1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 211Get this manual

1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 211

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CHARGING SYSTEM
Charging System Resistance
1 Ground the ignition coil high tension wire so engine does not start2 Crank engine over for 15 seconds to discharge the battery slightly3 Reconn