1989 Ski-Doo Repair Manual, Page 272Get this manual
Section 03 TRANSMISSION Sub-section 03 (DRIVE PULLEY)
GENERAL
Some drive pulley components (return spring, ramp) can be changed to improve vehicle performance in high altitude regionsThe "high altitude technical data booklet" (PIN 484055200 and 484 0545 00 for binder) gives information about calibration according to altitude,CAUTION: Such modifications should only be performed by experience mechanics since they can greatly affect vehicle performance
Use clutch holder (P IN 529 0064 00)
NOTE: TRA clutch stands for Total Range Adjustable clutch
WARNING: Drive pulley repairs that include any disassembly or assembly procedures must be performed by an authorized Bombardier dealer, or other such qualified personSUb-component installation and assembly tolerances require strict adherence to procedures detailed
REMOVAL
31,33, Lock washercap screw
In order to remove drive pulley retaining screw, lock the crankshaft by using one of the following method: Insert the crankshaft locking tool (P IN 420876640) into the impulse hole of the engineSlowly rotate the crankshaft until it locks into position ,CAUTION: Do not use any type of pin other than the tool PIN 420 8766 40(TYPICAL)