1982 Ski-Doo Shop Manual, Page 177Get this manual
SECTION 03 TRANSMISSION SUB-SECTION 01 (PULLEY GUARD)
REMOVAL
Pullout hair pin and remove driven pulley guardPull on spring to disengage pin from frame bracket, in order to disengage drive pulley guard
(3) The length of uncompressed pin spring should not be
less than 47 mm (1 7 8") An uncompressed front guard spring should not be less than 20 mm (13 16")When assembling adjust length to 17 mm (1116")+
WARNING: Engine should be running only when pulley guard is well secured in placeparts