1972 Ski-Doo Shop Manual, Page 29Get this manual
1-04-02 REMOVAL (All Models, except Alpine and Valmont) 1Drain oil from chain case or gear box2Except Nordic models with gear box, release the drive chain tension by inserting tension releaser tool (fig1-4-1) DRIVE AXLE
8If the vehicle is equipped with speed ometer, remove angle drive unit and coupling cable (fig1-4-3)
Coupling cable
Angle drive unit
9Remove the three (3) capscrews securing end bearing housing to framepry the housing from the frame with two (2) screwdrivers (fig1-44)