Go BottomKubota with an electrical problem
 | Doug Southworth
Join Date: Posts: 1 
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1999-03-31 2244
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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| nb
Join Date: Posts: 1
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1999-04-01 2257
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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Join Date: Aug 2017 Posts: 0
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1999-04-01 2267
I would also make sure the negative cable is getting good contactwhere it bolts to the chassis/frame. ....
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Join Date: Aug 2017 Posts: 0
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1999-04-01 2290
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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Join Date: Aug 2017 Posts: 0
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1999-04-02 2294
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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Join Date: Aug 2017 Posts: 0
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1999-04-02 2297
Thanks Ian, disconnecting the neg. after using it is a great idea. Why didn't I think of that? ....
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Join Date: Aug 2017 Posts: 0
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1999-04-02 2304
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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Join Date: Aug 2017 Posts: 0
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1999-04-03 2328
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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| tim mcmahon
Join Date: Posts: 1
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1999-05-10 3645
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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