1972 Ski-Doo Shop Manual, Page 219Get this manual
3Q5-04 ELECTRIC STARTER CLEANING CAUTION: Armature, field winding coils and drive assembly must not be immersed in cleaning solvent as damage may occur1Clean carbon brushes and holders with clean cloth soaked in gasolineBrushes must be dried thoroughly with clean clothBlow out the brush holders using -compressed air2Remove all dirt, oil or grease from commutator using clean cloth soaked in gasolineDry well using clean, dry cloth3Clean engine starter gear teeth and drive assembly (clutch) with clean, dry cloth3-5-6
9On all MAA starters, remove armature and lever assembly from drive end bracketLift the lever from clutch assembly and remove shims from shaftNOTE: Do not remove bushings from drive or commutator end bracket from either starter unless damaged and replacement is necessary10Position deep socket on armature shaft adjacent to locking collar and using hammer, drive the collar from its seating (fig3-5-7)