Situation Report.
After running for a couple of hours checking the temp, I turned it off, then I decided to wash it. I got out the pressure washer and then needed to move it to a better location. I had trouble getting it started, no click, no nothing, after multiple attempts, it turned over and started. I left it running, washed it, then pulled it into barn and parked it. It would not start again. Tried the next couple of days, after cleaning battery posts, still nothing. The electrical system is pretty corroded. It has 3 Buss circuit breakers instead of fuses. 2 20amp and 1 30 amp. They reset automatically, unless you really blow them hard, IIRC. The threaded posts were so rusted, they broke instead of coming off.
Amazon.com: Bussmann CBC-20HB Circuit Breaker (Type I Heavy Duty Automotive with Stud Terminals and Bracket - 20 A), 1 Pack: Car Electronics
I replaced all 3, putting some dielectric grease on the posts, and cleaning the terminals. I also took out the keyed ignition switch, checked it, cleaned and re-tapped the holes where you attach the wires. Putting everything back together, I put the battery ground back on, and she fired right up. I also put in a new glow plug. The one closest to the radiator was bad.
So I'm still happy.
New running total:
$30 for the 3 new Bussman circuit breakers
$21 New NGK glowplug, correct for Kubota D905
Amazon.com: NGK YE01 SPARK PLUG: Automotive
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$299 Oh my, almost up to $300 LOL.
I have to say, I love this thing. It still needs a hydraulic fluid/filter change. That's next.