1989 Ski-Doo Repair Manual, Page 320Get this manual
Section 03 TRANSMISSION Sub-section 07 (CHAINCASE)
Chaincasedriven pulley assembly
Using two large screwdrivers inserted between chaincase and frame, pry complete assembly from vehicleToward chaincase
AOOl 00301
Oil deflector
Bearing cup
8earing cone
12, Oil seal
Using an appropriate pusher, press new oil seal into chaincase hubOil seal must sit flush with case hub edge
14, Sprocket
A002 003 011
DISASSEMBLY
Disassemble driven pulley from chaincaseRefor to Driven pulley section 03-04
Place lower sprocket with longer flange toward track side of chaincase