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Old 04-23-2011, 07:55 PM
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Al.Fisherman Al.Fisherman is offline
Motorized Bicycle Elite Member
Join Date: Sep 2009
Location: Calera, Alabama
Posts: 1,966
Default Re: Engine won't turn over

Originally Posted by pop-leon View Post
I have a new 60cc sky hawk bike engine.Every thing is lined up good and my bike peddles easy with clutch in free wheeling position. MY problem is that when I release the clutch to start the engine it won't turn over and you can't peddle it. The engine turn's over fairly easy with the plug out. (HELP)
What I would do is remove the chain, remove the magneto cover and use a ratchet and a socket and turn the engine over and see it it locks up. If it does, change to a NGK plug (might be a different in the reach) you need to do this and a new plug lead anyway. If that fails, remove the head, and try to rotate the crankshaft. If it doesn't lock up, add a extra head gasket, maybe 2. While you have the head off...mill both head and cylinder, using some where around 250 grit paper on a flat service (glass). Only remove enough that you can see that the surfaces are flat. I have never seen a head that wasn't warped.
Looking for HT's parts?
HT pre instillation tips.
Engine running problems?
HT breakdown Photos

Ron ><)))))*> Calera, Alabama

Last edited by Al.Fisherman; 04-23-2011 at 07:58 PM.
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