Smoking neutral switch on a curvy - SV650.org

12-03-16, 08:14 PM

So I have pretty much got my bike back together (I haven't put the fairings back on yet, and the bolt holding the can on sheared, so I have no can on it either).

Cranks over by hand fine, full compliment of fluids, so I think, well let's give it a whirl (battery may hold out or not) it turns over a couple of times, but stops. I try this a couple more times, but I think the battery it pretty much kaput. I then notice some smoke. It dissipates, but the wires from the neutral switch are warm, and one has partially melted the insulation (the black one if that means any thing).

I can replace the neutral switch no problem, but without knowing what caused this, I'm probably going to cook another. Any ideas of the root cause?

yorkie_chris · 14-03-16, 08:12 AM

Dodgy earth strap perhaps so the starter current is trying to earth via the neutral switch?

14-03-16, 08:31 AM

Ahh, makes sense. I'll check the engine earth tonight.

12-03-16, 08:14 PM	#1
ClunkintheUK Guest Posts: n/a	Smoking neutral switch on a curvy So I have pretty much got my bike back together (I haven't put the fairings back on yet, and the bolt holding the can on sheared, so I have no can on it either). Cranks over by hand fine, full compliment of fluids, so I think, well let's give it a whirl (battery may hold out or not) it turns over a couple of times, but stops. I try this a couple more times, but I think the battery it pretty much kaput. I then notice some smoke. It dissipates, but the wires from the neutral switch are warm, and one has partially melted the insulation (the black one if that means any thing). I can replace the neutral switch no problem, but without knowing what caused this, I'm probably going to cook another. Any ideas of the root cause?

14-03-16, 08:12 AM	#2
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Smoking neutral switch on a curvy Dodgy earth strap perhaps so the starter current is trying to earth via the neutral switch? __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

14-03-16, 08:31 AM	#3
ClunkintheUK Guest Posts: n/a	Re: Smoking neutral switch on a curvy Ahh, makes sense. I'll check the engine earth tonight.

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