1989 Ski-Doo Repair Manual, Page 328Get this manual
Section 03 TRANSMISSION Sub-section 07 (CHAINCASE)
INSPECTION
Visually inspect the chain for cracked, damaged or missing link rollersCheck for worn of defective bearings, sprockets and tensioner componentsWARNING: If chain deflection is greater than 38 mm (1.5 in) (without chain tensioner), replace chain and check condition of sprockets
NOTE: For high altitude regions, the "High altitude technical booklet" (PIN 484055200 and PIN 484 0545 00 for binder) gives information about calibration according to altitude
ASSEMBLY
5,6,7, Oil deflector, bearing cupbearing cone
Position oil deflector ring then sit bearing cup in chaincase aperture as shown
GEAR RATIO MODIFICATION
For particular applications, the number of teeth of the sprockets can be increased or decreased on lower and upper sprocketsAvailable lower sprockets: 33, 34, 35, 37, 38, 39 teeth Available upper sprockets: 14, 15, 16, 17, 18, 19, 20 teeth Available chains: 88, 90, 92 links The chain length may be affected depending the combination of lowerupper sprocketsSelect chain length according to this chartGEAR RATIOCHAIN LENGTH CHART GEAR RATIO CHAIN LENGTH (LINKS) STANDARD ON