2000 Polaris Indy 500 / 600 snowmobile service manual, Page 145Get this manual
FUEL SYSTEMCARBURETION Adjustments Throttle Synchronization Procedure-Mikuni VM
1Remove air box, noting position of throttle cable junction blockReposition throttle cable and junction block in same position when air box is reinstalledThrottle Cable Synchronization (Throttle Gap) 2Referring to specification section in chapter 1, select correct diameter Throttle Gap synchronization drill gauge for your engine3Back out idle screws about three turns4Slightly lift throttle slides with throttle lever and insert tool or drill gauge under throttle slideAllow throttle slides to returnSee Ill15Loosen lock nut and turn throttle cable adjuster (on top of carburetor) in (clockwise) or out (counterclockwise) as required until slight drag can be felt on the gauge or tool6Securely tighten throttle cable synchronization lock nut7Repeat steps through on remaining carburetor(s)Idle Gap Synchronization 8Referring to chart in the Specifications section, chapter 1, select correct diameter Idle Gap drill gauge for the engine9Slightly lift throttle slides with throttle lever and insert idle gap drill gauge under throttle slideAllow throttle slides to return10Turn idle adjustment screw in as required until only slight drag can be felt on the gauge11Repeat steps through 10 for remaining cylinders12Verify proper throttle lever free play and adjust if necessary, by loosening cable adjuster locknuts and turning adjusters out equally until throttle lever freeplay is correctThrottle Free Play (Std 0.0100.030 (.25-.76mm) EZ Throttle 0.0500.060 (1.25-1.50mm) NOTE: Verify oil pump synchronization any time carburetors are checked or adjusted