2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 187Get this manual
Section 03 ENGINES (2-STROKE) Subsection 10 (FUEL SYSTEM)
IDENTIFICATION
All carburetors are identified on their body
CAUTION: 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 instructionsReplace any jets having gum or varnish on their surfaces
WARNING
Solvent with low flash point such as gasoline, naphtha, benzol, etc should not be used as they are flammable and explosiveCheck inlet needle tip conditionIf worn, the inlet needle and seat must be replaced as matched setNOTE: Install needle valve for snowmobile carburetor onlyIt is designed to operate with fuel pump systemCheck throttle slide no5 for wearReplace as necessaryCheck idle speed screw no7 for straightnessReplace as necessaryCheck for fuel soaked into float no12; replace as necessaryCheck float no12 for cracks or other damages affecting free movementreplace as necessaryInspect throttle cable and housing for any damagesReplace as necessary