Quote:
Originally Posted by Jim Mason
you are aware that the adjustment screw controls the air not the fuel? seat the needle and it is full rich...
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Just to add to this,
On a properly working carb, one sets the mechanical idle so the engine runs slow then screws in the adjustment until the engine starts to stumble then count the number of turns as you go the other way until the engine starts to stumble. Go back 1/2 the number of turns and it is set.
EX Clockwise, stumble, counterclockwise 2 turns, stumble, clockwise 1 turn.
As for the actual problem, jet flow is off, need flow tested jets.