Suzuki GSX1200 1999 Service Manual page 132

CALIBRATING THE CARBURETOR BALANCER
• Start the engine and let it run at idle until it is warmed up.
• Stop the engine.
• Remove the vacuum inlet cap 1 from the carburetor. (#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 2 of the carburetor balancer so that the
vacuum pressure causes the steel ball 3 to rise to the center
line 4 of the tube.
• After making sure that the steel ball remains at the center line,
disconnect the hose from the vacuum inlet and connect the
next hose to the vacuum inlet.
• Turn the air screw for this tube until the steel ball 5 is at the
center line of its respective tube.
• Repeat the above procedure on the third and fourth hoses.
The carburetor balancer is now ready to be used to synchronize
the carburetors.
FUEL AND LUBRICATION SYSTEM 4-23