No start on 87 Big Bear 350?

[bobg]

Had the starter solenoid hang 87 Big Bear while I was riding it. Wrecked the battery. Put a new battery and solenoid in. Wont start with the starter, but will start with the rope and runs great. The fuse is good, but I don’t have any continuity through the circuit breaker. I’m assuming there should be. Can’t find one online, can I replace it with a fuse? Posted a picture of the circuit breaker. 
 

Bob

[Mech]

Are you sure that's a circuit breaker ? 

If it is, circuit breakers are like fuses, except they self reset once the over load has gone away. They are usually used on essential and safety circuits.. like headlights or ignition. 

I reckon itt might pay to check it with an ohm gauge and see whether it conducts one way but not the other, or, in through a wire and out that metal plate, but not the other way..  It looks to me more like some sort of semi-conductor.

Back when that bike was made, circuit breakers were crude electro-mechanical devices, not solid state electronics like that thing you have there..

[bobg]

I checked it with a digital volt meter and there’s no continuity. Yamaha Parts House calls or a circuit breaker. 
 

bob

Edited July 1, 2023 by bobg

[Gwbarm]

That may be an older version of a starter cutoff relay, haven't seen any thing like that on my Bear.

[bobg]

I found a fuse housing and wired it in temporarily and it cranked right over. I’ll have to find a waterproof one. 
 

bob

[Mech]

It doesn't look to me to have any moving parts..

Any chance of a side view ? Or behind..

And if it is a circuit breaker then sure a fuse will do the job. Depending on what it was protecting though, you may need a standard auto fuse, or a slow blow fuse. A standard fuse may keep blowing due to startup current if it was for the fan for instance, but a slow blow fuse will tolerate that two second overload.

[bobg]

I don’t know why the circuit breaker protects, I’ll have to look at the electrical diagram. The only fuse I had was a 2 amp, started the atv twice and didn’t blow it.  I’ll have to pick up some fuses when I get to town next week. 
 

bob