1985 Ski-Doo snowmobile Service Manual, Page 253Get this manual
Section 03 TRANSMISSION Sub-section 03 (DRIVE PULLEY)
DISASSEMBL Y
WARNING: This procedure must be performed in well ventilated areaT
NOTE: Some bolts of the drive puley have "Loctite" on their threads, it is advisable to use tool such as an impact to break the "Loctite" seal before attempting to unscrew
,CAUTION: Avoid contact between crankshaft seal and acetone because damage may occur
INSPECTION
Drive pulley should be inspected annually
3, 13, Outer half assemblygovernor cup
CAUTION: Do not tap on the governor cup
20, Roller
Check for roundness of external diameter
The governor cup can be easily removed by insterting two (2) 14" '" NC bolts and tightening alternaltely until cup pulls out
21, Shouldered bushing
Check for excessive wear
4, "Duralon" bushing
Inspect the "Duralon" bushing condition by checking the free-play of the sliding half pulley This is achieved by restraining the inner half and checking if the sliding half moves in the direction of the arrows more than mm