Reply To: Merc 4hp long shaft ….need to know

[rudderless]

I’ve got a 4.5 hp, 1979. Spark happens at points closing. Mine grounds the ignition module’s output for kill instead of the module’s input from coil. Has a low and high speed exciter coil that feeds the module.

Yours might or might not have the same ign system though…that serial number might be mag..

http://leeroysramblings.com/mercury_4.5.htm

• This reply was modified 5 years ago by rudderless.
• This reply was modified 5 years ago by rudderless.