1982 Ski-Doo Shop Manual, Page 236Get this manual
SECTION 03 TRANSMISSION SUB-SECTION 08 (GEARBOX)
to At assembly, lubricate gear change shaft and compensate clearance with shims (required end play 0.3 mm (0 .011 ")Set shim 0.3 mm on inner side and as many as required on outer side under gear change lever, leaving 0.3 mm (0.011 ") play
If required, chain locking clip must be installed as per following illustration, with its closed end towards the rotary motion direction when in "Forward" position
_ CAUTION: The finger of the gear change shaft must "not block the gear change forkMount gear change fork and index rod with index spring and ballTo do this, press ball and index spring into the bore of gear change fork using ball mounting bolt PIN 420476020 then the ball mounting bolt is pushed through with the index rod and the index rod is screwed inTransmission covp-r