1989 Ski-Doo Repair Manual, Page 352Get this manual
Section 03 TRANSMISSION Sub-section 08 (G EARBOX)
Longer portion
AO" 0C'3019
A socket driver POZIDRIV #3 such as SNAP-ON FPD 32 is recommended to unscrew blocking wheel screws
INSPECTION
Visually inspect the components for excessive wear and damage
Coat set screw threads with teflon sealantSet screw should projects from transmission cover by 1.5 mm (H8 1116 in}
WARNING: If chain deflection is greater than 25 mm (1 in) (without chain t8nsioner), replace chain and check condition of sprockets
ASSEMBLY
Reverse disassembly procedure, paying attention to the following :