2005 Ski-Doo REV Series Shop Manual, Page 297Get this manual
Section 07 ELECTRICAL SYSTEM Subsection 01 (IGNITION SYSTEM)
A17E10A
TYPICAL 1Trigger coil mark 2Magneto flywheel mark
A17E0ZA
NOTE: These marks cannot be used to check dynamic (with engine running) ignition timing with timing light: new mark must be scribed on magneto flywheel for this purpose Scribe new mark on magneto flywheel as follows Remove the fan cover from the engine Maintain magneto flywheel so that previous marks remain aligned Scribe or punch mark on magneto flywheel so that it perfectly aligns with the arrow on crankcase, refer to illustrationThis new timing mark should be used for future timing checks (dynamic timing) Reinstall rewind starter Check the timing with timing light