No spark 55 HP Evinrude triumph 1969

sad boater

Cadet
Joined
Mar 23, 2026
Messages
6
Let me start by saying that the boat prior to a burnt connection to the stator it was running great. I was a mechanic of car and stuff but honestly boats confuse me a little.. I do have the repair manual but I don't own the tools needed for the tests. So what I have found was the stator short overloaded the rectifier and ignition coil causing cracks in both. My question is about the amplifier is there a way to test it with modern equipment? It is a 3 wire amplifier and I do have the 12v incoming voltage. I was able to do the ohm check for the stator I got 1.0 ohms and no sign of short to ground. Second question what else should I check? I'm kinda lost on this.....

Thanks for any help, the sad boater
 

Crosbyman

Admiral
Joined
Nov 5, 2006
Messages
6,019
post exact mdl ans ser#... if the kill circuit is not the cause the " amplifier" is suspect according to Chat...
this may.. help but if you have no tools to test ....shop time may be on the horizon. techs for 1969 engines are getting rare..and $$$$
 

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  • Evinrude 55hp 1969 CDI tests.pdf
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sad boater

Cadet
Joined
Mar 23, 2026
Messages
6
No this doesn't help it's a completely different system than the video shows. From what I can tell there is no kill switch circuit on my boat. Never has been. That was the first thing I searched for. The model number is 55973A serial number J11067. It ran before the stator wires burned up, bad connection. After that I found both my rectifier and ignition coil cracked. I'm assuming I fried everything. I replaced the rectifier and ignition coil. I get 12v to the amplifier but only 5v coming out going to the points. The attached file does give me a couple ideas to check. I did all the tests I could in the book. There is no signs of stator overheating or short. It has 1.1 ohms when I checked the two yellow wires and neither showed short to ground.

Thank you
 

sad boater

Cadet
Joined
Mar 23, 2026
Messages
6
post exact mdl ans ser#... if the kill circuit is not the cause the " amplifier" is suspect according to Chat...
this may.. help but if you have no tools to test ....shop time may be on the horizon. techs for 1969 engines are getting rare..and $$$$
The only thing I can't check is the amplifier. It is available but cost is $400 not trying to throw $400 darts at y boat.....lol I was a diesel mechanic for 20 years but honestly that means nothing when I look at the electrical system on this boat motor.
 

sad boater

Cadet
Joined
Mar 23, 2026
Messages
6
No. Not that I can tell. I did the test in the book and I have no visible spark from the coil. It is new as is the rectifier. I was really hoping that was all it would be. I'm not that lucky. It ran great when I had it out.... until it didn't.
 
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