Start with the air screw out 1.5 turns and the needle with the clip in the center position. Turning the air screw in will make the mixture rich at, and just after idle . Turning the screw out will make it leaner . The clip on the needle can also be moved to calibrate the jetting. If you move the clip up, you lean out the mid circuit. Down makes it richer. The main jet is most felt in the 3/4 to full throttle range. Change main jets in large steps at first to get a feel for what it does to the power of your bike. Listen to the way the engine sound changes. Look for changes in exhaust smoke. A word of caution here . As the part number of the main jet gets larger, the jet is richer, smaller and the jetting gets leaner. Remember not to make the main jet so lean that you create excessive heat and damage the engine .
I'm I wrong or is this backwards when it comes to adjusting from lean to rich?adjusting the needle down would lean it.Never mind. I get it now. Moveing the clip up lowers the needle. Sorry. I'm tired as he'll Fter cutting grass for ten hours. Yes I said cutting. Not smoking. Lol.
I'm I wrong or is this backwards when it comes to adjusting from lean to rich?adjusting the needle down would lean it.Never mind. I get it now. Moveing the clip up lowers the needle. Sorry. I'm tired as he'll Fter cutting grass for ten hours. Yes I said cutting. Not smoking. Lol.