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How to install/wire starter relay gm50772 in kohler 12RES generator

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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aguywithfeet
  • 20 Answers

SOURCE: Electrical cable size requirement

This is an answer to your question only. The safest thing to do is hire an electrician to do it. There may be factors you don't recgonize that a skilled eye would pick up on.

The proper size wire is #4 copper or #3 Aluminum. THHN is the most common and most versatile type in conduit. a #6 ground wire is ok. Stranded pulls a lot easier than solid and do yourself a favor and buy some wire pulling lubricant just in case.
Make sure to obey all manufacturer's instructions. If you use aluminum make sure to place anti-oxidation compound or Nolox on your lugs in the panel. Please write back with anymore questions.

Posted on Apr 02, 2009

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  • 27 Answers

SOURCE: Kohler 12res AC breaker flipping with no error listed

wat size c/breaker
6600 divide 240 = amp
rule of thumb

Posted on Sep 06, 2009

wglisk
  • 2 Answers

SOURCE: Can some one tell me what oil and air filter to

Kohler Model 12RES generator manual calls for use of synthetic oil (Mobil 1 or equivalent) as follows: If temperature is normally above 0 degrees F, use 10W30. If temp. is normally below 32 degrees F, use 5W20 or 5W30. NAPA Auto Parts recommends their #1056 oil filter for the 12RES.

Posted on Sep 06, 2012

  • 12 Answers

SOURCE: Kohler 12RES only starts on second try

Check gas pressure. Oc is over crank. Means tried to start but did not.

Posted on Nov 29, 2012

  • 12 Answers

SOURCE: I have a Kohler 12RES, 12.5kw genset. Less than a

Replace mag pick up. Cranking voltage on the MPU should be at least 2 volts AC. Normally MPU goes out.

Posted on Nov 29, 2012

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2 Answers

The starter on the 12res Kohler generator just hums (spinning sound). It doesn't engage the flywheel. Do I need a new starter?


OC is over crank failed to start. It will normally try 3 times before giving this error. You need to disconnect the battery and remove the starter motor, make sure it is free to move / spin. Either the starter has seized or the engine has siezed. Make sure the engine is free to rotate also, once you remove the starter you will see the engine flywheel there, removing the spark plugs will make it easier to rotate the engine. I would guess it is more the starter.

Jan 06, 2014 | Kohler 12 kW Emergency Power System -...

1 Answer

12RES alternator


There MUST be a generator attached to the engine of your genset to recharge the battery as starting current greatly reduces the charge of the battery. The solar panel was designed to "trickle" the battery to keep the battery "fresh".

Dec 24, 2012 | Kohler 12 kW Emergency Power System -...

1 Answer

Kohler 12RES only starts on second try


Check gas pressure. Oc is over crank. Means tried to start but did not.

Nov 25, 2012 | Kohler 12 kW Emergency Power System -...

1 Answer

Kohler 12 RES - Unit fails to start occasionally. Attempting a manual start by placing switch in run position, cause a loud click, but no cranking. The panel says CC. This morning I put a jump start...


I finally solved the intermittant starting problem on my Kohler 12 RES by replacing the strater and the starter relay. I was also experiencing the occassional OC indication, red blinking LEDs on the ATS, and intermittent non-starts during the weekly exercises. The problem happened during power outages a couple times also. If I flipped the start switch between auto and run quickly the generator would occasionally start. Once started, the generator runs fine. I ordered a new starter, which included the starter solenoid. By the way, don't worry about the genuine part thing..the old starter was a Delco made overseas. I ordered a new starter online for $85 (6744N) and it was indentical to the genuine Kohler starter. Replaced the starter and it improved the problem but did not totally solve the intermittent starting. Ordered the starter relay (GM49746) replaced it and the problem is solved.

May 09, 2012 | Kohler 12 kW Emergency Power System -...

1 Answer

Kohler 12K RES where are links for the installation /setup of the controller? thanks


The 12RESL has no user setup. That's part of lower cost on the DC 2200 controller versus an ADC 2100 or ADC-RES controller that came with the 12 / 17 / 18 RES models. Here is a link for the ADC 2100 Operation / Installtion manual though. http://www.scribd.com/doc/60318571/Kohler-8-5-12RES-Install

Sep 14, 2011 | Kohler 12 kW Emergency Power System -...

2 Answers

Can some one tell me what oil and air filter to buy for a Kohler 12res LPG generator?


Lowes sells air filters for Kohler engines . As far as the oil a SEA 30 or 10w 30 would be fine.

Dec 01, 2010 | Kohler 12 kW Emergency Power System -...

2 Answers

Have Kohler 12RES. Gives a CC1 code thenan OC code. Have checked out the starter, it's OK, have cleaned all ground cables and connections and had the battery tested it's OK. Where do I go next?


check your load wires there probaly reversed. I had the same problem friday. The week before the electrican wired it. did the same cc1 then oc. had a generator company come out it was the wireing. my load and netural were reversed.

Sep 07, 2010 | Kohler 12 kW Emergency Power System -...

2 Answers

I have a Kohler 12RESM1 propane generator with oc/uu code


U need to make sure that the relay driving ur auto start stay closed all thru the crank cycle.

Feb 04, 2010 | Kohler 12 kW Emergency Power System -...

1 Answer

Kohler Confident 7 model 7CCKM22 generator


sounds like a relay should be latching one it has started

Feb 04, 2010 | Kohler 12 kW Emergency Power System -...

1 Answer

Kohler 12res AC breaker flipping with no error listed


wat size c/breaker
6600 divide 240 = amp
rule of thumb

Aug 16, 2009 | Kohler 12 kW Emergency Power System -...

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