2003 Johnson ST 55 HP WRL 2 Stroke Commercial Service Repair Manual, P/N 5005483, Page 74Get this manual

2003 Johnson ST 55 HP WRL 2 Stroke Commercial Service Repair Manual, P/N 5005483, Page 74

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IGNITION TROUBLESHOOTING
Install the spark plugs and spark plug leadsStart the engine in test tank and run the engine at the RPM where the problem existsCarefully hook an induction timing light

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