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Rotating knob, right side, above carb. what does it do?

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  • Rotating knob, right side, above carb. what does it do?

    I picked up this bike used, a 2004 Road Star Classic and it has a knob on an extension and it goes down to the carb. I have to assume its for "tuning on the fly" but I haven't ever had one and wondered what it does? I will be glad to shoot a photo if that will help...?

  • #2
    Idle control knob likely.

    Comment


    • #3
      Probably the idle speed adjustment.

      Comment


      • #4
        There was an adjustment that some people added to the carb. If it's small and rubber probably that, if it's plastic and 1/2" and there is not a plastic and 1/2" at the bottom of the push rod tubes then it's probably the idle adjustment.
        It's not that life is so short, it's just that you're dead for so long.---unknown.

        Comment


        • roadiemort
          roadiemort commented
          Editing a comment
          Mike is talking about an aftermarket extended PMS screw coming out of the carb itself. The idle adjustment is on a cable and is lower under the stock air filter housing.

        • MikeyC
          MikeyC commented
          Editing a comment
          That was it! The PMS adjustment. Ya, the idle adjustment could have been moved, or maybe the choke. I moved my choke next to my idle adjustment on one of my bikes when I re-located the fuel pump.

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