1983 Ski-Doo Shop Manual, Page 174Get this manual
SECTION 03 TRANSMISSION
SUB-SECTION 07 (CHAINCASE)
REMOVAL
Remove the tool box Remove pulley guard, drive belt and access plug (upper)Release chain tensionRelease track tensionPry oil seal from chaincase (lower part) and drain oilDisconnect brake cable Pry out lower access plug Remove cotter pin and spacerRemove nut on hinge rod at chaincase bracket From the inner side of frame, remove the nut securing chaincase lower bracketRemove bracketRemove nuts, washers and "U" clamp holding the chaincase to the frameRemove chaincase shim(s) if applicable Move chaincase towards drive pulley to disengage hinge rodRemove drive axleUsing two (2) large screwdrivers inserted between chaincase and frame, pry complete assembly from vehicle
Bearing cup
Oil retainer ring
Using an appropriate pusher, press oil seal into chaincase hubOil seal must sit flush with case hub edge Place lower sprocket with longer flange toward track side of chaincase (For proper sprocket and chain use, see Technical Data
INSTALLATION