2003 Ski-Doo REV Series Factory Shop Manual, Page 150Get this manual
Section 04 ENGINE Subsection 08 (CARBURETOR AND FUEL PUMP)
At throttle slide assembly, needle retainer must face carburetor bodyA32C70A
A32C71A
1Needle retainer 2Ensure O-ring gasket is properly seated in nipple area
After inserting throttle slide cover in place and before installing screws, ensure O-ring gasket is properly seated in its groove especially in the area around vent nippleSee illustration above
1Idle speed screw 2Pilot screw (one on each carburetor)