Kubota with an electrical problem 
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 03-31-1999, 00:00 Post: 2244
Doug Southworth



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 Kubota with an electrical problem

I have a Kubota L3250 (not exactly compact) that drains the juice out of its brand new battery if I let it sit for 3-4 weeks. Then when I try to jump it with my car, I get obvious taxing of the car motor when I turn on the glow plugs, but only a single click and then a blackout when I try to crank it. From there on, the lights don't work, and I can do anything I want with the key and I'll get no response, even with the jumper cables still hooked up. It's like there is some sort of circuit breaker. The first time I gave up and let a dealer come and start it for me. Unfortunately I wasn't there, and he said it started just fine, like I didn't have clean terminals or something. He has no incentive to help me understand the problem, in fact he stands to gain if I don't. Anyone out there who can enlighten me? Thanks much, Doug






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 04-01-1999, 00:00 Post: 2257
nb



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 Kubota with an electrical problem

Take the negetive cable off the battery and fully charge the battery. Running the new battery partially charged will quickly shorten the life of it. If you take a test light and hook it between the neg. cable and neg battery it will light if there is a draw. Disconnect things until the light goes out and that will be the circuit causing you problem. Also check your jumper cables. Cables smaller than 6 gauge will not carry enough juice to start that tractor with a completely dead battery. Also you car may not have a large enought battery to handle the ampere required. Continue to Crank the tractor with insuffient amps and you may also cause starter damage.






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 04-01-1999, 00:00 Post: 2267




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 Kubota with an electrical problem

I would also make sure the negative cable is getting good contactwhere it bolts to the chassis/frame.






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 04-01-1999, 00:00 Post: 2290




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 Kubota with an electrical problem

Thanks, gentlemen, for the helpful advice. I take it diesel motors this size need more cranking power than an ordinary car jump. Steve, I previously replaced the negative cable, and polished the connection to the crankcase pretty well, but that was no help. Doug.






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 04-02-1999, 00:00 Post: 2294




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 Kubota with an electrical problem

As steve said befor you may want to put a continuity tester between the neg cable and the battery post. My Mitsu had a drain probleme we narrowed it down to the hot wire to the light switch once I repaired it the machine starts like a champ.Until you can check it out pull the neg cable after each use this will stop the draw on the battery.Good luck Ian






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 04-02-1999, 00:00 Post: 2297




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 Kubota with an electrical problem

Thanks Ian, disconnecting the neg. after using it is a great idea. Why didn't I think of that?






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 04-02-1999, 00:00 Post: 2304




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 Kubota with an electrical problem

I can not take credit for that one!!My wife Kris suggested that I do that when I was having charge hold problumesthis heleped by not draining the battery flat (I bought 2 NOT CHEAP!!).Then my mech friend started with the continuity check he used a 25.00 radio shack unit had figured where the draw was in about 25 min.Good luck(at first he looked at the glow plug curcuit I am not sure why)Ian






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 04-03-1999, 00:00 Post: 2328




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 Kubota with an electrical problem

Thanks everyone, your advice has helped. I got it started with a new + cable, acharged battery, and a jump from my truck. I then found a .7 mA current between the - terminal and the cable which went away when I disconnected the battery fluid monitor. Only problem is, the second time this happened, I was using a new battery that didn't have a battery fluid monitor, so that couldn't explain the problem that time. I did run the glow plugs quite a while the 2nd time and the indicator light never came on. Glow plug problems wouldn't account for a slow current leak, but it seems like they could suck the battery dry pretty quickly. What's a sensible way to check glow plugs? Is there such a thing as a glow plug that works on A/C, for those of us who do a lot of winter starting?






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 05-10-1999, 00:00 Post: 3645
tim mcmahon



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 Kubota with an electrical problem

Well I have a G4200 kubota that did the same thing. turns out it was the handle that engaged the mid-mount PTO deck. I just had to pull back on it a little before i started it. Idon't know, maybe you already fixed yours. Just thought it might be helpful.






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Discussion Boards > Active Subjects > Messages as Posted > Kubota Review Forum

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6 | Doug Southworth 1 | nb 1 | tim mcmahon 1 |




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