1985 Ski-Doo snowmobile Service Manual, Page 257Get this manual
Section 03 TRANSMISSION Sub-section 03 (DRIVE PULLEY)
6, 15, 16, Hub plug
The hub plug is pushed by the clutch spring pressureAt disassembly, hold hub plug firmly against outer half until the three (3) bolts are completely removedThis will prevent damage of the outer half threadsMark reference point on both halves
5,8, "Duralon" bushing
To disassemble "Duralon" bushing from hub plug, use suitable pusher and hammer or press
AOO7003004
CAUTION: Do not disassemble counterweights unless replacement is necessary
Maximum free play mm 1118")
CLEANING
1,2, Innerouter half
Inside of outer half should be cleaned with clean clothThe square shaft can be cleaned with fine stele wool and clea cloth
CAUTION: Ensure rollers are in good conditionT Replace as required
ASSEMBLY
3,4, Guard
Torque to N-m (53 Ibf-in)
1, Inner halfcrankshaft