2000 Polaris Indy 500 / 600 snowmobile service manual, Page 144Get this manual
FUEL SYSTEMCARBURETION Mikuni VM Carburetor Adjustments Float Level Adjustment
1Remove float bowl2With carburetor in an inverted position, float arm (A) should be parallel with body (B)See illustration at rightArms must be parallel to each other3To adjust float arm, bend tang contacting inlet needleCAUTION: Never bend the float arm itself
Leak Testing Needle and Seat
1Be sure float level is adjusted properly2Invert carburetor3Install float chamber and connect pressure tester PN 2870975 to fuel inlet fitting