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Walker backfire

Discussion in 'Lawn Mowing' started by nlminc, Feb 21, 2000.

  1. Hello:<p> The Kohler is famous for this & they were that way 15 years ago. Even the 2 cylinder engines.<p> Lower your idle speed & adjust low speed mixture screw. The problem will be gone 99 out of a 100 times. If this is done properly & still have problems its time for a valve job!<p> I wouldn't advise shutting one off at no other speed than idle for at least 30 seconds min. Also when engine is idleing it will over heat, if let run long enough burn up engine. <p> Thats why they are called air cooled engines. The engines run best & cooler at full throttle & last longer.<p> <p>----------<br>GrassMaster - Have a nice day!!!!! Home: http://www.lawnservicing.com<br>Visit my browser Start Up Page http://www.lawnservicing.com/startup/

    KUTTERS LawnSite Member
    Posts: 23

    We had the same problems with our 22hp Kohler command on an excel. I agree with homer and Grassmaster. We let ours idle for a minute before shutting down, if not it will backfire.
  3. gene gls

    gene gls LawnSite Gold Member
    Posts: 3,213

    Why in the world would anyone shut off a hot engin with out letting it cool down. I let mine idle while I do the trimming.
  4. Retro67

    Retro67 Banned
    Posts: 207

    Gene-<p>The faster the engine runs, the cooler. I think you are doing exactly the opposite of your intentions by letting your engine idle. &lt;p&gt;&gt;John
  5. cantoo

    cantoo LawnSite Silver Member
    Posts: 2,910

    My manual says to shut down my 20hp command at 1/2 throttle. Simple, just let the engine get down to 1/2 throttle before you shut off the key.

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