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

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I have a Vermeer 625 chipper with Kohler Command Pro 25 engine (CH730-0019). This unit has a speed sensor to regulate the hydraulic auto feed. The sensor assembly mounts to one of the ignition coils and picks up off the flywheel teeth. This doesnt seem to be working and I am wondering how to test the sensor.

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  • suzie40cycle Feb 20, 2011

    Hey Ken,
    I wish I could help but i have the same issue with my Bear Cat 5" pto chipper. Is there anyone out there with a generic solution??? I'm sure we would both be very grateful for your advice.



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Posted on Jan 02, 2017

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SOURCE: Kohler Command 12.5 OHV (starter?)

You should properly test the battery. A dead cell in a battery will absorb the current that you are trying to supply by jumping.

There may be a fault in the wiring system, thus not allowing enough current to properly supply the starter. Construct a way to temp. connect the positive jumper cable lead to the tractors battery cable connection on the starter that will not short circuit and connect the other poss. end to your trucks poss.battery terminal and then connect the ground lead as normal but to the tractors frame, then attempt to start. If this allows the starter to operate properly then disconnect your jumpers and Inspect the positive and ground wires for insulation cracks, blisters and corrosion. Also check the connections for being clean and tight.

You could also remove the spark plugs ( to release compression that will allow the engine spin free) to see if the starter will then turn the engine.

If all fails, sorry to say, your starter may be weak and in need of replacement.

Good luck

Posted on Mar 26, 2009

  • 1036 Answers

SOURCE: JD LX173, Kohler Command OHV Engine keeps droping mounting bolt

Use a thread locking compound on the bolts - and torque them to the correct spec.
This will prevent them shaking out.

Posted on Sep 08, 2009

  • 148 Answers

SOURCE: when does 25 command kohler fire on magnet

It fires when the left edge of the magnet is precisely aligned with the left edge of the left leg of each coil. (When viewed from the flywheel and looking straight on at the coils.)

Hope this helps,

Posted on Oct 16, 2009

Testimonial: "This answer was most helpful. Thanks very much."

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SOURCE: We are replacing head gaskets

first torque to 16ft/lbs in a x patt. then 30ft/lbs in a x patt. for head the intake gaskets connecting to the head should be 12 to 17

Posted on Mar 09, 2011

  • 1 Answer

SOURCE: Kohler small engine problem

1989 Kohler 20 backfires through the exhaust. What are the possible causes?

Posted on Jun 11, 2011

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The auto feed on a 625 works then it dont, I

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3 Answers


if you go on you can request a new manual and they will send it out to you.

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