May be the clutch. Post #5 below shows how to adjust it.
https://chinariders.net/showthread.php?t=21934
The throttle may need to be opened up a bit to give it a bit more speed, also.
__________________
2012 Kawasaki Versys
1984 Honda Magna V65
2016 Rhino 250
2016 Tao Tao 125D
|