod to the joint pin with the adjusting nut.

Adjust the brake pedal free play (page 3-16).

13-17

14. IGNITION SYSTEM

SYSTEM DIAGRAM "····"·"·,, .. ,,",,·,, .. ,,,,· .. ,,· 14-2

IGNITION CONTROL MODULE ··················· 14-8

SERVICE INFORMATION ······················· ·· ··· 14-3

ENGINE STOP SWITCH ······························· 14-8

TROUBLESHOOTING .................................. 14-4

IGNITION SWITCH ····· ······ ······················· ····· 14-9

IGNITION SYSTEM INSPECTION .. ............. 14-5

IGNITION TIMING ······································ 14-10

IGNITION COIL· ············································ 14-7

14-1

IGNITION SYSTEM

SYSTEM DIAGRAM
ENGINE STOP SWITCH

IGNITION CONTROL

MODULE (leM)
IGNITION COIL

IGNITION SWITCH

SPARK PLUG
ENGINE STOP

EXCITER COIL

IGNITION PULSE GENERATOR

IGNITION

SWITCH

SWITCH

[HJ

[HJ

BIIW G

BIIW G

W l~

:;~
BIIW

BIIR

n

G

BIIY

BIIY G

..
,o
..

,

G

II111Y

SWITCH CONTINUITY

ENGINE

STOP

SWITCH

1"'-

OG ,

.... .. •
"'''

w Ie> fa

14-2

BI
Y

BLACK
YELLOW

Bioi

BLUE

IGNmON
SWITCH

1"'-

OG ,

...

IGNITION
CO IL

IGNITION

CONTROL

MODULE

"""10 f<J

"'"
""'

o
SPARK
PLUG

G

GREEN

R
W

RED
WHITE

IGNITION
PULSE

GENERATOR

ALTERNATOR

IGNITION SYSTEM

SERVICE INFORMATION
GENERAL
• When servicing the ignition system, always follow the steps in the troubleshooting sequence on page 14-4.
• The COl ignition system uses an electrically controlled ignition timing system. No adjust ments can be made to the igni-

tion timing .
• The leM may be damaged if dropped. Also if the connector is disconnected when current is flowing, the excessive voltage may damage the module.
• A faulty ignition system is often related to poor connections. Check those connections before proceeding.
• Use spark plug of the correct heat range. Using spark plug with an incorrect heal range can damage the engine.
• For alternator and ignition pulse generator removal and installation, See page 10-3.

SPECIFICATION

"

i i

,;

TORQUE VALUES
Ignition coil mounting bolt

5.9 N·m (0.6 kgf·m, 4.3 Ibf.ft)

TOOLS
Peak voltage adaptor with commercially available digital multi meter
(impedance 10 MUlOCV minimum)

Ignition Mate peak voltage tester
MTP07-0286 (U.S.A. only)

07HGJ-0020100 (not available in
U.S.A.)

14-3

IGNITION SYSTEM

TROUBLESHOOTING
• Inspect the following before diagnosing the system.
- Faulty spark plug
- Loose spark plug cap or spark plug wire connections
- Water got into the spark plug cap (leaking the ignition coil secondary voltage)
No sp ark at spark pl ug

Ignition coil
primary

Unus ual condition
Low peak voltage.

voltage

No peak voltage.

Peak voltage is normar, but no spark
jumps at plug.
Exciter coil

Low peak voltage.

No peak voltage.
Ignition pulse
generator

Low peak voltage.

No peak voltage.

14-4

Probable cause (check in numerical ord er)

