2005 Ski-Doo RT Series Shop Manual, Page 211Get this manual
Section 06 DRIVE SYSTEM Subsection 02 (DRIVE PULLEY)
DRIVE PULLEY ADJUSTMENT
The drive pulley is factory calibrated to transmit maximum engine power at predefined RPMFactors such as ambient temperature, altitude or surface condition may vary this critical engine RPM thus affecting snowmobile efficiencyThis adjustable drive pulley allows setting maximum engine RPM in the vehicle to maintain maximum powerCalibration screws should be adjusted so that actual maximum engine RPM in vehicle matches the maximum horsepower RPM given in TECHNICAL DATANOTE: Use precision digital tachometer for engine RPM adjustmentNOTE: The adjustment has an effect on high RPM onlyTo adjust, modify ramp end position by turning calibration screwsCalibration screw has notch on top of its head
A16D0GA
TYPICAL 1Position (not numbered)