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Old 05-09-2013, 07:18 AM
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Tyler6357 Tyler6357 is offline
Motorized Bicycle Elite Member
Join Date: Mar 2012
Location: Santa Barbara, CA
Posts: 611
Default Re: Brand new to gas bikes.

Actually, the more I think about it the more I think that something has fallen into the crank case (lower end) and is causing the crank to get stuck. Take off the cylinder and pull the piston up to its maximum point (closest to the head location), then turn the bike upside down and slap the engine, shake the whole bike if you have to and see if anything falls out. It could be that a piston ring broke off and part of it fell into the case, check the piston rings for any breakage, they should be totally round except for a small gap in each one. They should each be the exact same.
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