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  • #1

    Diaphragm Assembly

    Possible stupid question. I finished rebuilding my carbs and am getting ready to put them back in. The bike wasn’t running when I got it so I’m not sure if it had a diaphragm assembly or not. I didn’t remove one and I can’t seem to find it on the bike. Is there a way for the carbs to operate correctly without one?

    Thanks,
    Jason
    79 XS 1100 F I call her trouble but she's almost tamed
    Tags: None
  • #2
    Are you talking about the octy? Only the specials had that, don't know what you have though.

    It is completely unnecessary though. Lots just ditch the thing anyways.
    Nathan
    KD9ARL

    μολὼν λαβέ

    1978 XS1100E
    K&N Filter
    #45 pilot Jet, #137.5 Main Jet
    OEM Exhaust
    ATK Fork Brace
    LED Dash lights
    Ammeter, Oil Pressure, Oil Temp, and Volt Meters
    Green Monster Coils
    SS Brake Lines
    Vision 550 Auto Tensioner

    In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

    Theodore Roosevelt

    Comment

    • #3
      Yes sir, the octy. Thanks for the quick reply it was driving me crazy because I couldn't find it. Mine is a standard.

      j
      79 XS 1100 F I call her trouble but she's almost tamed

      Comment

      • #4
        Which model bike do you have? The standards didn't have the octy, the Specials did...

        Yes, the Special will work without one. Post your bike year/model in your signature, it helps.
        Fast, Cheap, Reliable... Pick any two

        '78E original owner - resto project
        '78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
        '82 XJ rebuild project
        '80SG restified, red SOLD
        '79F parts...
        '81H more parts...

        Other current bikes:
        '93 XL1200 Anniversary Sportster 85RWHP
        '86 XL883/1200 Chopper
        '82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project
        Cage: '13 Mustang GT/CS with a few 'custom' touches
        Yep, can't leave nuthin' alone...

        Comment

        • #5
          Well since you have a standard the petcocks are already vacuum operated so they take the place of the octy, and they are much cleaner looking too!
          Nathan
          KD9ARL

          μολὼν λαβέ

          1978 XS1100E
          K&N Filter
          #45 pilot Jet, #137.5 Main Jet
          OEM Exhaust
          ATK Fork Brace
          LED Dash lights
          Ammeter, Oil Pressure, Oil Temp, and Volt Meters
          Green Monster Coils
          SS Brake Lines
          Vision 550 Auto Tensioner

          In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

          Theodore Roosevelt

          Comment

          • #6
            Thanks again Nate, and Steve I modified my sig line to show model. Now to sync the carbs, bleed the brakes, change the fluids and ready to go. Oh ya and clean the gas tank.
            Last edited by CoastRider; 07-06-2012, 04:40 PM.
            79 XS 1100 F I call her trouble but she's almost tamed

            Comment

            • #7
              Jason,

              Instead of one vacuum valve (octy), you get two! With regular use, they are very little trouble.
              Marty (in Mississippi)
              XS1100SG
              XS650SK
              XS650SH
              XS650G
              XS6502F
              XS650E

              Comment

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