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Troubleshoot your MTD Mower >

Troubleshoot your Kohler Command Pro Engine

June 10th, 2017 at 9:37 pm

Many of your outdoor power equipment tools are powered by a reliable Kohler engine. On the occasion you find your Kohler engine performing less than optimally, use our troubleshooting guide to diagnose the issue at home. If you need to lookup a replacement part or schedule service for your Kohler engine, contact one of our trained specialists.

If your engine won't start at all, it may be that you have:

no fuel or improper fuel
a contaminated fuel line (with dust or dirt)
incorrect oil level
overloaded engine
dirty air cleaner
faulty spark plug

If your engine has difficulty starting, it might be:

improper fuel
a contaminated fuel line (dust or dirt)
incorrect oil level
overloaded engine
dirty air cleaner
faulty spark plug

If the engine stops suddenly, it may be:

no fuel in the tank
a contaminated fuel line (dust or dirt)
dirty debris screen
incorrect oil level
overloaded engine
dirty air cleaner
faulty spark plug

If the engine seems to lack power:

improper fuel is in the tank
a contaminated fuel line
a dirty debris screen
incorrect oil level
overloaded engine
dirty air cleaner
faulty spark plug

If the engine is operating erratically:

improper fuel is in the tank
a contaminated fuel line (dust or dirt)
dirty debris screen
overloaded engine
dirty air cleaner
faulty spark plug

Do you hear the engine knocking or pinging?

improper fuel
dirty debris screen
overloaded engine
faulty spark plug

If the engine is misfiring or skipping:

improper fuel is in the tank
a contaminated fuel line (dirt or dust)
dirty debris screen
dirty air cleaner
faulty spark plug

If the engine backfires:

improper fuel
a contaminated fuel line (dirt or dust)
overloaded engine
dirty air cleaner
faulty spark plug

If you find the engine overheating:

improper fuel is in the tank
a contaminated fuel line (dust or dirt)
dirty debris screen
incorrect oil level
overloaded engine
dirty air cleaner

Does your engine seem to have a high fuel consumption?

overloaded engine
dirty air cleaner
faulty spark plug

Posted in How To by kelsey lepperd

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Wilbur E Haggerty says:

August 21st, 2017 at 5:30 pm

Mower is only firing on one cylinder most of the time. Sometimes it fires on both cylinders for a few minutes and then goes back to firing on only one cylinder. Put in new plugs. Did not change the situation. Could a valve be sticking? Is this an electrical problem? Could the spark plug wires be causing this? Thanks for any help. I am NOT a mechanic!

Dick Phillips says:

December 5th, 2018 at 1:45 pm

Having a very dificult time finding a service and owners manual for a Kohler ECV749-3022, 29 hp. All I can find is the ECV749 26.5 hp. This engine was built 07/11/2013. Kohler web does not list the manual ECV749-3022.

Any help Would be greatly appriciated.

Very Best Regards,

Dick Phillips

jeff bailey says:

July 27th, 2019 at 12:20 pm

cub cadet lt 1050 with kohler command cv730s. Oil is running into exaust on one side and leaking oil from where the exuast tube mounts to the head. also getting milky oil in valve cover

Patsy Harris says:

April 23rd, 2020 at 10:19 pm

My husband has a mower with a kohler engine and it will crank but it runs alittle while u cut it off and it want crank again until it cools off what could be wrong?

Ken summersgill says:

May 7th, 2020 at 4:58 pm

25 h/p command Blows A lot of White smoke at first after sitting for a few days. Very strong smell of oil. It's only two years old Maybe 300 hours on it.i was told the valve seals need to be replaced. 😡

Clabough Michelle says:

May 30th, 2020 at 6:45 pm

We have a Kohler pro 23 and it will star but when you release the brake, it stops. It will run while idling but stops when you try to mow. We have replaced the switches. Any help?

keith damore says:

July 13th, 2020 at 2:23 pm

Kohler CV15S (older model) recently did head gasket and cleaned the valves and piston at that time. Before and after the fix, the issue is when I connect the Valve Cover breather to the carb, the engine starts to cough a little bit at bothe low and high RPM. Runs fine when not connected. Seems a lot of pressure coming out of the breather tube

Travis E. Benford says:

August 28th, 2020 at 3:38 pm

Aug. 28, 2020

I have a Koher 429 cc Command PRO EFI engine on an American Landmaster UTV. It has been in service for about 8 weeks. The issue occures during acceleration. Eventhough the engine starts quickley and runs while idiling, the engine starts misfiring at mid and high RPM. If it seems to loose power after about 15 minutes run time and when the full gear box engament occurs. The enging has clean oil. The level is normal using the dipstick. Sofe, sooty, blach deposites can be seeing on the spark plug.

Please help

Travis Benford

Jack thomas says:

September 2nd, 2020 at 10:58 pm

I'm having a problem with my Kohler command 13 upon starting engine it revs very high and moving throttle lever has no effect. I checked the throttle cable and it is connected and moving freeely

steve howser says:

July 13th, 2022 at 8:51 am

26 HP Kohler Courage motor. I shut it off after mowing and went to start it back up a few minutes later it wouldn't start. I jumped it and it started right back up but when I unlooked the jumpers it died. I jumped it again and the same thing it will only stay running with the jumpers hooked up.

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