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Old 07-09-2013, 11:51 PM   #3
Xrrl   Xrrl is offline
 
Join Date: May 2013
Location: Calhoun, Georgia
Posts: 6
I'll say there's a chance that the battery doesn't have enough juice to turn the starter fast enough. The sound is from the engine's compression pushing the piston down and turning the crank faster than the starter can turn it (momentarily), and then the starter catches back up and creates the sound.
That's a theory I have anyways. I think these bikes use sprag clutches for the starter.


 
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