1985 Ski-Doo snowmobile Service Manual, Page 277Get this manual
Section 03 Sub-section 04
TRANSMISSION
(DRIVEN PULLEY)
REMOVAL
Driven pulley can be removed from the transmisSion shaft using the following procedure:
1 9, Outer cam
With sliding half and spring removed, push the roll pin out of the shaft and remove the outer cam
Pulley guarddrive belt
Remove from vehicle
If necessary, heat hub of fixed pulley and outer cam to facilitate removal
INSPECTION
16, Spring
Spring torsional load In order to measure driven pulley spring tension, the pulley halves must be separatedTo do this, insert length of liS" diarod between the halvesCheck tension using fish scale positioned 90 with pulley axleSpring tension pre-load should be 5.5 kg (12 Ibs)5.5 kg (12 Ibs)
Brake caliper assembly
Remove from bearing support
2,9, Discsupport
Position suitable support under the drive shaft then punch the roll pin out of the shaft