2005 Ski-Doo Racing Handbook, Page 397Get this manual

2005 Ski-Doo Racing Handbook, Page 397

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SECTION 082005 MX 550 AND 380 FC
Use timing light and digital induction type tachometer (PN 529 014 500)
A17E10A

TYPICAL 1 Trigger coil mark 2 Magneto flywheel mark