1. Incorrect peak voltage adaptor connections (System is
normal if measured voltage is over the specifications
with reverse connections).
2. The mullimeter impedance is too low; 10 MWDCV.
3. Cranking speed is too low (Operating force of the kickstarter is weak.)
4. The sampling timing of the tester and measured pulse
were not synchronized. (System is normal if measured
voltage is over the standard voltage at least once.)
5. Poorly connected connectors or an open circuit in ignition system.
6. Faulty exciter coil (Measure peak voltage).
7. Faulty ignition coil.
8. Faulty ICM (in case when above No.1 - 7 are normal).
1- Incorrect peak voltage adaptor connections (System is
normal if measured vol t age is over the specifications
with reverse connections).
2. Short circuit in ignition switch wire or engine stop
switch wire (Black/white).
3. Faulty ignition switch or engine stop switch.
4. Loose or poorly connected ICM connectors.
5. Open circuit or poor connection in ground wire (Green)
of the ICM.
6. Faulty peak voltage adaptor.
7. Faulty exciter coil. (Measure peak voltage).
8. Faulty ignition pulse generator (Measure peak voltage).
9. Faulty ICM (in case when above NO.1 - 8 are normal).
1- Faulty spark plug or leaking ignition coil secondary current ampere.
2. Faulty ignition coil .
1- The multimeter impedance is too low; 10 MruDCV.
2. Cranking speed is too slow (Operating force of the kickstarter is weak.)
3. The sampli ng timing of the tester and measured pulse
were not synchronized. (System is normal if measured
vol t age is over the standard voltage at least once.)
4. Faulty exciter coil (in case when above No.1 - 3 are
normal).
1. Faulty peak voltage adaptor.
2. Faulty exciter coil.
1- The multimeter impedance is too low; 10 MQ/DCV.
2. Cranking speed is too slow (Operating force of the kickstarter is weak.)
3. The sampling timing of the tester and measured pulse
were not synchronized (System is normal if measured
voltage is over the standard voltage at least once).
4. Faulty ignition pulse generator (in case when above
NO.1 - 3 are normal).
1- Faulty peak voltage adaptor.
2. Faulty ignition pulse generator.

IGNITION SYSTEM

IGNITION SYSTEM INSPECTION
• If there is no spark at plug, check all connections
for loese o r poor contact before measu r ing each
peak voltage.

DIGITA L MULT1METER

\

• Use recommended digital multi meter o r commercially available digital multimeter with an
impedance of 10 MruDCV minimum.
• The display value differs depending upon the
internal impedance of the m u lti met er.
• If using peak voltage tester (U.S.A. only), follow
the manufacturer's operating instructions.

c::::::J.

o

Connect the peak vol t age adaptor to the digital
multimeter, o r use the peak volta g e tester (U.S.A.
only).

PEAK VOLTAGE ADAPTOR

TOOLS:

Peak volta ge tester

MTP07-0286
(U.S.A . only) or
Peak voltage adaptor
07HGJ-0020100
(Not available in
U.S.A .)
with commercia lly available digital multimeter
(impedance 10 MQ/DCV minimum)

IGNITION COIL PRIMARY PEAK VOLTAGE
• Check all system connections before inspection.
If the system is disconnected, incorrect peak voltage might be measured.
• Check cylinder compression and check that the
spark plug i s installed correctly.

" KCN
C:O
c-W
C:N
c-G
=-=OC
OCD
:-:SCpC
ACR
CK
-:c:pCLC
UCG
: :----------,

Disconnect the spark plug cap from the spa rk plug.
Connect a known good spark plug to the spark plug
cap and ground the spark plug to the cylinder head
as done in a spark test.

With the ignition coil primary wire connected, connect the peak voltage adaptor or peak voltage tester
to probes to the ignition coil primary wire terminal
and ground.
CONNECTION:
Black/ yellow tenninal (-) - Body ground (+)

~=_

:'~

If

='GNTOC

=~

[QJ

••

Turn the ignition switch ON and engine stop switch
to "RUN".
Shift the transmission into neutral.
Crank the engine with kickstarter and read ignition
coil primary peak voltage.

1+)

PEAK VOLTAGE: 100 V minimum
If the peak vol tage is abnormal, follow the checks
described in the t roubleshooting chart (page 14-4).

14-5

IGNITION SYSTEM
IGNITION PULSE GENERATOR PEAK
VOLTAGE
• Check cylinder compression and check that the
spark plug is installed correctly.
~-

-

-,

Remove the seat assembly (page 2-3).
Disconnect the 4P connector from the leM.
Connect the pea k voltage adaptor or peak voltage
tester probes to t he connector t erminals of the wire
harness side.

