2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 168Get this manual
Section 03 ENGINES (2-STROKE) Subsection 07 (AXIAL FAN COOLING SYSTEM)
Reassembly
Install fan belt on bottom pulley first then position onto fan shaft, as shown in the next photo1 2
A03C2AA
FAN BELT PROPERLY INSTALLED ON BOTTOM PULLEY AND FAN SHAFT 1Bottom pulley 2Fan shaft 3Starting pulley
Reinstall fan assembly on fan shaftTemporarily tighten fan nutCAUTION: When reinstalling fan assembly, ensure that key is properly positioned into fan shaft keywayA03C2BA