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riderssb250x
09-08-2009, 08:35 AM
i finished my 250r and now its time to jet it i need help,

i finished breaking it in with a 180 main and i think a 60 pilot with the a/f screw 2.5 out it was rich for break in

now i need help on what to jet it to do have it running good it stumbles in high gears i think i needa drop the main but im not sure


i have a stock 34mm carb, boyseen rad valve, fmf full pipe, open lid with a foam filter, .60 wiseco piston

can someone help me out? i dont wanna jet it lean and blow it

RyanWsly
09-08-2009, 09:45 PM
http://www.fmfracing.com/TechSupport/JettingCenter