by JAWS » Wed Dec 20, 2006 1:00 pm
The best bet and easiest is to order the JD Jetting kit. It has a special needle for your bike and carb, main jets and recommended settings.
If you are comfortable with the jetting process, do a search for 250x and jetting. You will get a lot of information.
Joe
'05 CRF450X,McClain suspension, Cycra Probends, Pastrana FMX Pro Tapers,BRP Sub mount & Scotts stabilizer.See carb sticky for more