4-24 FUEL SYSTEM
• Remove the vacuum inlet cap 3 from the carburetor (for cylin-
ders #1 or #4).
• Connect one of the carburetor balancer’s rubber hoses to this
inlet.
& 09913-13121: Carburetor balancer
• Start the engine and let it run at 1 750 r/min.
Adjust the engine speed by turning the throttle stop screw.
• Turn the air screw 1 of the carburetor balancer so that the
vacuum pressure causes the steel ball 2 to rise to the center
line 3 of the tube.
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