Onan gen

[Full Moon]

I've been chasing a starting problem with my 8KW diesel generator. I tracked it to a blown fuse going to the starter selonoid(sp?) I replaced the fuse and it worked once. The next time the fuse wouldn't fit the holder, first hint. I replaced the fuse holder and it worked once. After checking everything the fuse holder had been melted but the fuse had not blown. I think the previous mechanic??? had put too large a fuse in, 30 amp.

Am I right in thinking bad selonoid or dragging starter to pull that much power? I tried just joining the wire and the genny started so you can bypass in a pinch.

 

[Eufaula]

It sounds more like the starter is pulling a heavy load, if it burned the fuse holder. I would check the eng. for any water in the cylinder or busted rings. I hope you do not have this problem. Another thing is could be a loose connection on your fuse holder. Armanture/stator could be hang up and draging. Generator are not run enough to eliminate fused rear bearings etc. Hope ist is something easy. Jimmy.

 

[Trojan]

About the only things that can cause that is loose or dirty connections or a shorted starter coil. It does not sound like low voltage. I would bet on the shorted coil. Put an amp meter on it. The starter itself does not use that fuse. Bill