Question about Kohler CH25 PA-CH730-0040 Command Gasoline Engine

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Kohler ch20s will crank but won't run

I checked the fuel filter it cranks only when fully choked then starts to rev up an then dies

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

barterjoe
  • 338 Answers

SOURCE: kohler ch20s - The engine back fires through the

Yes it could be timing except for the fact that the dipstick is blowing out. I would look at one of two things. 1. the head gasket is blown internally allowing for compression to bypass into the oil sump. or 2. the rings are worn out or on wrong allowing the compression to leak into the oil sump
If you take it to a good dealer like www.arcolawn.com they can perform a leakdown test and tell you very quickly what the problem is.
It might be worth purchasing a couple head gaskets and check. good luck
Joe

Posted on Feb 15, 2011

  • 408 Answers

SOURCE: kohler 12.5 motor starts then the longer it runs

Sounds to me like it is time for a carb kit and tune-up.

Posted on May 04, 2009

  • 135 Answers

SOURCE: engine revs up and down, improves when choking half way

Sounds like to me that your governor may need to be adjusted. Too much detail to explain here as to how to do it.

A dealers technician can fix that in 5 minutes if he knows what he's doing.

Posted on Oct 28, 2009

lindsay836
  • 677 Answers

SOURCE: Kohler CH20S losing power, blowing black smoke and oil

Sounds like engine is flodding. Have carb float checked, make sure it is at the correct height

Posted on Feb 04, 2010

  • 905 Answers

SOURCE: Kohler 17.5 command. will not start

The woodruff / flywheel key is likely partially sheared. Pull off the air housing, remove the starting clutch, to get to where you can see the flywheel key. I bet you will find that the key has distorted. Easily replaced once flywheel is pulled. Make sure to use the correct key when replacing it.

Posted on Jun 12, 2010

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I would check the jetting by the color of the plug. If it's black, go smaller main. If it's white, go larger on the main. If jetting won't cure it, it probably has a crank seal out. My kid used to race these, and he blew out a crank seal trying to start it with the wash plug in the exhaust. Did the same thing as you're describing. Good luck!

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1 Answer

Will crank but won't run


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