TOOLS:

Peak vottage tester
Peak voltage adaptor

MTP07-0286
(U.S.A. only) or
07HGJ-0020100
(Not available in
U.S.A .)

leM CONNECTOR

with commen:ially available digital multimete r
(impedance 10 MlliDCV minimum)
CONNECTION :
Blue/yellow terminal 1+1 - Green

I-l

Shift the transmission into neutral.
Crank the engine with the kickst arter and read the

peak voliage.
PEAK VOLTAGE: 0.7 V minimum

If the peak voltage measured at leM connector is
abnormal, measure the peak volt age at the pulse
generator connector.
Disconnect the ignition pulse generator connector
(Blue/yellow) and connect the peak voltage adaptor
or tester probes to the connector terminal of the
ignition pulse generator side and ground.
In the same manner as at the leM connector, mea~
sure the peak voltage and compare it to the voltage
measured at the leM connector.

• If the peak voltage measured at the leM is abnormal and the one measured at the ignition pulse
generator is normal, the w ire harness has an
open circuit, or loose connection.
• If both peak voltages are abnormal, fo llow the
checks described in the troubleshooting chart
(page 14-4).

14-6

riGNrnclNPlJUiEZ.];iffi;;:;miCmmECTc;;-l
IGNITION PULSE GENERATOR

IGNITION SYSTEM
ALTERNATOR EXCITER COIL PEAK
VOLTAGE
• Check cylinder compression and check that the
spa rk pl ug is installed correctly.
Remove the seat assembly (page 2-3).
Disconnect the 4P and 2P connectors f rom the leM.
Connect t he peak voltage adaptor or peak voltage
tester probes to the connector terminals of the wire
harness side.

TOOLS :

Peak voltage tester
Peak voltage adaptor

MTP07·0286
(U.S.A. only) or
07HGJ-0020100
(Not available in
U.S.A.)

with commercially available digital multi meter
(impedance 10 Mn/ DCV minimum)

CONNECTION:

Black/ red tanninal (+) - Green H
Shift the transmission into neutral.
Crank the engine with kickstarter and read the peak
voltage.

PEAK VOLTAGE: 100 V minimum
abnormal,
peak voltage
the alternaIf the peakmeasure
voltage the
measured
at leMatconnector
is
tor exciter coil connector.

r -~=:t'

l

Disconnect the alternator exciter coil connector
(Black/red) and connect the peak voltage adaptor or
tester probes to the connector terminal of the
exciter coil side and ground.
In the same manner as at the [eM connector, measure t he peak voltage and compare it to the voltage
measured at the leM connector.
• If the peak voltage measu red at the leM is abnormal and the one measured at the alternator
exciter coil is normal, the wire harness has an
open ci rcuit, or loose connection .
• If both peak voltages are abnormal, follow the L _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _---'
checks described in the troubleshooting chart
(page 14-4),

IGNITION COIL
REMOVAlIlNSTALLATION
Disconnect the spa rk plug cap from the plug.
Disconnect the primary wires from the ignition coil.
Remove the bolt and ignition coil.
Installation is in the reverse order of removal.
Tighten the ignition coil mounting bolt to the specified torque.
TORQUE: 5.9 N·m (0.6 kgf·m, 4.3 IbUt)

14-7

IGNITION SYSTEM

IGNITION CONTROL MODULE
REMOVALIINSTALLATION
Remove the seat assembly (page 2-3).

Disconnect the Ignition Control Module (teM) 4P
and 2P connectors.
Remove the leM from the frame.
Installation is in the reverse order of removal.

ENGINE STOP SWITCH
INSPECTION
Disconnect the engine slop switch connectors.
Check for continuity between the terminals.

'-.::-:::=:-::,,;;;;;;;;;;;;,,;;;;:::-----------'

There should be no continuity when the engine SlOp
switch is in the · OFF" position and there should be ENGINE STOP SWITCH
continuity when the engine stop switch is in the ~
"RUN- position.
~

14-8

IGNITION SYSTEM

IGNITION SWITCH
INSPECTION
Disconnect the ignition switch conn ectors.

CONNECTORS

Check for continuity at the connect ors on the igni-

tion switch side.
There should be no continuity when the ignilion
switch is in the "OW posi tion and continui ty when
the ignition switch is in the "OFF" position.

REMOVAL/INSTALLATION
Disconnect t he ignition swit ch connectors.

Release the tabs on the ignition switch body and
remove the ignition switch.

At instal/arIOn, align
the gUide on the

Installation is in the reverse order of removal.

19m/ron SWITdI and

groove on the
frame.

