1989 Ski-Doo Repair Manual, Page 331Get this manual
Section 03 TRANSMISSION Sub-section 07 (CHAINCASE)
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777B792027
Shim (2) lensioner shaft Roller Needle bearing Brass washer Tensioner adjustment screw Hair pin Chain tensioner O-ring Chaincase cover Cotter pin Castellated nut Washer Sprocket (smal) Shim (7) Chalncase Ball bearing Retaining ring Oil seal Taptite screw M6 ]0 (4) Orlng gasket
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Circilp Sprocket (large) Shim (7) Drive chain Cap screw M70 45 (2) Spring lock washer (2) nat washer 70.5 mm (2) Cap screw MIO 20 (3) Brass washer (3) Loctite 242 Filler capdipstick Drive axle bearing Drive axle oil seal Chaincase oil Drive axle holder Counters-haft Drive axle Screw MB 60 (2) Lock tab Nut MB (2)
REMOVAL
To remove chaincase proceed as followsRemove tuned exhaust pipe and muffler
39,40,41, Screw, lock tabnut
Unfold lock tab, unscrew nuts then remove caliper retaining screws
WARNING: Never remove exhaust components when engine is hot