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<DIV>I suggest that when setting the idle mixture on YS engines with the idle adjustment "needle," just back out the screw until the mixture is correct without much concern for number of turns. There are some throttle barrels that have the idle mixture screw hole drilled past the air bleed hole in the barrel. The consequence is that it may take more than two turns from bottomed to begin to open the bleed hole. </DIV>
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<DIV>Earl</DIV></BODY></HTML>