14-9

IGNITION SYSTEM

IGNITION TIMING
Warm up the engine.
Stop the engine and remove the left crankcase
cover (page 10-4).
Read the mstruc1/0ns for tlmmg light

operation.

Connect the timing light to the spark plug wi re.
Start the engine and let it idle.

IDLE SPEED: 1,700 ± 100 rpm

The ignition timing is correct if the "F" mark on flywheel aligns with the index notch on the left crank-

case.
Increase the engine speed by turning the throttle
stop screw and make sure the "F" mark begins to
move clockwise.
Install the left crankcase cover (page 10-8).

14-10

15. WIRING DIAGRAM

WIRING DIAGRAM ...................................... 15·2

E

15-1

.....
(J1

:E :E

,

N

ENGINE STOP
SWITCH

~

:xl :!!
Z

-2

IGNITION
SWITCH

~

ovw G

OVW

-l>C

C)

G

I

:xl

l>

s:

OW

OIV
E IR

or"

G

CONTROL

E

IG

E

PLUG

OFF
G

BlACK
YELLOW
BLUE

COLOR BWI

~

01lA

n I"

SPARK

OlaR 8VW

01lA

o

RUN

BI
Y
Bu

IGNITION
COIL

IGNITION

IGNITION
SWITCH

STOP
SWITCH

IG

0""
MODULE

ENGINE

01

~

o'iv

~f-n
SWITCH CONTINUITY

IGNITION
PULSE
GENERATOR

ALTERNATOR

G

G

GREEN

R
W

RED
WHITE

Cl

C) 0
~

0030Z-GEL-7000

Cl

'"l>s:

16. TROUBLESHOOTING

ENGINE DDES NDT START OR
IS HARD TO START··········· ·· ······················ ·· 16-2

POOR PERFORMANCE AT LOW
AND IDLE SPEED··················· ······················· 16-5

ENGINE LACKS POWER ............................. 16-3

POOR PERFORMANCE AT HIGH SPEED ···· 16-5
POOR HANDLlNG ········································· 16-6

16-1

TROUBLESHOOTING

ENGINE DOES NOT START OR IS HARD TO START
1. Carburetor Inspection
Check the fue l flow to carburetor.
Is fuel reaching the carburetor?
NO

_ . Clogged fuel tine and strainer
• Clogged fuel tank breather hose

YES

- GO TO STEP 2.

2. Spark Tes t
Perform a spark test.
Is there a good spark?
NO

_ .
•
•
•
•
•
•

Faulty spark plug
Fouled spark plug
Faulty ignition control module
Broken or shorted spark plug wire
Faulty igniting pulse generator
Faulty engine stop switch or ignition switch
Loose or disconnected ignition system wires

YES

- GO TO STEP 3.

3. Sparic Plug Inspection
Remove and inspect spark plug.
Is the spark plug in good condition ?
NO

• Flooded carburetor
• Choke val ve closed

• Air cleaner dirty
YES

- GO TO STEP 4.

4. Engine Start Condition

Start by following the normal procedu re.

Does the engine start but then stop?
YES

- .
•
•
•
•

Improper choke operation
Ca rburetor incorrectly adjusted
Intake pipe leaking
improper ignition timing (faulty ignition coil or ignition pulse generat or)
Fuel contaminated

NO

- GO TO STEP 5.

5. Cylinder Compression Inspection

Test cylinder compression .
Is the compression normal?
NO

16-2

_ .
•
•
•
•
•

Valve clearance too small
Valve stuck open
Worn cylinder and piston ring
Damaged cylinder head gasket
Seized valve
Improper valve timing

TROUBLESHOOTING

ENGINE LACKS POWER
1. Drive Train Inspection
Raise wheel off the ground and spin by hand.
Does the wheel spin freelr ?

NO

_ . Brake dragging
• Worn or damaged w heel bearings

YES

- GO TO STEP 2.

2. Tire Pressure Inspection
Check the tire pressure.

Is the tire pressure correct?
NO

_ . Faulty tire valve
• Punctured tire

YES

- GO TO STEP 3.

3. Clutch Inspection
Accelerate rapidly from low to second.
Does the engine speed change Bccordingl y when clutch is released?

NO

_ . Clutch slipping
•
•
•
•

YES

Worn clutch d iscs/plates
Warped clu t ch discs/plates
Weak clutch spring
Additive in engine oi l

- GO TO ST EP 4.

