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Author Topic: Another M90, Hit n Miss.......  (Read 2074 times)

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Re: Another M90, Hit n Miss.......
« on: May 28, 2020, 04:43:29 pm »
Hi David, I am quite late with this reply and I rather assume you may have gotten things worked out by now.


For the off sized plug I would have shaved the plug to fit the socket. Jin's plugs are of inconsistent finish and do not take to wrenches and sockets as nicely as a standard 1/4-32  spark plug from nearly any hobby store or ebay. Just about any other plug from any other supplier will fit perfectly in a 5/16 or 8 mm tool.


Did you get after shaving the piston top?