Question about Kohler Electrical Supplies

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My kohler 5e marine generator only runs when I hold the start button and only produces about 12vac. Is this a quick fix?

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  • 23 Answers

Sounds Like possibly the regulator is the issue.
Flightsystems Can test these to see if it is good or not.
also here is a link for the service manual
https://us.v-cdn.net/5020499/uploads/editor/0c/g1lx13xi2vyy.pdf

Posted on Apr 16, 2019

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Posted on Jan 02, 2017

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SOURCE: Yamaha ef1000 will only idle and produce 12 vac

Hi, I have the same generator and I pull the load and it is fine. The engine RPM is controlled by the 
governor. The voltage will not come up until the RPM is at full. First see what the RPM problem is and then check the voltage. Open the cover and look to see if the carb linkage is hooked up , if it is you mite have carb problem and address that first. Hope that helps.  

Posted on Dec 19, 2008

mamicheddy
  • 79 Answers

SOURCE: Hello, I have a Kohler Marine Generator that says OC on the menu when I try to start it. Any ideas?

OC stands for Over Crank. How long does it take before the genset starts?

Posted on May 07, 2009

  • 5603 Answers

SOURCE: kohler confidant 4 generator service manual and wiring diagram

First thing is to check oil level as low oil pressure will shut it down.

Posted on Aug 11, 2009

  • 909 Answers

SOURCE: 1975, 7.5 Kohler marine genset, runs only with the reset depresed

Can't search for a manual without model, type, serial, etc numbers...

A few things to take a look at:

1) Oil level / pressure sending unit. This is normally bypassed as long as the start switch is pressed. When engine starts, and switch is released, engine will die if sending unit is defective, or you are low on oil.

2) Exhaust temperature sensors. Older units were notorious for burning these up.

3) Cooling Water Temperature sensor. These cause trouble often, but mostly due to water pump impeller being eaten away by galvanic action and not able to pump water as effecively. End result is water temp higher than normal, which trips the switch, which kills the engine.

4) Alternator (generator) output not as it should. If output doesn't rise to proper level within a few seconds of engine start, the engine will be shut down.

5) Choke not working as it should

6) Bad fuel, bad fuel pump, clogged fuel filter.

Posted on Jun 12, 2010

  • 142 Answers

SOURCE: Kohler 5E generator on my boat got wet there is no

  1. First you must clean it all, especialy the generator, windings, AVR etc. if it was wet with sea water (better do it with fresh water or electro-clean, than other liquids). Then you should dry it well (with a hot blower) for about, but not less than 24 hours, before starting.
  2. If you already started it wet, or it got wet while running, you may have some parts burned, with low insulation of cables, windings etc. Check the AVR, rings and brushes (if any) and other electronic boards for visualy burned elements or check the semiconductor elements (diodes and transistors) for proper qualities.
  3. You should check the gen. windings insulation resistence to hull (gen. iron) [all stator and rotor windings]. It should be more than 100 kOhm in order to let you start the generator motor.
  4. When dry and clean, with no burned elements you can start the engine. If it reaches its normal speed - measure the voltage on generator terminals, if it is OK check the connections (breakers, fuses) to the distribution panel. If it is very low under 30 V AC, the problem may be in AVR (Auto Voltage Reg. - Field DC supply)
  5. If the voltage is under 10 V AC, you may need to recharge the magnetic field with a 12 V battery connected shortly to field terminals - +/- respected.
If you fulfil these instructions and you need more help, please ask as an answer to this solution or on my e-mail: parlapanov@yahoo.com.
Please give some information about your generator: is it 5ECD, 5EKD or some other - then give some more details about it.

Posted on Jul 26, 2010

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I have a kohler 5E marine generator It will blow the input fuse when cranking. If the voltage regulator is disconnected it will start but only run if the start switch is pressed. Any Ideas?


I have the same genset. Just fixed a similar prob with it. Mine would intermittently blow fuses at first then started blowing them as soon as trying to start. I also saw a puff of smoke from reg when it did run at one point. Carefully check stator wires for shorts to ground. Make sure to lift the stator wires that are grounded in control box. If no grounds replace control board and reg board. $400+. Cross your fingers and try it. Mine worked, thank God. The pc boards are marginally designed and built. The relays, diodes and other componants are way too undersized for the application and can not survive a lot of cycling
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1 Answer

1975, 7.5 Kohler marine genset, runs only with the reset depresed


Can't search for a manual without model, type, serial, etc numbers...

A few things to take a look at:

1) Oil level / pressure sending unit. This is normally bypassed as long as the start switch is pressed. When engine starts, and switch is released, engine will die if sending unit is defective, or you are low on oil.

2) Exhaust temperature sensors. Older units were notorious for burning these up.

3) Cooling Water Temperature sensor. These cause trouble often, but mostly due to water pump impeller being eaten away by galvanic action and not able to pump water as effecively. End result is water temp higher than normal, which trips the switch, which kills the engine.

4) Alternator (generator) output not as it should. If output doesn't rise to proper level within a few seconds of engine start, the engine will be shut down.

5) Choke not working as it should

6) Bad fuel, bad fuel pump, clogged fuel filter.

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Kohler confidant 4 generator service manual and wiring diagram


First thing is to check oil level as low oil pressure will shut it down.

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Hello, I have a Kohler Marine Generator that says OC on the menu when I try to start it. Any ideas?


OC stands for Over Crank. How long does it take before the genset starts?

Apr 20, 2009 | Electrical Supplies

2 Answers

Schematic


I looked for several minutes and this is what I found:

Kohler 13EOZD wiring diagram

I went to the Kohler site, entered the number and it cross referenced to the above number. The wiring diagram is on page 90.

Hope this helps!

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