Suzuki GSF600Y 2000 Service Manual page 163

• 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 4 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.
CARBURETOR SYNCHRONIZATION
Remove all of the vacuum inlet caps, before synchronizing the
carburetors. Connect the carburetor balancer hoses to these
vacuum inlets and then adjust the carburetors as follows.
• Start the engine and keep it running at 1 750 r/min.
Observe the tachometer reading.
• When the steel balls in tubes #1, #2, #3 and #4 are at the same
level, the carburetor is correctly adjusted.
• If the steel balls are not at the same level, adjust the throttle
valve synchronizing screws 1, 2 and 3.
Adjusting order is as follows.
1 → 2 → 3
FUEL SYSTEM 4-25