johnson 1963 JW18R

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  • September 1, 2021 at 12:14 pm #245910
    mrhabitat
    Participant

      What is the purpose of the red flagged adjustment next to the choke?

      September 1, 2021 at 12:18 pm #245911
      dave-bernard
      Participant

        US Member

        Idle adjustment needle ? if it what I am thinking. got pic?

        September 2, 2021 at 11:46 am #245958
        seakaye12
        Participant

          US Member

          Yes as Dave suggests….that is a slow-speed fuel mixture adjustment. Start with it appx 1.5 turns out from GENTLY SEATED. With the engine running slow….gradually turn the knob in until the best running is achieved. Only works on the slow speed. Your engine has a fixed high speed jet.

          Turning clockwise gets you a leaner mix; turning counter-clockwise it gets richer. Once it’s set you can pretty much forget it’s there.

          JW18R

          • This reply was modified 3 years, 5 months ago by seakaye12.
          • This reply was modified 3 years, 5 months ago by seakaye12.
          • This reply was modified 3 years, 5 months ago by seakaye12.
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