1983 Ski-Doo Shop Manual, Page 55Get this manual
c CLEANING
Clean all metal components in non-ferrous metal cleaner
SECTION 02 ENGINE SUB-SECTION 03 (377 ENGINE TYPE)
DISASSEMBLY AND ASSEMBLY
To remove or install fan pulley retaining nut, lock fan pulley with special holder wrench PIN 420876357At assembly, torque nut to 65 N-m (48 ft-Ibs)
Holder wrench