1986 Ski-Doo Factory Shop Manual, Page 271Get this manual
Section 03 TRANSMISSION Sub-section 03 (DRIVE PULLEY)
Install inner half 011 crankshaft extension then position outer half assembly on fixed half squareshaft
CAUTION: Be careful when installing outer half a.ssembly on square shaft of drive pulley to avoid scratches on "OuTalon" bushing caused by square shaft edge
10, Governor cup
Install governor cup making sure that the shalt end rests in overno cu seati ngPosition ca screw with new locking tab lhen torque to 85 N- 163 Ibf-ftl CAUTION: Incorrect seating of shaft end in gov 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