4. Engine Performance Inspection
Accelerate lightly.

Does the engine speed increase?
NO

_ .
•
•
•
•

Choke valve closed
Clogged air cleaner
Restricted fuel flow
Clogged muffler
Pinched fuel tank breather hose

YES

- GO TO STEP 5.

5. Ignition Timing In spection
Check the ignition timing.
Is th e ignition timing normal?

NO

_ . Faulty ignition control modu le
• Faulty ignition pulse generator

YES

- GO TO STEP 6.

6. Cylinder Compression Inspection
Test cylinder compression.
Is the compression normal?

NO

_ .
•
•
•
•

Valve clearance too small
Worn cylinder and piston ring
Leaking head gasket
Seized valve
Improper valve timi ng

YES

- GO TO STEP 7.

7. Carburetor Inspection
Check the carburetor for clogs.
Is the carburetor clogged?

YES

- Ca rbur et or nOI serviced frequently enough

NO

- GO TO STEP 8.

16-3

TROUBLESHOOTING
8. Spark Plug Inspection

Remove and inspect the spark plug.

Is the spark plug in good condition?
NO

_ . Plug not serviced frequently enough
• Incorrect spark plug heat range

YES

- GO TO STEP 9.

9. Engine Oillnspeetion
Check the oil level and condition.

Is the engine oil in good condition?
NO

_ . Oil level too high
• Oil level too low
• Contaminated oil

YES

- GO TO STEP 10.

10. lubrication Inspection
Remove cylinder head cover and inspect lubrication.

Is the valve train lubricated properly?

NO

_ . Clogged oil passage

• Clogged oil control orifice
YES

- GOTDSTEP1' .

11 . Over Heating Inspection

Check for engine over heating.

Is the engine over heating?
YES

_ .
•
•
•
•

Excessive carbon build-up in combustion chamber
Use of poor quality fuel
Clutch slipping
lean fu el mixture
Wrong type of fue l

NO

- GOTO STEP 12.

12. Engine Knocking Inspection
Accelerate or run at high speed.

Does the engine knock?
YES

16-4

_.
•
•
•
•

Worn piston and cylinder
Wrong type of fuel
Excessive carbon build-up in com bustion chamber
Ignition timing too advanced (faulty ignition contro l module)
lean fuel mixtu re

TROUBLESHOOTING

POOR PERFORMANCE AT LOW AND IDLE SPEED
1. Carburetor Air Screw Inspection
Check the carbureto r ai r screw adjustment.

Is the air screw correct?
NO

- (page 5- ' 3)

YES

- GO TO STEP 2.

2 . Intake Mantfold leaking Inspection

Check for leaks in the intake Manifold.
Is there Isaking?

YES

_ . loose carburetor mounting bolts

NO

- GO TO STEP 3.

• Damaged insulator

3. Spark Test
Perform a spark t est.

Is there a good spark?
NO

_ .
•
•
•
•
•
•

Faulty or fouled spark plug
Faulty ignition con trol module
Faulty ignition coil
Broken or shorted spark plug wire
Faulty engine stop switch or ignition switch
Faulty ignition pu lse generator
Loose or disconnected ignition system wires

YES

- GO TO STEP 4.

4. Ignition Timing Inspection
Check th e ignition timing .

Is the Ignition timing normal?
NO

- Improper ignition t iming (Faulty ignition control module)

POOR PERFORMANCE AT HIGH SPEED
1. Fuel line Inspection
Disconnect the fuel hose at the carburetor.
Does the fuel flow freely?
NO

_ .
•
•
•

Clogged fuel line
Clogged fuel tank breather hose
Faulty fuel valve
Clogged fue l st rainer

YES

- GO TO STEP 2.

2. Carburetor Inspection
Remove the carburetor and check for clogged jets.

Are the jets clogged?
YES

- Clean

NO

- GO TO STEP 3.

3 . Valve Timing Inspection
Check the valve timing.
Is the lIal1l8 timing correct?
NO

- Cam sprocket not installed properly

YES

- GO TO STEP 5.

4. Ignition Timing Inspection
Check the ignition timing.

16-5

TROUBLESHOOTING
Is the ignition timing normal?
NO

_. Faulty ignition control module

• Faulty ignition pulse generator
YES

- GO TO STEP 5.

