2005 Ski-Doo REV Series Shop Manual, Page 49Get this manual
Section 02 TROUBLESHOOTING Subsection 03 (DRIVE AND BRAKE SYSTEMS)
SYMPTOM
LOOSE IN DRIVE SYSTEM WHEN ACCELERATINGDECELERATING
CONDITION
TESTINSPECTION
NORMAL USE 1Check drive chain tensionaDrive chain is too looseAdjust2Check radial play of driven pulleyaWorn splinesReplace pulley
SYMPTOM
VIBRATIONS ORIGINATING FROM DRIVE PULLEY
CONDITION