1972 Ski-Doo Shop Manual, Page 143Get this manual
TWO CYLINDER CAUTION: On electric models, disconnect negative cable (black) from battery before disconnecting positive cable at starter 2-03-03
3Straighten the locking washer located behind the magneto nut
4Disconnect the fuel lines at carburetor
SDetach transmission rod from gear change
lever by removing the cotter pin, washer and spring