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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
Normal break in or damage
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[QUOTE="2bitsamile, post: 1349898, member: 64945"] which manual says that? if piston to cylinder clearance is set correctly, and adequate time given for warm up, proper jetting, ... there will be no scuffing of piston, no need to take engine apart. Don't assume cylinder platters set clearance correctly, measure it yourself definitely not normal. looks like there is a triangular shaped chunk taken out of the cylinder. check to see if the piston ring locating pin has been pushed in. That can happen if the ring is on top the pin as you slide the cylinder over the piston. I install piston into cylinder 1st, then install wrist pin to avoid that potential problem [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
Normal break in or damage
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