Mukuni Carb with accelerator Pump?

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  • Recoush
    • Jan 2026
    #1

    Mukuni Carb with accelerator Pump?

    Purchased a Mikuni VM carburetor, has what I assume is an accelerator pump attached to the bowl on #2 carb with a manual choke lever and throttle adjust on top if I remember correctly.

    Purchased as a backup for my 79 Suzuki GS1000 was inspecting it now the weather has improved.

    where do i find a parts diagram?
    Can this be converted to a standard carb?
    Or should I clean and restore as is?
    Tags: None
    • Guest
      #2
      From what I've heard the Kawasaki used the accelerator pump. I'm sure they are similar and you could get the proper needle, main jet and pilot jet. I would call the techs at Z1 Enterprises and see if you can find someone with personal knowledge.

        Comment

        • Recoush
          #3
          Very interesting guess i have to figure out what jets are in it assume i can measure with a wire gauge?

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            • Guest
              #4
              It's stamped on the Mikuni jets and needles, I believe Basscliff has a chart on his site that give the specifics for models and years.

                Comment

                • chuck hahn
                  Forum LongTimer
                  Past Site Supporter
                  • May 2009
                  • 25918
                  • Norman, Oklahoma
                  #5
                  Pics always help when asking a question...just sayin.
                  Last edited by chuck hahn; 05-12-2013, 09:49 PM.
                  MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                  1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                  NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                  I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

                    Comment

                    • wkmpt
                      #6
                      The VM O-ring kits from Mr. Barr will do everything except the accelerator pump. I remember seeing a rebuild kit for the accelerator pumps, I just cannot for the life of me remember where. Pretty much all of the other parts are the same as standard VM carbs. IIRC, Bike Bandit has exploded parts diagrams that will list all of the parts.

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                        • chuck hahn
                          Forum LongTimer
                          Past Site Supporter
                          • May 2009
                          • 25918
                          • Norman, Oklahoma
                          #7
                          I would try Sudco or Sirius Consolidated for the pumper parts.
                          MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                          1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                          NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                          I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

                            Comment

                            • Nessism
                              Forum LongTimer
                              GSResource Superstar
                              Past Site Supporter
                              Super Site Supporter
                              • Mar 2006
                              • 35787
                              • Torrance, CA
                              #8
                              Kawasaki used VM28's with a pump on some of their early big bore bikes. If you can verify the jets are stock, and your bike is stock, I'd slap them on as is. The jetting should be close.
                              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
                                  #9
                                  These are my Kawi 28mm with the accelerator pump. I haven't pulled them apart yet to document jets ect..

                                    Comment

                                    • Recoush
                                      #10
                                      Similar but the air mix screw is through the bottom of the bowl :>)
                                      will post a photo next time I get out to the garage.

                                      someone cleaned them as very little dirt or grunge has broken cable guide on the back side and then the bowl to bowl accelerator bowl pump and a manual choke

                                        Comment

                                        • Recoush
                                          #11
                                          here is a photo of the carb these are 34mm in the back groun you can see the broken cable guide the accelerator pump and the mix screw? through the bowl

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