Kubota B6100 no electrical power.

[bruce5781]

At my wits end on this.
My 1984 B6100 HST has no electrical power. No starter, no glow plugs, no hour meter, no lights, nothing at all.
I was mowing with it and one of the pullys on my deck messed up and I shut it down. 2 minutes later, I got on and...nothing happened when I hit the key.
Long story short, new battery, new ground, new ignition. Checking with a circuit tester, I have power to the starter, power to the ignition switch, power to several wires I have tested. Just nothing works. Turn the key and no starter or glow plugs. Leave the key on and no hour meter.
Please don't tell me to check the main fuse. I don't see that this model has one, unless it's built into the ignition switch.

I would greatly appreciate and ideas you may have.
Regards,
BruceView attachment 5766663View attachment 5766664

 

[bruce5781]

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[rScotty]

Sounds like it is either in the starter or the starter solenoid - which is the small round cannister that piggybacks onto the starter. Most starting problems that are not due to old battery or corroded ground or ignition switch are usually a problem with the solenoid not closing internally to to feed the battery power to the starter. You will usually go through two or three starter solenoids during the life of one stater.

The drawing doesn't show these details, but there is usually three terminals on the starter solenoid. One big terminal goes back to the positive on the battery, the other big terminal goes over to the starter.
The small terminal on the starter solenoid goes to the ignition switch.

You can test the starter solenoid by simply bypassing it and the ignition switch. You take one heavy battery lead - got to be heavy like a battery jumper cable - attach one end to the positive of the battery, and quickly just ap the terminal on the starter. That should cause the starter to spin, so BE SURE IT is out of gear when you do that.

Or post a photo if you are not sure.
BTW, the old style starter solenoids are easily rebuildable. Basically you disconnect the battery completely, unbolt the solenoid, disassemble, clean and file the points inside, and reassemble.
Luck,
rScotty