07 crf50 carb by aintskeered » Tue Aug 05, 2008 2:06 pm
I have a 07 crf50 for my daughter. it has a bbr pipe, choke removed, 60 main, and uni filter. I put the quiet core insert in the pipe an it now runs like crap. the needle jet is not adjustable and the air screw seems to be non -adjustable!! any one ever hear of a non adjustable air screw? should I just go back to the stock jetting?