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I have a Kohler 4cm21 K321EP generator that had ran out of oil. I refilled it, but now it will not start. Pressing the start button only gives a thump sound. What can I do to get it to start again?

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You ran it without oil it sounds like the engine is locked up. when your run with no oil the engine parts go dry and get hot and damage to engine is result. You most likely will have to rebuild the engine or get a replacement engine.

Posted on May 11, 2014

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  • allen May 13, 2014

    is their anyother possibilities, like a fuse or switch?

  • william rodriguez May 13, 2014

    i dont have any on mine but everyone is different.. whem it ran out of oil did it stop the engine and did u see any smoke?

  • allen May 14, 2014

    hi William, i'm assuming it ran out of oil and not gas, cause I heard a low sound and I went to hit the stop switch, it would'nt stop. then it just stopped on it's on. there was no smoke. I check the oil and it was out.


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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

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SOURCE: Ejecting oil

More than likely it came out of the crank case vent. Your intake valve could have been stuck open (for some reason) which pressurized the crank case.

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You have to reset it because it locked out on on under frequency. Just pullout the fuse on the control panel and then reinstall it a couple of seconds later. Now it will reset the fault codes. Hope that helps.

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SOURCE: my kohler 5000 generator will not run unless I keep the starter button depressed

First thing to do is get a "Wiring Diagram" for your Unit.
Once you get the diagram, just Follow the DC Ignition Power path from
the Battery, on thru to the Ignition Coil. Somewhere you aren't getting
12Vdc to the Ignition Coil, UNLESS the Start Switch is in the Start Position. It shouldn't take longer than about a hour, with a VoltMeter to find where the circuit isn't being "Made", and fixing or replacing that part. More solutions to different engine and generator problems at and

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