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Old 10-05-2013, 03:12 PM
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mapbike mapbike is offline
Motorized Bicycle Elite Member
Join Date: Mar 2010
Location: Central Texas
Posts: 5,379
Default Re: 80cc bike proble<

A sheared key on the shaft that the drive sprocket is on may very well be the problem with the wheel being able to be rotated regardless of clutch being engaged or disengaged.

Remove clutch cover and spin rear wheel and watch to see is anything on the clutch side rotates, if it DOESN'T move you likely have a sheared key between the drive gear and the shaft.

as for what you said about it not accelerating, was the engine reving up but just not going anywhere or was the engine just idling even when you twisted the throttle grip?

holler back with results

I dont always ride WOT, but when I do..I do my best to keep the rubber side down..Ride safely my friends!
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