Ungang Carbs

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  • snackie
    • Jan 2026

    #1

    Ungang Carbs

    I've hit a little bump in the road in my attempt to rebuild my carbs. Can't budge a single screw on either gang rail. I've tried vise grips but I'm hesitant to use an impact driver for fear of damaging the carb bodies. Any suggestions?

    Much thanks.
  • hampshirehog
    Forum LongTimer
    Past Site Supporter
    • Oct 2007
    • 12675
    • Hampshire. UK

    #2
    Try putting the carbs on an old pillow or something similar that's nice and soft with plenty of give and use the impact driver then. Don't wallop the impact just give it a sharp tap.
    79 GS1000S
    79 GS1000S (another one)
    80 GSX750
    80 GS550
    80 CB650 cafe racer
    75 PC50 - the one with OHV and pedals...
    75 TS100 - being ridden (suicidally) by my father

    Comment

    • Agemax
      Forum Guru
      • Apr 2008
      • 8371
      • plymouth uk

      #3
      impact driver will be fine, just put the carbs face down on a couple of cushions or pillows. make sure the impact driver is set to "unscrew"!
      1978 GS1085.

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

      Comment

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

        #4
        Impact driver won't turn if you set the carbs on something soft. Just use it with the carbs on the workbench. It won't hurt anything.

        Check my signature for a link to a carb rebuild tutorial you might find helpful.
        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

        • hampshirehog
          Forum LongTimer
          Past Site Supporter
          • Oct 2007
          • 12675
          • Hampshire. UK

          #5
          The impact will turn Ed - it's an old trick and works fine.
          79 GS1000S
          79 GS1000S (another one)
          80 GSX750
          80 GS550
          80 CB650 cafe racer
          75 PC50 - the one with OHV and pedals...
          75 TS100 - being ridden (suicidally) by my father

          Comment

          • stinkyMD

            #6
            i cannot stress enough the effectiveness of spraying a stuck fastener with penetrating oil and letting it soak in for awhile. definitely would be my first step before banging on stuff and stripping heads. using a heat gun to CAREFULlY warm the area before spraying works better yet. shield nearby parts you think could be damaged with foil.

            assuming you have not already done this.

            Comment

            • Agemax
              Forum Guru
              • Apr 2008
              • 8371
              • plymouth uk

              #7
              Originally posted by hampshirehog
              The impact will turn Ed - it's an old trick and works fine.
              has always worked for me too, just grip the impact driver and twist anticlockwise as you hit it......
              1978 GS1085.

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

              Comment

              • snackie

                #8
                PB Blaster

                Yeah, I hit em all with PB Blaster before attempting to loosen, I'll try the impact driver.

                Thanks all!

                Comment

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

                  #9
                  Originally posted by hampshirehog
                  The impact will turn Ed - it's an old trick and works fine.
                  Originally posted by Agemax
                  has always worked for me too, just grip the impact driver and twist anticlockwise as you hit it......
                  Okay, I stand corrected then. Will reiterate though that you don't need to soften the blow. Putting carbs on a workbench is fine. Just don't go wailing on them with the hammer.
                  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

                  • snackie

                    #10
                    Pilot Screw O-Ring

                    Been trying for an hour to get the Pilot Screw O-Rings out using a paper clip with a little hook at the end. Can't get those little buggers out!
                    Anybody have luck with an alternate method?

                    Comment

                    • hampshirehog
                      Forum LongTimer
                      Past Site Supporter
                      • Oct 2007
                      • 12675
                      • Hampshire. UK

                      #11
                      Snag them with a wood screw.
                      79 GS1000S
                      79 GS1000S (another one)
                      80 GSX750
                      80 GS550
                      80 CB650 cafe racer
                      75 PC50 - the one with OHV and pedals...
                      75 TS100 - being ridden (suicidally) by my father

                      Comment

                      • snackie

                        #12
                        Wood Screw?

                        Wood Screw? That doesn't sound safe. Really?

                        Comment

                        • Agemax
                          Forum Guru
                          • Apr 2008
                          • 8371
                          • plymouth uk

                          #13
                          Originally posted by snackie
                          Wood Screw? That doesn't sound safe. Really?
                          use a thin one, gently screw it into the hole until the o ring gets caught on the thread, then gently pull it out
                          1978 GS1085.

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

                          Comment

                          • snackie

                            #14
                            Carbs Separated!

                            Carbs Separated! I'm glad I did that, the first transfer tub I removed, an o-ring fell right off.

                            Comment

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