1978 Ski-Doo Shop Manual, Page 36Get this manual

SECTION 02 SUB-SECTION 02 (DRIVE BELT) CAUSE REMEDY

10Belt "Flip-Over" at high speed
a) Pulley misalignmentb) Belt excessive speed

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