5. Valve Spring Inspection
Check the valve springs.
15 the valve spring f,ee length normal?
NO

- Faulty spring

YES

- Not weak

POOR HANDLING
Steering is heavy
• Steering stem adjusting nut 100 tight
• Damaged steering head bearing s
Either wheel is wobbling
• ExcessivB wheel bearing play
• Bent rim
• Improper installed wheel hub
• Swingarm pivot bearing excessively worn
• Bent fram e

The motorcycle pulls to one side
•
•
•
•

Faulty shock absorber
Front and rear wheel not aligned
Bent fork
Bent swingarm

• Bent axle

16·6

,

17. INDEX
AIR CLEANER ............... ... .................................... ············ 3·7
AIR CLEANER HOUSING .. ..... ................ ............ ............. 5-5
AIR SCREW ADJUSTMENT··· ···· ·· ······························ ,-,5·13
AL TERNATOR/CAM CHAIN TENSIONEA
SPECIFICATIONS ...................................................... ······1-7
BRAKE PEDAL ····························································· 13-15
BRAKE SHOE WEAR ...... ... ............................................ 3-15
BRAKE SYSTEM .......... .................................................. 3·16
CABLE & HARNESS ROUTING ····················· ··············· 1-14
CAM CHAIN TENSIONER ······ .. ·.. ···· .... ····· .. ············ ...... · 10-6
CAMSHAFT INSTALLATION ..................... .. ...... .... .. ..... 7· 18
CAMSHAFT REMOVAL .... ····· .... ···· .. ······· .... ·· .... ············· .. 7-6
CARBURETOR ASSEMBLy .. · .. · ................ · ...... ............ ·.. 5-9
CARBURETOR DISASSEMBLy ·· ··.. ······· ........ ·.. ··········· .. · 5-7
CARBURETOR INSTALLATION .......................
···· · 5-11
CARBURETOR REMOVAL .............................. ................ 5-5
CLUTCH ............................ ............................................... 9-6
CLUTCH SPECiFiCATIONS ...................... ·........ · .... · ........ 1-7
CLUTCH SYSTEM .... ........ .. ... ................. .... .. ................. 3-17
COMPONENT LOCATION
ALTERNATOR/CAM CHAIN TENSIONER .. ............. 10-2
CLUTCH/G EARSHIFT LINKAGE ................................. 9-2
CRANKSHAFTfTRANSMISSION .. · .. ············· .... ··.... ·· 11 -2
CYLINDER HEADNALVES ......................................... 7-2
CYLINDER/PISTON ..................................................... 8-2
ENGINE REMOVAUINSTALLATION
.... ...... ·.. ·.... ·6·2
FRONT WHEEUBRAKEISUSPENSION/
STEERING ...................... ... .. .............................. ....... 12-2
FUEL SYSTEM ..... ......
...... ... .......
.. ............ · .. ·5-2
REAR WHEEUBRAKEISUSPENSION ...................... 13-2
CRANKCASE ASSEMBLy .. ··· ...... ··········· .... · .... ·········· ·· 11 -16
CRANKCAS E BREATHER .. ·· .. ·· .. ··· .. ···· .... · .. · ...... ············· 5-14
CRANKCASE SEPARATION ......................................... " -5
CRANKCASEITRANSMISSION/KICKSTARTER
SPECI FICATIONS .. ···· ...... ··· .. ··· .. ··· .. ··· ...... ·...... ············· .. ·· 1-8
.. .......................... 11 -6
CRANKSHAFT .......................
CYLINDER COMPRESSION ............................................ 7-6
CYLINDER HEAD·· ········ .... ··· .. ················ ............ ··········· .. · 7-7
CYLINDER HEADNALVES SPECIFICATIONS············· .. · 1-6
CYLINDER IN STALLATION·· ...... ········ .. ·.... ·· ...... ··········· .. · 8-8
CYLINDER REMOVAL ..................................................... 8-4
CYLINDER/PISTON INSPECTION·· .. ········ .. ·· ........ ··· .. ··· .. · 8-5
CYLINDER/PISTON SPECIFICATIONS ............ · .............. 1-7
DRIVE CHAIN · ........ · ..................................·.................... 3-13
DRIVE CHAIN SLIDER .... .... .. ............................. ............ 3-15
EMISSION CONTROL SySTEMS ··· .. ·..
···· .... ··· .. ···· 1-17
ENGINE IDLE SPEED······· .... ·· .... ····· .. ······· .... ·· .... ············ 3-13
ENGINE INSTALLATION.................. .................
.. .... 6·6
ENGINE OIL .......... ·· .... ······· .. ····· ...... · ...... ··· .. ··· .. ·.... ··· .... ··3-10
ENGINE OIL CENTRIFUGAL FILTER .... ·· .. ···· .. ·.... ··· .... ··3-12
ENGINE OIL STRAINER SCREEN .... · ................ ·.. · ........ 3-12
ENGINE REMOVAL ......................................................... 6-4
ENGINE STOP SWITCH ................ .. ............ ....... ........... 14-8
EXHAUST SYSTEM ········ .... ··· .... ·············· .. ······ .. ············· 2-5
FLYWHEEUSTATOR REMOVAL .... ·.... ····· ········· .... ··.... · 10-4
..... ......... 12·15
FORK·· .. ·· .... ······· .... ·· ........ ···· .. ······ .... ··· .... ·
FRONT BRAKE ...... ·· .... ············· .............. ·.... ··· .. ·· .... ··· .. · 12-13
FRONT FENDER .... ....... .... ............................... ................ 2-5
FRONT WHEEL .... ··· .. ·.. ······ .. ···· .... ·.. · .. ·.. ···· .... ·.. ·· .... ··· .... · 12-8

