1986 Ski-Doo Factory Shop Manual, Page 247Get this manual
Section 03 TRANSMISSION SUb-section 02 (DRIVE BELT)
Lift the countershaft upward BPproX50 mm (2 in) and slip the belt between the shaft and the bearing cage to remove completely,
To install the drive belt, reverse the procedureCAUTION: Once belt is installedbe sure to sacure the counters haft bearing by closing the bearing cage and firmly tightening the retaining screwNOTE: Loosen the Allen Screw previously tightened to release pressureThen, turn clockwise until slight resistance is felt against sliding pulley to obtain an equal pressure on each Allen screw
NOTE: The top of the drive belt must be flush with the driven pulley edgeEqually screw or unscrew the three Allen screws to obtain this specific adjustment
Citation LS, LSE, Tundra, Tundra LT, Skandic R, Safari (all)Formula SP