2005 Ski-Doo REV Series Shop Manual, Page 160Get this manual
Section 03 ENGINES Subsection 08 (COOLING SYSTEM)
Install the air inlet duct no3 with screws no1 and no2Reinstall tuned pipe and mufflerRefer to EXHAUST SYSTEM
A09C0VA
TYPICAL 1Unused shim(s) here 2Adjust here 3Positioning noses 4Some engines only
Select pulley halves so that the one with positioning noses will be on fan sideEnsure to insert these noses into fan notchesOnce fan belt is properly adjusted, torque fan nut to 48 Nm (35 lbfft) using holder wrench, as shown in the following photo