1999 Ski-Doo Factory Shop Manual Volume One, Page 86Get this manual
Section 03 TROUBLESHOOTING Subsection 06 (SUSPENSION AND TRACK)
SYMPTOM CONDITION TestInspection
NOISE OR VIBRATIONS ORIGINATING FROM THE TRACKNORMAL USE1Check slide suspension retaining boltsaMissing bolt(s) allowing movement of certain components which in turn interfere with track rotationReplace missing bolt(s)2Check condition of idler wheel(s)aIdle wheel rubber is damagedReplace3Check guide cleatsaTop portion of guide cleat(s) is bentReplace4Check sprocketsaOne or various teeth of drive shaft sprockets are brokenReplace sprocket(s)5Check track rods andor internal traction teethaOne or various track rods andor teeth are brokenReplace track