Well my relatively new 80cc motor has been running great. Yesterday I was taking my evening ride when suddenly the engine rpms went high and I lost power (essentially zero torque to chain sprocket). I set about trying to remedy the problem by
1. checking the cable
2. adjusted both the star nut and the clutch main spring.
neither of these things helped so I began to look at it more closely. Thanks to the helpful post at this website I completely dismantled the clutch and in so doing I found the problem, The woodruff key on the sprocket side was sheared off and the main threaded bar was also damaged. I've ordered the parts and I think I can put is back together. I have one question though. Behind the chain sprocket were 6 or 7 (I didn't count them) very thin washers. IS THIS NORMAL? I've not seen them referred to on other posts related to clutch or drive train problems.
1. checking the cable
2. adjusted both the star nut and the clutch main spring.
neither of these things helped so I began to look at it more closely. Thanks to the helpful post at this website I completely dismantled the clutch and in so doing I found the problem, The woodruff key on the sprocket side was sheared off and the main threaded bar was also damaged. I've ordered the parts and I think I can put is back together. I have one question though. Behind the chain sprocket were 6 or 7 (I didn't count them) very thin washers. IS THIS NORMAL? I've not seen them referred to on other posts related to clutch or drive train problems.