FRONT WHEEUBRAKEISUSPENSION!STEERING
SPECiFiCATIONS·· ·.. ·· .... ······· ···· ··· .. ··· ·.. ······ .. ···· ...... ··· .... · .. 1-8
FUEL LINE ........................... ........................ .. ... ................ 3-6
FUEL SYSTEM SPECIFICATIONS .. · .... · .................... · .. ·.. · 1-6
FUEL TANK .. · ........ · .................. ·.. · .... · ........ · .. · .. · ................ 2-4
GEARSHIFT LINKAGE ..................... ........................... ·9-16
GENERAL SPECIFICATIONS ··· ...... ···· .. ·.. ·.. ··· .... ········ .. ····· 1-5
HANDLEBAR .. ·· ........ ·.. ·.. ··· .... ·.. ·.. ·········· .... ···· .. ··· .. ·.... ··· .. 12-6
IGNITION COIL ............................................................ 14-7
IGNITION CONTROL MODULE .................................... 14-8
IGNITION SWITCH ........................................................ 14-9
IGNITION SYSTEM INSPECTION · .. · ...... ·...... ·.... · .......... 14-5
IGNITION SYSTEM SPECIFICATIONS ····· .. ·.... · .. ····· .. ····· ' -9
IGNITION TIMING ...................................... ................. 14-10
KICKSTARTER .... ·· ··· ······ .... ···· .. ······ .. ·· .. ·.... ········· ........ ··1 1·14
LUBRICATION & SEAL POINTS .......... ·.. · ........ ·...... ·.... · 1-13
LUBRICATION SYSTEM DIAGRAM ...... .... ..................... 4-2
LUBRICATION SYSTEM SPECIFICATIONS · .................. 1-6
MAINTENANCE SCHEDULE ........................................... 3-4
MODEL IDENTIFICATION .. ·.... · ........ · ...... · .... · .................. 1-2
NUMBER PLATE ············· .... ··········· .. ·· .... ······ .. ······ .. ·· .. ··· .. · 2-5
NUTS. BOLTS. FASTENEAS ............ · ...... · ................ · .... 3-19
OIL PUMP· ····· ·· ...... ···· .... ··· .. ·........ ···· .. · ...... ···· .. ···· ........ ·.. ·.. 4-4
PISTON INSTALLATION ·.... ·...... ····· .. ·· .. · .. ·· .... ······· .... ·· .... 8-8
PISTON REMOVAL .. · .... ···· .... ·.... ·· .. ······· ...... ·· .. ······· .... ·· .... 8-4
REAR BRAKE ............................................................... 13-10
REAR WHEEL ··· .... ·· .. ·.. ···· ............ ····· .. ·· ·.... ····· ········ .... ·· .. 13-5
REAR WHEE USUS PENSION SPECiFiCATIONS··· .. ··· .... 1·8
RIGHT CRANKCASE COVER INSTALLATION ·············9-19
RIGHT CRANKCASE COVER REMOVAL .. · .............. · ...... 9-5
SEAT ............ ·.. ·.. · .... .. · ............ · ........ · .... · ................ · ........ ·2-3
SERVICE INFORMATION
ALTERNATOR/CAM CHAIN TENSIONER ...... ····· .. ··· 10-3
CLUTCH/GEARSHIFT LINKAGE ................................. 9-3
CRANKSHAFTfTRANSMISSION .......... · .... · .......... · .. ·1 1-3
CYLINDER HEADNALVES .. ···· .. ·· ·· .... ···· .. ···· .... ······ .. ···· 7·3
CYLINDER/PISTON ···· .. ········· ·· ··.. ·· .... ·· ··· .. ···· .... ····· .. ····8-3
ELECTRICAL SYSTEM ............................ .. .... ............ 14-3
ENGINE REMOVAUINSTALLATION· ····· .. ···· .. ·.. ···· .... · 6-3
FRAMEIBODY PANElS/EXHAUST SYSTEM ............ 2-2
FRONT WHEE UBRAKEISUSPENSIONJ
STEERING .. · .. ···· .... ·...... ··········· .... ··· .. ····· .. ··· ...... ·········1 2-3
FUEL SYSTEM ·· .... ·...... ··········· .... ·· .. ······ .. ···· .... ······ .. ····5-3
LUBRICATION SYSTEM ............................................. 4-3
MAINTENANCE ·········· .. ···· .... ····· .. ··· .. ······· .. ······ .......... ·3-2
REAR WHEEUBRAKEISUSPENStON············· ·· .. ·.. ·.. 13-3
SERVICE RULES ············· .. · .. ·· .. ···· .......... ······ .. ·· .. ·.. ····· .. ·· .. 1-2
SHOCK ABSORBER······· ...... ·· .. ···· .... ·· .... ····· .... ···· .... ····· 13-12
SIDE STAND ....... .... .............................. .... ............. 2-6.3- 17
SPARK ARRESTER .............................. ·........................·3- 19
SPARK PLUG ...... ................................ .... .... .. ...... · ...... · .. · 3-8
STATORlFLYWHEEllNSTALLATION ···· ··· .. ··· .... ······· .. ·10-8
STEERING HEAD BEARINGS ....................................... 3-20
STEERING STEM ...... · ............................ · .................... · 12·18
SUSPENSION ................................................................ 3-18
SWINGARM ............................................................... 13-14
SYSTEM DIAGRAM
ELECTRICAL SYSTEM ............ ····· .. ·· .... ········· ........ ·· .. 14-2
................ 3-6
THROTILE OPERATION ...........................
TORQUE VALUES ....................................................... 1-10

