2003 Johnson ST 6/8 HP 4 Stroke Outboards Service Repair Manual, PN 5005471, Page 63Get this manual

2003 Johnson ST 6/8 HP 4 Stroke Outboards Service Repair Manual, PN 5005471, Page 63

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ELECTRICAL CHARGING SYSTEM

Running Alternator Output Test
IMPORTANT: Disconnect battery cables before
proceeding with this checkDisconnect the rectifier red leadWire to 40 amm