Question about Kohler Electrical Supplies

2 Answers

I have a 7kw Kohler marine generator that shuts of when boat gets up on plane New impeller New fuel filter I started it runs for a while then shuts off It takes a bit to start but runs for 20 plus hrs

Posted by on


2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 2,760 Answers

Well the above logic is good , but I saw something else in your text that makes me think its a fuel delivery problem , you said above "takes a bit to get it restarted" if it was a low flow switch or circuit , it start right back up ! but if its a vapor lock or fuel starvation problem then yep it be a bit tricky to restart it !! (air in fuel) ive seen this happen on mid to large boats (diesel) seems there was a small air leak (crumpled gasket) around there fuel filters and it worked ok till engine heated up to normal temp !! then it lost fuel prime from the day tank and it be difficult to reprime it till engine cooled back down (head scratcher I know all too well) , mfg know this can happen on mobil power units so lots use a small tank (less 3 gal) between the filters and injector pumps it adds a bit of "time" in there if fuel looses its prime for a moment (rolls and swells ) so pwr unit keeps going

Posted on Oct 01, 2016

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.


    An expert that got 20 achievements.


    An expert that got 10 achievements.

  • Kohler Master
  • 53,745 Answers

I take it that this unit runs the power on board and is permanently fixed in the boat
you mention new impeller so logically that means that it is water cooled drawing the cooling water from outside (underneath the boat)
pursuing logic further if that is the case then there is a shut down circuit for the water flow to prevent overheating should the water inlet become blocked ( weeds, plastic cloth etc)
from your question and statement I would be looking in that area to make sure water flow is not restricted or the protection circuit is operational ( no corrosion in terminals and wires )

Posted on Oct 01, 2016


1 Suggested Answer

  • 2 Answers


Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

25hp Mariner ,2stroke quite old , starts and runs at low speed beautifully ,once taken up to plane the boat one cylinder tends to cut out, and once boat has slowed down the cylinder comes back to run

Older motors have two jets in the carb. A high and low speed jet. My guess is the high speed jet is clogged, and motor is trying to run on low speed jet.

Mar 06, 2018 | Boating

1 Answer

I have a Kohler Marine 4ES Generator in my 29 Foot Sea Ray and the engine keeps cycling (no load) from almost shut-down to max speed. What can this be? I have changed the Electric Fuel Pump - Fuel...

The governor and / control maybe your issue. Also if you have the electronic governor model, check the speed sensor screwed in near the fly wheel, it should have approx 2VAC on it during crank.

Jun 19, 2013 | Kohler Electrical Supplies

1 Answer


Check Fuel Pump ,
Check Breather On Tank
Fit New Spark Plugs.
Let Me Know What Happens After That!

Mar 15, 2013 | Boating

1 Answer

I have a Briggs and Stratton 7KW standby generator. I accidentally spilled some oil on it during a hurricane and cleaned it. However, when I try to start it, it will go on for about 15 seconds and then...

sounds more like a fuel problem not oil being spilled on it but check the oil level some have a low oil shut off see if you can keep it running spraying carb cleaner in the air filter that will tell you if it is a fuel problem more so a fuel problem if you left fuel in it for more than 30 days

Aug 14, 2012 | Briggs & Stratton 15,000 Watt Home Standby...

1 Answer

Kohler marine generator troubleshooting

I have a kohler marine generator that shuts down when it reaches operating temp of 200/210 degrees. It runs for about 5 minutes. Already replaced impella and have sea water pumping through, coolant level is good. Any suggestions? Thanks

May 02, 2012 | Electrical Supplies

1 Answer

Kohler boat genny surges

Check fuel supply, carb etc

Feb 05, 2012 | Kohler Electrical Supplies

1 Answer

Kohler 5E, initially water pump impeller no good causing overheat and shut down of motor (overheat switch killed ignition), replaced raw water pump impeller, heat exchanger stays cool, exhaust manifold...

You did not say what fuel you running the motor on??? It sounds like it may be LPG or Propane.... is so then it seems as though you do not have enough surface for evaporation...


Jun 13, 2011 | Kohler Electrical Supplies

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.

May 26, 2010 | Kohler Electrical Supplies

Not finding what you are looking for?
Electrical Supplies Logo

Related Topics:

259 people viewed this question

Ask a Question

Usually answered in minutes!

Top Kohler Electrical Supplies Experts

Sheldon Dedek

Level 3 Expert

909 Answers


Level 2 Expert

158 Answers

J. Bradshaw

Level 2 Expert

121 Answers

Are you a Kohler Electrical Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides