1997 Ski-Doo Factory Shop Manual Volume Two, Page 133Get this manual
Section 03 ENGINE Sub-Section 11 (CARBURETOR AND FUEL PUMP)
CARBURETOR ADJUSTMENTS
A02C09A
A01C33A
1Idle speed screw 2Air screw
6, Air Screw Adjustment
Completely close the air screw (until slight seating resistance is felt) then back off as specifiedTurning screw in clockwise enrichners mixture and conversely, turning it out counterclockwise leans mixtureRefer to TECHNICAL DATA 09 for the specifications