I just got my first motorized bicycle from my brother. I do not know a whole lot about these engines, but I have been learning a lot on my own the last few days.
Engine is 66cc skyhawk. He purchased the bike about 3-4 weeks ago from a guy in town. I know he has had his dad adjust the clutch a couple times since buying it.
He was riding it about a week ago, pulled the clutch hit kill switch. When he went to leave he pedaled up, let go of clutch and everything turned with no resistance.
I got it from him, I pulled the clutch cover and the clutch plate nut was off, (locking screw first thing that was missing), everything sprang out, the first few threads inside the clutch plate nut were burred smooth. I reassembled everything following the grubee instructions, and still managed to have enough thread to hold everything together correctly.
Then still noticed no resistance to back wheel with clutch disengaged.
I removed left side cover and the nut holding the drive sprocket on was loose, I tightened it as tight as possible by hand, reassembled everything, rolled the bike and the wheel skidded across ground.
I Hopped on, held clutch, pedaled up to speed, released clutch and nothing. No resistance. I took apart drive sprocket cover and same situation, nut was loose again. This happened several times.
I thought to myself it seems like it would be reverse threaded, because the direction the sprocket spins will loosen the nut everytime,but what do I know.
So I checked the schematics and realized I'm missing another part. Grubee parts calls is a spring gasket. It goes between drive sprocket and nut.
So my questions are
1 - is the nut supposed to be reverse threaded or am I wrong for thinking that made more sense.
2 - is this spring gasket really the glue that holds this nut on?
3 - Is this supposed to be tightened with impact or torque wrench?
Going to order a few things online soon, so trying to isolate problems and understand.
Thanks for reading and thanks to all who reply.
Sorry if I gave too much unnecessary information.
Engine is 66cc skyhawk. He purchased the bike about 3-4 weeks ago from a guy in town. I know he has had his dad adjust the clutch a couple times since buying it.
He was riding it about a week ago, pulled the clutch hit kill switch. When he went to leave he pedaled up, let go of clutch and everything turned with no resistance.
I got it from him, I pulled the clutch cover and the clutch plate nut was off, (locking screw first thing that was missing), everything sprang out, the first few threads inside the clutch plate nut were burred smooth. I reassembled everything following the grubee instructions, and still managed to have enough thread to hold everything together correctly.
Then still noticed no resistance to back wheel with clutch disengaged.
I removed left side cover and the nut holding the drive sprocket on was loose, I tightened it as tight as possible by hand, reassembled everything, rolled the bike and the wheel skidded across ground.
I Hopped on, held clutch, pedaled up to speed, released clutch and nothing. No resistance. I took apart drive sprocket cover and same situation, nut was loose again. This happened several times.
I thought to myself it seems like it would be reverse threaded, because the direction the sprocket spins will loosen the nut everytime,but what do I know.
So I checked the schematics and realized I'm missing another part. Grubee parts calls is a spring gasket. It goes between drive sprocket and nut.
So my questions are
1 - is the nut supposed to be reverse threaded or am I wrong for thinking that made more sense.
2 - is this spring gasket really the glue that holds this nut on?
3 - Is this supposed to be tightened with impact or torque wrench?
Going to order a few things online soon, so trying to isolate problems and understand.
Thanks for reading and thanks to all who reply.
Sorry if I gave too much unnecessary information.