2001 Ski-Doo Factory Shop Manual Volume One, Page 154Get this manual
Section 04 ENGINE Subsection 07 (AXIAL FAN COOLING SYSTEM)
NOTE: The following procedures can be done without removing engine from chassis
REMOVAL
NOTE: To facilitate further disassembly, fan nut may be removed before removing fan housingRemove rewind starter, starting pulley, trigger coil wire from 4-connector housing then fan housing ass'y
To remove or install fan pulley retaining nut no17, lock fan pulley with special holder wrench (PN 420 876 357)At assembly, torque nut to 48 Nm (35 lbfft)