1999 Ski-Doo Factory Shop Manual Volume Two, Page 151Get this manual
Section 04 ENGINE Subsection 07 (AXIAL FAN COOLING SYSTEM)
NOTE: The following procedures can be done without removing engine from chassis
Cut locking tie located under rewind starter (electric start models only)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
CLEANING
Clean all metal components in non-ferrous metal cleaner