1999 Ski-Doo Factory Shop Manual Volume One, Page 241Get this manual
Section 06 ELECTRICAL Subsection 02 (IGNITION TIMING)
A05E0TA
A00B4FA
1Fan cowl timing mark 2Red fin
TIMING LIGHT (PN 529 031 900)
If marks do not align, there is something wrong with fan mountingCheck Woodruff key and fan-