1982 Ski-Doo Shop Manual, Page 126Get this manual
SECTION 02 ENGINE
SUB-SECTION 06 (503 ENGINE TYPE)
CLEANING
Clean all metal components in non-ferrous metal cleaner
DISASSEMBLY AND ASSEMBLY
To remove or install fan pulley retaining nut, lock fan pulley with special holder wrench(Use tool PIN 420 876355lAt assembly, torque nut to 62 N-m (46 ft-Ibsl
Holder wrench