basicaly my 125cc thumpstar pit bike doesnt reach its max throtle then if in neutral it will eventualy die,i tried adjusting the idle screw which works for a while but then changes back to the old revs i dont know what else i can do maybe clean the carb????

Quenton Van Der Westhuizen, October 2009

you can try cleaning the carb out if not that maybe the timing has sliped a bit comon fault

peter, January 2010