2004 Ski-Doo REV Series Factory Service Manual, Page 245Get this manual
Section 06 TRANSMISSION Subsection 02 (DRIVE PULLEY)
To Adjust: Just loosen locking nut enough to pull calibration screw partially out and adjust to desired positionDo not completely remove the locking nutTorque locking nuts to 10 Nm (89 lbfin)CAUTION: Do not completely remove calibration screw otherwise its inside washer will fall offCAUTION: Always adjust all calibration screws and make sure they are all set at the same number