dear fellows how to adjust the air/feul mixture on 70cc bikes carb ? what are the default settings i played with them but cant seem to set the mixture ,, my sparkplug gap is set to .63mm which is within prescribed range of .6 to .7 mm..but its tip is quite black,,carbon sooth is accumulated there..
here is a pic of my carb,, its keihin pc-09f cwc-30 or cwg-30
a video or pic to illustrate it will be very helpful..
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