1984 Ski-Doo Shop Manual, Page 253Get this manual
SECTION 03 TRANSMISSION SUB-SECTION 07 (CHAINCASE)
REMOVAL
INSPECTION
Visually inspect the chain for cracked, damaged or missing link rollersInspect for defective bearing, sprockets, etc
To remove chaincase from vehicle proceed as followsNOTE: On the Blizzard 9700 disconnect the muffler and push it aside underneath the exhaust pipes
2, Chaincase cover
Remove and drain oil
INSTALLATION
Reverse removal procedure and pay attention to the following:
End bearing housing
Slacken to ease chaincase removal
Drive axle oil seal
Pry out from chaincase