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18hp briggs

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  • 18hp briggs

    I have a couple of questions....
    1. what is the best way to tune the briggs 18hp for higher elevations ( 9,000-10,500 ft) I live at 5500 ft and it runs great at home..

    2.what are the highest rpm's can this briggs take...I adjusted the govenor so I could get the (Oh crap power if needed) not that I plan the rev it most of the time . I do have a tach on it and plan to keep it under 4,000 rpms.

  • #2
    definately lean the mixture for thinner air at higher altitude.

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    • #3
      Talk to your local dealer and get a high altitude jet kit for it. Go in armed with the Model, Type and Code #'s from the engine.

      Governed rpm is 3600 and you will have no issues at 4000. I turn far more than that on some of my stuff and (knock on wood) have had no trouble.
      A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

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      • #4
        Racerone3,

        Thanks for the info. I have the govenor slightly modified to allow 5,500rpms. I do not plan to use that much power often, yet in a pinch I like to know it is there.

        I have checked around my local briggs dealers and they have nothing for me. Any thoughts of who might sell these high alt kits.

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        • #5
          Originally posted by turtlecrawler View Post
          Racerone3,

          Thanks for the info. I have the govenor slightly modified to allow 5,500rpms. I do not plan to use that much power often, yet in a pinch I like to know it is there.

          I have checked around my local briggs dealers and they have nothing for me. Any thoughts of who might sell these high alt kits.
          I go to parts tree.com Lawn Mower Parts, Small Engine Parts & Much More! | PartsTree.com - Briggs, MTD, Toro, Cub Cadet, Husqvarna, Troy-bilt... for all of my factory parts. They are located in texas and show pictures to ensure you can reference if you dont know what the part's name.
          HUSTLEMANIAC and a HONORARY MEMBER of the
          BIGFOOT ALUMNI

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          • #6
            fmints,

            Thank you for the web site...I know where I will be getting my parts from now. Found out though my carb does not have a fixed jet for high altitude, it is a adjustable screw just like the one for air/fuel. So I wil just have to mess with it when changing alt. Thanks again for the info.

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