2003 Ski-Doo ZX Series Factory Shop Manual, Page 211Get this manual
Section 05 TRANSMISSION Subsection 03 (DRIVE PULLEY)
INSTALLATION
Torque screw to 80 to 100 Nm (59 to 74 lbfft)Install drive belt and belt guardRaise and block the rear of the vehicle and support it with mechanical stand
WARNING
Make sure the track is free of particles that could be thrown out while track is rotatingKeep hands, tools, feet and clothing clear of trackEnsure nobody is standing near the vehicleAccelerate the vehicle at low speed (maximum 30 kmh (20 MPH)) and apply the brake, repeat timesRetorque screw to 90 to 100 Nm (66 to 74 lbfft)