hi

could some one tell me what the fuel/air mixture screw and the needle height position should be set at on a gas gas 250 2006 model with the standard dellorto carb as my bike seems to be smoking a hell of alot and the plug is black as hell when its took out. im running oil at 60ml for every 5 litres of fuel aswell.

thanks alot

coxy

clip 2nd notch from bottom , mixture screw 3 to 3.5 turns out .... oil 70 cc of good synthetic in 5 litres of good fuel. if its that smoky could be a new set of rings required and repack exhaust and clean out front and middle pipe.