I know, I know - its a 90cc 4-stroke - not much there to start with. I bought an 02 used and it has a Big Gun pipe. It is jetted like crap - previous owner was not jetting guru. I haven't torn into it, yet, but was wondering if anyone would know of a good baseline to start with for jetting on this bike- needle clip position, mixture screw setting and main jet size. Only mods will be the Big Gun pipe, K&N filter and probably no airbox lid/drilled. Thanks to anybody for help. I think stock main jet is 80.

 

GO WITH THE BASICS......START BIG ON THE MAIN JET AND WORK YOUR WAY DOWN.....
DEPENDS ON WHAT YOU ARE LOOKING FOR.......


TIM

 

I was thinking going to a 95 main jet and raising the needle one slot. What do you think of that?

 

SOUNDS OK...JUST KEEP AN EYE ON YOUR PLUG.....IT WILL TELL YOU WHAT IS GOING ON...

TIM