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Old 01-15-2011, 12:01 PM
papirican71 papirican71 is offline
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Join Date: Sep 2009
Location: florida
Posts: 7
Default rear wheel not engaging

ok i have posted on here several times, and after following various peoples advice that responded, i am still having the same problem. here is the seneriao. i start my bike the normal way, peddling down a slight hill to gather speed, let the clutch out, but when i twist the throttle, nothing happens, and the engine dies. i noticed too that the rear wheel is not engaging. the engine is running, but i am getting no throttle response. does anyone else have (or had) this problem? I have plenty of gas, but like i said the wheel is not engaging, and i get nothing when i twist the throttle. and yes, the throttle cable is connected and working. please help. i dont have the money to take it to a shop to get fixed, so i am trying to do the repairs myself. if anyone is interested, i can send my number so that u can hear what i am talking about. thanks
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Old 01-15-2011, 03:22 PM
breno's Avatar
breno breno is offline
Motorized Bicycle Elite Member
Join Date: Aug 2010
Location: Syd. OZ
Posts: 411
Default Re: rear wheel not engaging

if the wheel wasnt engaging you wouldnt be able to clutch start your bike...

When the motor is off and you turn the back wheel by hand (as though ur trying to clutch start it by hand) is there resistance when trying to turn it, as in can you feel the compression?
If yes then its likely your clutch/wheel is engaged.

Put the tip end of a screw driver to the middle carby and your ear to the other end of the screwdriver then when you twist the throttle grip are you hearing the sliding motion within the carby?
-> Reading this signature was pointless <-
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Old 01-16-2011, 07:33 AM
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wayne z wayne z is offline
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Join Date: Dec 2010
Location: louisiana
Posts: 1,746
Default Re: rear wheel not engaging

Take the intake manifold off and check to see if the gasket has been properly cut out.

Someone else here had the same symptoms as yours and they found that their gasket had the hole not quite punched out, and the paper slug was blocking off the intake.

If the intake checks out, check the exhaust system for blockage.

Sounds like your clutch might be slipping, check for some slack in the cable.
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Old 01-17-2011, 12:39 AM
bitsnpieces bitsnpieces is offline
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Join Date: Dec 2010
Location: Melbourne, AUS
Posts: 195
Default Re: rear wheel not engaging

Maybe bad wiring?

I know I didn't ground my white wire properly, thought I had to connect it to something; boy was I wrong.

I would pedal, let go of the clutch, hear the engine running, stop pedaling, engine dies. Throttle would make a revving noise but only a small one which did nothing. Engine would only keep running if I continually pedaled.

If this sounds exactly like yours, possibly something to do with the white wire possibly making contact with something when it shouldn't, should be isolated (I taped mine up).

If this isn't it, I guess it would be something mechanical inside and my only guess is that which ever part of the engine that spins the small sprocket which turns the wheel is damaged or not functioning as it should be; thus engine powers, but unable to turn the sprocket to turn the wheel.

But you saying you can't throttle makes me believe this is more the case, or the white wire problem, as my guess is, even without throttle, your bike should just idle, not die; just a guess.
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