Mercruiser 50 amp ignition circuit breaker?

dgyank70

Seaman Apprentice
Joined
Jun 18, 2016
Messages
36
Odd timing.
Replaced distributor cap and rotor the other day.
Seemed to resolve random quitting / difficulty starting (cranking but not firing).
The next day, went to test some more, and couldn't get it to catch.
Turned out I coincidentally ran out of fuel apparently as I docked the night before.
Added fuel, went to crank, and suddenly there was no crank at all...
No buzzer when key was turned...
Checked circuit breaker next to distributor (see pic)
Reset button did not appear to function (as if maybe it didn't trip).
Temporarily jumped across the circuit breaker and things worked.
Have temporarily bypassed the breaker.

(BTW- I have service manuals on order...)

Question
-is there anything about my replacing the distributor and rotor that somehow could have caused this? (for instance, the many repeat cranking attempts and such during the distributor problems, and then the smaller # of cranking attempts after the gas ran out?)
-what is downstream of this breaker that may be at risk at the moment?
-did it trip or just fail?
-what do I order to replace it? Is this right?

https://www.amazon.com/Bussmann-50A-Circuit-Breaker-32V/dp/B00DP23UI4

The three pics are 1 blurry one showing it in the center of the image; near the distributor.
Then a front & back of the breaker. The 50 amp label fell off in the flail over it...



Thanks!!!
 

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dgyank70

Seaman Apprentice
Joined
Jun 18, 2016
Messages
36
Thank you so much!!!

I didn't include my motor information, oops- 2008 mercruiser 4.3l Alpha TKS I believe (never sure about the 'Thunderbolt' designation), but it looks like this would work fine.

Thank you!!
 
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