2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 42Get this manual
Section 02 TROUBLESHOOTING GUIDE Subsection 01 (ENGINE (2-STROKE))
Symptom: ENGINE TURNS OVER BUT FAILS TO START (MANUAL START)(cont'd)
7Check engine compression- Insufficient engine compressionReplace defective part(s) (ex piston(s), ring(s), etc
Symptom: IRREGULAR ENGINE IDLE (NORMAL USE AFTER ENGINE WARM UP)1Check choke- Choke plunger may be partially openedReadjust2Check carburetor adapter- Air enters through crackReplace3Check air screw position- Inadequate fuelair mixtureAdjust according to specifications (refer to TECHNICAL DATA)4Check dimension of pilot jet- Inadequate fuelair mixtureAdjust according to specifications (refer to TECHNICAL DATA)5Check reed valve- Improper tightness andor openingReplace or adjustRefer to proper engine subsection6Perform engine leak test- Leaking gaskets allow air to enter in engineReplace defective parts7DPM manifold air vent is obstructed- Carburetion is too leanEnsure proper air vent8Check ignition system trigger coil air gap- Air gap is too largeAdjust according to specifications (refer to TECHNNICAL DATA)