1997 Ski-Doo Factory Shop Manual Volume One, Page 34Get this manual

Section 02 TROUBLESHOOTING Sub-Section 04 (TRANSMISSION AND BRAKE SYSTEMS)
SYMPTOM CONDITION TestInspection

LOOSENESS IS FELT IN DRIVE SYSTEM WHEN ACCELERATINGDECELERATINGNORMAL USE1Check drive chain tensionaDrive chain is too looseAdjust2Check play of driven pulley Woodruff key (aluminum frame models) aWorn Woodruff key or keywayReplace
SYMPTOM CONDITION TestInspection

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives