1984 Ski-Doo Shop Manual, Page 199Get this manual
SECTION 03 TRANSMISSION SUB-SECTION 03 (DRIVE PULLEY)
INSPECTION
Drive pulley should be inspected annually
5,9, Innerouter half
Check outer half for excessive lateral play and inner half shaft for scratches
12, Roller
Check for roundness of external diameter
14, Shouldered bushing
Check for excessive wear
ASSEMBLY
14, Shouldered bushing
Shouldered pin bushings must be installed in outer half as per illustration