1980 Ski-Doo Shop Manual, Page 238Get this manual
SECTION 05 SUB-SECTION 03, (DRIVE PULLEY)
INSTALLATION
Clean crankshaft extension us'mg fine steel wool and clean clothCAUTION: When installing drive pulley on engine, reference mark on fixed halt sliding half and governor cup must be in lineLock crankshaft in position as explained in removal procedureMake sure crankshaft IS rotated 45 counterclockwise from T.D.Cposition and that cylinder IS completely filled with starter ropeInstall fixed half on crankshaft extension then position sliding half assembly on fixed half square shaftCAUTION: Be careful when installing sliding half assembly on square shaft of drive pulley to avoid scratches on "Duralon" bushing caused by square shaft edgeInstall governor cup making sure that the shaft end rests in governor cup seating, Position retaining bolt with new lock tab then torque to 85 Nom (63 ft-Ibs) CAUTION: Incorrect seating of shaft end in goverY nor cup can cause crankshaft bendingWhen pulley is completely assembled always measure distance of both pulley halves to make sure that the pulley is properly installedDistance must be 76 mm (3")Lift rear of vehicle off the groundInstall drive belt and pulley guard then start engine and apply throttle and brake2-3 timesStop engine and retorque retaining boltBend one side of lock tab over governor boltPush on sliding half towards governor cup 10 remove all possible slack when measunng