1980 Ski-Doo Shop Manual, Page 223Get this manual
SECTION 05 SUB-SECTION 02 (DRIVE BELT)
DRIVE BELT
REMOVALINSTALLATION
When removing drive belt always mark the rotation
directionReinstall in same direction
Everest, Futura, Blizzard 5500, 7500, 9500, Grand Prix Special Super Sonic, Ultra Sonic
DRIVE BELT REMOVAL
Tilt cab and remove pulley guard(Elite model: unlock and raise driven pulley support)Open driven pulley by twisting and pushing the sliding halfHold in open position then slip slackened belt over top edge of pulleySlip belt from drive pulley