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Kohler 2007/2008 5ecd uu code
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Author:  bobre [ Sun Aug 23, 2015 11:52 am ]
Post subject:  Kohler 2007/2008 5ecd uu code

I have a 2008 V318 with a Kohler 5ecd, it is throwing a UU code about 5 to 10 seconds after it starts, and then shuts down. I have shut all breakers off and then reset them, and also rest the main generator control. Has anyone had this problem? The generator only has 53hrs. on it.

Author:  firecadet613 [ Sun Aug 23, 2015 2:11 pm ]
Post subject:  Re: Kohler 2007/2008 5ecd uu code

I've fixed this by killing the batteries for a few minutes...but you have to shut down the mains first. Could be caused by a lack of water flow....hope it's something simple and this works!

Also - give it a good once over for loose connections - Fuel pump relay, etc.

Author:  bobre [ Tue Aug 25, 2015 7:44 pm ]
Post subject:  Re: Kohler 2007/2008 5ecd uu code

Ok, that didn't work, also changed the spark plugs, motor runs good for approximately 10 seconds, UU code starts flashing and then the motor shuts down. Puzzled.

Author:  firecadet613 [ Tue Aug 25, 2015 8:10 pm ]
Post subject:  Re: Kohler 2007/2008 5ecd uu code

Good water flow?

Author:  bobre [ Tue Aug 25, 2015 9:12 pm ]
Post subject:  Re: Kohler 2007/2008 5ecd uu code

Yes, changed the impeller the other day.

Author:  jsimon [ Wed Aug 26, 2015 4:56 am ]
Post subject:  Re: Kohler 2007/2008 5ecd uu code

It has been a couple years now so my memory is fading, but I had more generator issues on my 318. I had it pulled twice, 2 years in a row which meant pulling the starboard engine each time. The first year it was an oil leak on the front main seal, it was installed crooked from the factory.

The next season I didn't have any oil leak, but it developed a no start issue, it would start 1 day and seem to run fine, the next day it would crank, 3 or 5 times then fault out, I would reset and try again to no avail. One week, after not starting on the weekend, I had my wife stop at the boat everyday and try and start the dang thing. Monday - Thursday it started each time. Only running a few minutes, Friday when we got to the boat it wouldn't start and didn't all weekend

I forgot what codes I was getting, but had both fuel pumps, the injector and the anti siphon valve changed, nothing. Finally over the next winter they pulled it again and pulled the heads off the engine. Burnt valves and valve seats. They replaced the valves and had the heads machined and the damn thing purred like a kitten after that. There is a maintenance point about checking adjustment on the vales I believe at 500 hours. I didn't have near that on it.

From what I've been reading online, it appears kohler may have had issues with the Kawasaki motor in that model.

I hope yours doesn't have the same issue, but a compression check will tell the story.

Also while I had it out the second time, I had them cut an access hatch in the bulkhead. It was a sealed hatch behind the upholstered panel in the aft. Made it way easier to change plugs, and if a starter had to be replaced you don't have to pull the generator to get to it.

From what I see the uu code is an under voltage code, which stands to reason if the motor won't come upto speed.

Good luck

Author:  bobre [ Wed Aug 26, 2015 6:32 pm ]
Post subject:  Re: Kohler 2007/2008 5ecd uu code

Jeff,
The motor starts and runs fine, I do not think it is a motor problem but more of an electrical or safety switch problem.

Author:  jsimon [ Wed Aug 26, 2015 9:44 pm ]
Post subject:  Re: Kohler 2007/2008 5ecd uu code

Lol, sorry. Just reading your post had my mind wandering to my problem. I mistook it for a no start issue.

Well maybe my long winded post will help someone else :D

Author:  bobre [ Sun Sep 13, 2015 8:01 pm ]
Post subject:  Re: Kohler 2007/2008 5ecd uu code

Ok, I called a Kohler repair service, he has checked it out and says that the stator has a winding that is not producing electricity. Awful funny the unit only has 53 hours on it and the stator is burned out. The estimate to repair it is quite high as he says he has to pull the generator out to do the work. I am going to call Kohler to see what they say. Just seems you should get many more hours than that.

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