2002 Ski-Doo Shop Manual Volume One, Page 182Get this manual
Subsection 11
Section 04 ENGINE (CARBURETOR AND FUEL PUMP)
CLEANING AND INSPECTION
The entire carburetor should be cleaned with general solvent and dried with compressed air before disassemblyCAUTION: Heavy duty carburetor cleaner may be harmful to the float material and to the rubber parts, O-rings, etcTherefore, it is recommended to remove those parts prior to cleaningCarburetor body and jets should be cleaned in carburetor cleaner following manufacturer's instructionsDo not hesitate to replace any jets having gum or varnish on their surfaces
2,3, E-Clip and Needle
Remove screws from needle retaining plate to withdraw the needleThe position of the needle in the throttle slide is adjustable by means of an E-clip inserted into of grooves located on the upper part of the needlePosition (at top) is the leanest, (at bottom) the richestNOTE: The last digit of the needle identification number gives the recommended position of the Eclip from the top of the needleExample Needle identification 6DH4-3 Recommended positionof the E-clip from top