1984 Ski-Doo Shop Manual, Page 189Get this manual

SECTION 03 TRANSMISSION SUB -SECTION 02 (DRIVE BELT)
Alpine model
The deflection is adjusted by moving engine bracketTo do so, loosen engine bracket nuts and adjust distance between pulleys

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