carb rebuild - Needle jet stuck #4

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  • Zero260
    • Jan 2026

    #1

    carb rebuild - Needle jet stuck #4

    I'm having problems removing the needle jet on my #4 carb. I did the "push the screw driver into the main jet" trick on the others which came out no problem. but #4 is corroded(green) and it is very jammed in there. I Tried taping it out which got it to move, but it won't slide out. any suggestions? I currently have it soaking in penetrating oil
  • Agemax
    Forum Guru
    • Apr 2008
    • 8371
    • plymouth uk

    #2
    leave it soaking for an hour or 2 then try again.
    1978 GS1085.

    Just remember, an opinion without 3.14 is just an onion!

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    • Steve
      GS Whisperer
      • Jun 2005
      • 35924
      • southwest oHIo

      #3
      When you tap on it on your next removal attempt, use something rather solid, but soft, like a wooden dowel.

      You don't want to flare the end of the tube to jam it in place.

      .
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      • Nessism
        Forum LongTimer
        GSResource Superstar
        Past Site Supporter
        Super Site Supporter
        • Mar 2006
        • 35787
        • Torrance, CA

        #4
        Heat may help.
        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

        • Guest

          #5
          I soak them in PJ Blaster for a couple of hours and use the non-tapered end of the choke rod to lightly tap it out without the main jet or washer.
          If it doesn't move while LIGHTLY tapping then use some heat as Ed suggested.

          Comment

          • Zero260

            #6
            thanks for the help. blaster and time worked. It was dirty as hell, hopefully it cleans up now

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