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Kohler Command 20HP head gasket repair

Discussion in 'Mechanic and Repair' started by mcambrose, Jan 28, 2008.

  1. mcambrose

    mcambrose LawnSite Senior Member
    Messages: 518

    Does anyone know where I can get instructions on head gasket replacement for Command 20 twin without buying a repair manual?

    I need to know the recommended tightening sequence and the recommended torque settings and any other important information.

    The kohler tech rep suggested retorquing the bolts after it has run a few hours. He said just to remove the OHV cover to retorque.

  2. lucforce

    lucforce LawnSite Member
    Messages: 223

    I quit "re torquing" those head bolts long ago. I checked them for years after an install while they were playing with the head gasket construction, but they never need tightening after a run. So, I stopped checking. I stand by the idea that these gaskets fail due to improper fastener torque-largely at the factory. I have seen some individuals never able to seal a set of heads after multiple attempts. I have never had a set that I repaired fail.

    I believe that Kohler will let you download the manuals.
  3. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

  4. mcambrose

    mcambrose LawnSite Senior Member
    Messages: 518

    You had previously sent me the link to the kohler site for parts lookup (which I use often), but I didn't have the site for service informaiton. This is really helpful. Thanks very much. I downloaded the manual to my computer at home and work, so I can find it either place.
  5. Indy Kyle

    Indy Kyle LawnSite Member
    Messages: 157

    Tourque settings are over-rated.

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