merc 7.5 hp ign coil question

[willy16]

Hi. My 7.5 hp #5617142, 1980-81.I need a new ign coil for my engine. Seems the oem may be nla. My coil has 3 holes to mount to a bracket. Can't seem to find these original coils. Would there be an aftermarket coil that would do the job?
I do have a 339-5288T 2 coil on the shelf,not sure what it fits. Thank you in advance..

 

[schematic]

that coil should work. be sure the coil you use has a bare pigtail on the underside.

 

[tommarvin]

Yo Willy 16, did you test to make sure you need a new coil? no disrespect no spark whats going on?
There is a huge ignition after market company better than OEM out there,widen your search, search harder,your coil is out there.

 

[willy16]

thank you for reply. The engine runs fine (2cyls) for about 20 mins.,then it drops a cyl. Once the coil gets warm-no fire.
I swapped # 1&2 coils & the problem moved with the coil. Next problem is i have not found an aftermarket coil w/the
stranded ground wire as with the oem coil. I'm concerned w/trying the odd coil. I do not want to damage the switch box
as it is new & expensive. Any thoughts?? Thanks

 

[schematic]

this coil is not available aftermarket. The coil you try must have the pigtail or it will burn the switch box. The coil is available from merc for about $90