2003 Ski-Doo REV Series Factory Shop Manual, Page 82Get this manual
Section 03 TROUBLESHOOTING Subsection 04 (TRANSMISSION AND BRAKE SYSTEMS)
SYMPTOM CONDITION TESTINSPECTION
BELT TOO NARROW ON ONE SECTIONNORMAL USE1Check for frozen trackaFrozen trackFree track from ice2Check parking brakeaParking brake is engagedRelease parking brake3Check track tensionalignmentaTrack too tightAdjust track tension and alignment4Check drive pulleyaDrive pulley does not operate properlyRepair or replace drive pulley5Check idle speedaEngine idle speed is too highAdjust according to specifications6Check drive belt lengthaIncorrect belt lengthReplace with an appropriate drive belt (refer to TECHNICAL DATA)7Check distance between pulleysaIncorrect pulley distanceReadjust according to specifications8Check belt heightaBelt height is incorrectAdjust according to specifications