For a long time now, I cannot ride my Honda SS50 because the thread of the spark plug has been damaged, so I bought a repair kit for the handsome amount of 60 Euro. Seriously, this stuff is way too pricey.
But I thought "hey, it will not be the only time that a thread goes bonkers (am i right, overhead camshaft PS and PC riders?) in an alloy head and perhaps I can help others too"
Noble thought, wrong execution. Partly my mistake, partly the tool supplier's mistake, but yeah I cannot trade it in any more. Because I should have invested one (1) Euro in a thread gauge that I ordered of eBay.
I strongly advise you to grab one from the internets, since they are wa-haay too pricey in the store. I really want to keep buying my parts and tools in the local stores, but this was a rare exception because the repair kit was so darn expensive.
If I had invested the one (1) Euro in this tool, then I would have bought the right thread repair kit for the 60 Euro!Oh well, lesson learned. C7HSA spark plugs have a M10x1.0 thread. And not a 1.25.