Old Merc Outboard Ignition

Forevers

Recruit
Joined
Jul 2, 2011
Messages
2
Recently acquired a 1976 3 cyl 65 hp Merc.
Ran perfectly at test run, got it home and wouldn't hit a lick...No spark.
Ordered Seloc book and did all the tests noted therein.
Trigger is toast. Stator and coils test within spec. Further inspection noted trigger wiring inside heat shield traveling up under flywheel had crumbled leaving all four wires twisted and shorted together. Common situation as I understand it.
My question...Is it likely under these conditions that the switchbox is also toast? The book does not show a way to test the switchbox.

Thanks to the Merc mechanics who have been here before.
 

CharlieB

Vice Admiral
Joined
Apr 10, 2007
Messages
5,617
Re: Old Merc Outboard Ignition

The switchbox should not have been affected.

Some have managed to carefully repair/replace trigger wiring, otherwise replace the part and retest igniton.
 

Forevers

Recruit
Joined
Jul 2, 2011
Messages
2
Re: Old Merc Outboard Ignition

Thanks for sharing your knowledge, CharlieB.
Ordered a CDI Trigger today.
 
Top