Pilot Fuel Screws

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  • 78550GS
    • Feb 2026

    #1

    Pilot Fuel Screws

    I was wondering if anyone has had to remove the pilot fuel screw tip from their carbs. I need a safe way to remove broken tips from the carb body.

    78 gs550. Stock VM 22's.

    Also, a source to replace the broken screws would be helpful.


    I have already tried to remove the tips with a small pick and a welder tip cleaner. I'm trying not to damage the holes or the seats.
  • Nessism
    Forum LongTimer
    GSResource Superstar
    Past Site Supporter
    Super Site Supporter
    • Mar 2006
    • 35790
    • Torrance, CA

    #2
    Z1 Enterprises for the screws and a sharp awl punching from inside the carb throat to push back the tips. If you search the archives there is a nice thread where someone posted photos of the removal process.
    Ed

    To measure is to know.

    Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

    Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

    Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

    KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

    Comment

    • 78550GS

      #3
      Z1 only has the screws for the vm 24's and up listed. The ones listed are different from what I have and they don't have any in stock anyway.

      Thanks for the archive suggestion. Looking there now.

      Comment

      • 78550GS

        #4
        Seems the search feature is having an issue at the moment. I keep getting a fatal error.

        Comment

        • Nessism
          Forum LongTimer
          GSResource Superstar
          Past Site Supporter
          Super Site Supporter
          • Mar 2006
          • 35790
          • Torrance, CA

          #5
          The fuel screws are the same as the larger bikes and try limiting your search parameters to just a couple words.

          Edit: just tried myself and I'm getting search errors too. Never seen that before in all my time here.

          EDIT2: you can find the info here...http://members.dslextreme.com/users/bikecliff/
          Last edited by Nessism; 06-16-2014, 08:42 AM.
          Ed

          To measure is to know.

          Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

          Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

          Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

          KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

          Comment

          • tkent02
            Forum LongTimer
            Past Site Supporter
            • Jan 2006
            • 35571
            • Near South Park

            #6
            Yep, the 550s screws match the ones in the 750 and the 1000. Getting the tip out can be a bitch.

            If you need another carburetor let me know, I have a box of them.
            http://img.photobucket.com/albums/v5...tatesMap-1.jpg

            Life is too short to ride an L.

            Comment

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