i have a peugeot speedfight 2 50cc with 74 main jet roller 5.5 giannelli pipe its propper slow of the line then it picks up quick to it hits 20 mph then it slows back down it keepes going but very slow i put some new 5.5 rollers in and it ran fine with no problems but now it is starting to do it again does any one no what this problem is plz need some help

alex, February 2010

clean all of it,i would personally take the variator totally off and disassemble it and wash it all in a tub of petrol with a stiff brush,then dry it and grease the roller ramps the 3 sliding guides that are plastic and stop the steel plate on the backlof the variator eating into the ally part that the rollers sit in,also grease the steel spacer thats the variator slide back and forth on and the inside on the brass/bronze bush/dont go mad witht the grease just a thin coating and make sure you wipe any excess from the faces the belt runs on .try to clean the whole area inside the engine where the belt runs as the rubber dust just causes problems in the end kickstarts jam and the transmission struggles,cleaning wont hurt it.

adam bike doctor, February 2010

and witch bit do i clean chers

alx, February 2010

cheers witch bit do i grease were the rollers slot in or were the variator slots in plz

alex, February 2010

the variator must be jamming and not moving apart and together properly,take it apart and grease the moving parts and make sure they are all clean.

adam bike doctor, February 2010