2001 Ski-Doo Factory Shop Manual Volume One, Page 173Get this manual
Section 04 ENGINE Subsection 10 (CARBURETOR AND FUEL PUMP)
IDLE SPEED FINAL ADJUSTMENT
7, Idle Speed Screw
CAUTION: Before starting engine for the final idle adjustment, make sure that oil pump is adjustedThe oil injection pump adjustment must be checked each time carburetor is adjustedRefer to OIL INJECTION SYSTEMStart engine and allow it to warm then adjust idle speed to specifications by turning idle speed screw clockwise to increase engine speed or counterclockwise to decrease itNOTE: On twin-carburetor models: Turn adjustment screw the same amount to keep carburetors synchronizedRefer to TECHNICAL DATA for the specificationsCAUTION: Do not attempt to set the idle speed by using the air screwSevere engine damage can occur
Skandic WTLC Use big diameter (for VM 38) of choke plunger tool (PN 529 032 100)All Models Insert proper diameter of choke plunger tool into choke air inlet of each carburetorTool stopper may not lean against recess wallThough it must be within mm (.040 in) of recess wall