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Hey guys qq. I am doing a top end on the old 220, and way wondering what the best cem. to use to clean the jug, head, and all the power valve comp. I was thinking of getting some degreaser and dipping everything and letting it sit over night. It has alot of carbon build up on the power valve. Any thoughts?

Yamaha Combustion Chamber Cleaner is the best I've ever found

Berryman Products from your local auto parts store works very well too.

Ron

Thanks guys I will check them out. I hope I can get most of the carbon build up off the pv