Idling Adjustment
With engine at operating temperature adjust idle speed screw to obtain 600-750 RPM. Now adjust idle mixture screw to give highest idle speed. Readjust, if necessary, idle speed screw to 600-750 RPM, then recheck mixture screw. Repeat this procedure until best idle is obtained. On this carburetor it is better to screw in mixture screw a little too far than not enough.