2003 ST 4 Stroke 9.9/15HP Johnson outboards Service Repair Manual P/N 5005714, Page 59Get this manual

2003 ST 4 Stroke 9.9/15HP Johnson outboards Service Repair Manual P/N 5005714, Page 59

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IGNITION AND ELECTRICAL IGNITION TROUBLESHOOTING
Out of Spec
Rep lace the ignition coil

Check spark plug for evidence of high-tension leakNO
Repla the spark plug
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