1989 Ski-Doo Repair Manual, Page 257Get this manual
Section 03 TRANSMISSION Sub-section 03 (DRIVE PULLEY)
GENERAL
Some drive pulley components (return spring, counterweight, calibration washer) can be changed to improve vehicle performance in high altitude regionsThe "high altitude technical data booklet" (P 1N 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 performanceWARNING: 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
(TYPICAL)
AOOO 002 057
10, Inner half
To remove the inner half, slide length of steel pipe over shaftAttach with 516 in nut and bolt, as illustratedThe inner half can then be removed with pipe wrench (Unscrew counterclockwise)