1999 Ski-Doo Factory Shop Manual Volume One, Page 190Get this manual
Section 05 TRANSMISSION Subsection 03 (DRIVE PULLEY)
INSTALLATION
Recheck the torque of 90 to 100 Nm (66 to 74 lbfft)
WARNING
Do not apply anti-seize or any lubricant on crankshaft and drive pulley tapers;
WARNING
WARNING
After 10 hours of operation the transmission system of the vehicle must be inspected to ensure the retaining screw is properly torqued
Never use any type of impact wrench at drive pulley removal and installationClean mounting surfaces as described in CLEANING above