2004 Skidoo Tundra Skandic Series Service Manual, Page 78Get this manual
Section 03 TROUBLESHOOTING Subsection 03 (FUEL AND OIL SYSTEMS)
FUEL AND OIL SYSTEMS
SYMPTOM CONDITION TestInspection HIGH FUEL CONSUMPTION OR RICH MIXTURENORMAL USE1Check fuel tankaPerforated fuel tankReplace fuel tank2Check fittings on fuel pump, fuel tank and carburetor(s)aLeaking fittingsReplace defective part3Check choke adjustmentaFuel flows through choke circuit while engine runsReadjust choke4Check float height in carburetor(s)aFuel level is too high in float bowl(s)Adjust according to specifications (refer to TECHNICAL DATA)5Check needle valve of carburetor(s)aForeign particles prevent needle valve(s) from closing andor worn seating areaClean or replace needle valve(s), then clean seating areaSYMPTOM CONDITION TestInspection FUEL LEAKS IN ENGINE BASE WHEN ENGINE IS STOPPEDNORMAL USE1Check items 3, and of HIGH FUEL CONSUMPTION2Check fuel pump diaphragmaCracked diaphragmReplace