17-1

INDEX
TRANSMiSSiON ······ ········ ·············· ······ ··············· .. ········· 11 -8
TROUBLESHOOTING
ALTERNATOR/CAM CHAIN TENSIONER ················ 10·3
CLUTCH/GEARSHIFT LINKAGE ................................. 9-4
CRANKSHAFTfTRANSMISSION······························11·4
CYLINDER

HEADNALVES·········································· 7-5

CYLINDERfPISTON ...... ..,.......... .... .... ......... ............... .. 8·3

ELECTRICAL SYSTEM ··········································· ···14-4
ENGINE DOES NOT START OR
IS HARD TO START .................................................. 16-2

ENGINE LACKS POWERT ······ .. ··············· .. ··············· 16-3

17-2

FRAME/BODY PANELS/EXHAUST SYSTEM···· ·· ...... ·2-2
FRONT WHEEUBRAKE/SUSPENSIONI
STEERING ......................................................... . 12-5, 13·4
FUEL SYSTEM ............................................................. 5-4
LUBRICATION SYSTEM ····················· ························ 4·3
POOR HANDLING ····················································· 16-6
POOR PERFORMANCE AT HIGH SPE ED ·· ···· ··········· 16-5
POOR PERFORMAN CE AT LOW A ND IDLE SPEED16-5
VALVE CLEARANCE ...................................................... ··3-9
WHEELSfTlRES ...................................................... ········3-20
WIRING DIAGRAM ......................................................·· 15-2