2003 Ski-Doo ZX Series Factory Shop Manual, Page 253Get this manual

2003 Ski-Doo ZX Series Factory Shop Manual, Page 253

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Section 06 ELECTRICAL Subsection 02 (IGNITION TIMING)
Checking Ignition Timing
Use timing light (PN 529 031 900) and digital induction type tachometer (PN 529 014 500)A17E10A