1985 Ski-Doo snowmobile Service Manual, Page 260Get this manual
Section 03 TRANSMISSION Sub-section 03 (DRIVE PULLEY)
WARNING: Drive pulley repairs that include any disassembly or assembly procedures must be performed by an authorized Bombardier dealeror other such qualified personSub-component installation and assembly tolerances require strict adherence to procedures detailes
Crankshaft
locking tool
REMOVAL
Some pulley components are marked to insure proper assemblytherby maintaining optimum balancementIf components lack such marks, marking should be done manually before disassembly, as per illustration
PIN 420876 640
INDEXING MARKS IN LINE
A009002011
Inner half Outer half
Hub plug
Remove spark plug(s) then bring PT.Opiston at T.D.CpositionRotate drive pulley 45 clockwise then insert enough strarter rope into cylinder to fill it completely- Remove the cap screw
4 Governor cup