1999 Ski-Doo Factory Shop Manual Volume Three, Page 75Get this manual
Section 03 TROUBLESHOOTING Subsection 04 (TRANSMISSION AND BRAKE SYSTEMS)
SYMPTOM CONDITION TestInspection
BELT GLAZED EXCESSIVELY OR HAVING BAKED APPEARANCENORMAL USE1Check if drive pulley bushings are wornaInsufficient pressure on belt sidesReplace bushing2Check condition of drive pulley fixed half shaftaRusted drive or driven pulley shaftsClean shaft with fine steel wool3Check if pulley halves are cleanaOil on pulley surfacesClean pulley halves4Check pulley calibrationaImproper pulley calibrationCalibrate according to specifications