2003 Ski-Doo REV Series Factory Shop Manual, Page 177Get this manual
Section 05 TRANSMISSION Subsection 03 (DRIVE PULLEY)
26,28,29, Calibration Screw, Locking Nut and Governor Cup
Calibration screw has notch on top of its head
Example: Calibration screw is set at position and is changed to position 5So maximum engine RPM is increased by about 400 RPMTo 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 numberA16D0FA