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IMO best way to set the idle mix is do disconnect and ground one plug with the idle just high enough to keep it running on 1 cyl. adjust that cyl. by turning the mixture screw in until it runs rough then back out until it runs rough counting the turns between the 2 rough points and the correct setting is 1/2 way between those 2 points. Then repeat to set the other side.




this is the way i have done it and it works well enough. I bought a carb tune for 2 cyl wich works well and a very long set of needle nose plyers that will reach in and turn the screw, counter clockwise for right side and closkwise for left side (sitting on bike) even pushing down on the spring will change the setting so you have to let it settle after the change and blip your throttle a few times, having a fan in front of the cooler is a must or she gonna get warm. You will never get it dead on, very close is usually close enough. Also make sure everything else is good, valves don't need to be done etc. I use the nipples on the intake and not the carb, i know others use the ones on the carbs, i want to balance whats making it to the engine and not just at the back of the carb, not sure if it makes a differance, just what i do.




This is the correct way. First spring for a CarbTune. The carbs should be balance several times a year and anytime you make adjustments. Always use a floor fan. You will be shocked by the improved performance.


Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats. H. L. Mencken