2000 Polaris Indy 500 / 600 snowmobile service manual, Page 151Get this manual
FUEL SYSTEMCARBURETION Adjustments Throttle Synchronization ProcedureMikuni TM-38 Flatslide Carburetors
Mikuni TM-38 carburetors are synchronized at wide open throttle without the engine runningThe middle carburetor on triples, and the PTO side carburetor on twins have non-adjustable set screw on the throttle shaftThis carburetor is what the other carb(s) is synchronized to1Remove airbox 2Remove top caps on all carburetors