Here's my '09 WR250 carb settings from the Owner's Manual. Main jet -- 460 Idle jet -- 35 Starter jet -- 80 Throttle piston -- 4,0 Metering pin -- 6BFY43-74 Metering pin slot -- 3rd Main nozzle -- R-8(914) Float - g 6,1 Idle mixture adjusting screw -- 1 1/4 And here's the '06 WR250 carb settings from the Owner's Manual Main jet -- 400 Idle jet -- 15 Starter jet -- 80 Throttle piston -- 4.0 Metering pin -- 6DJ8-61 Metering pin slot -- 3rd Main nozzle -- R.5 Float - g 6,1 Idle mixture adjusting screw -- 3 Owner's of '07 and '08 WR250s please fill in your owner's manual settings so that we can see how similar/different the factory settings are. Also, please list the jetting that works for you along with the year. Any help reconciling various years settings would be greatly appreciated as I'm trying to get my '09 WR250 to run clean.
from my 07 WR250 owners manual. Main jet--400 pilot jet--35 starter jet--80 slide--4.0 needle--J8-6DJ8-60 needle possition-- 3rd air screw--1 1/2 I have recently installed the OEM BB 300 kit and these settings aren't working, still playin with the jets! My buddy has the 08 WR250 and the carb seetings are spot on with my 07.
