1997 Ski-Doo Factory Shop Manual Volume Two, Page 199Get this manual
Section 05 ELECTRICAL Sub-Section 03 (IGNITION TIMING)
5Verify the position of the timing mark on the magneto flywheel as follows: NOTE: When checking timing, certain procedures require that the magneto flywheel be turned in clockwise direction, viewed facing the magnetoIf it is necessary to turn back (counterclockwise) for any reason, rotate the magneto flywheel at least one-quarter turn counterclockwise, and then rotate it clockwiseThe last magneto flywheel movement when making critical check must always be in clockwise direction, to ensure that the slack in engine moving parts is taken-upaRotate the magneto flywheel counterclockwise, one-quarter turn then carefully rotate it clockwise until the needle indicates the specified measurement, indicated in TECHNICAL DATA 09-02bMake sure that the dot located on the side of the magneto flywheel protrusion perfectly aligns with center of trigger coil core, refer to illustrationcIf the marks do not align, loosen trigger coil screws and move trigger coil to align dot with center of trigger coil core'