What Are The Correct Carburetor Adjustment Screw Settings

Start with the low and high needles at 1-1/4 turns. Get it running and keep it going for about a minute. Then start with the low speed adjustment. Turn it in very slowly and find the point at which it runs at the highest idle. At this point it should die out when trying to accelerate. Turn the low speed needle out slowly until you can hit the throttle and it accelerates without hesitation. Now you can move on the high speed adjustment. Run it at full throttle and slowly turn the high speed needle in/out to find the point at which it is running at the highest rpms. At this point it will sound good and run well but not have much power under a load. With it running at full throttle back the high speed needle out slowly until the engine just starts to falter and miss.

That's where you want to leave it. It should now accelerate quickly and when put under a load it should sound smooth.

Hope that helps.