2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 44Get this manual
Section 02 TROUBLESHOOTING GUIDE Subsection 01 (ENGINE (2-STROKE))
Symptom: ENGINE EQUIPPED WITH RAVE VALVE DOES NOT REACH ITS FULL OPERATING RPM (500 TO 1000 RPM SLOWER)(cont'd)
5Check tension of RAVE springs- Inadequate spring tensionReplace6Check RAVE pressure holes- Clogged holesClean7Check clamps or sleeves- Damaged clamp(s) or sleeve(s)Replace8Check exhaust tightness- Exhaust system is leaking leading to too low back pressureReplaces parts and reseal
Symptom: ENGINE EQUIPPED WITH RAVEENGINE HESITATES AT LOW OR MID-SPEED
AND REACHES MAXIMUM PERFORMANCE ONLY AFTER WHILE1Check RAVE valve spring(s)- Spring tension is too low or spring(s) is (are) brokenReplace