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Good BS34 carb rebuild/repair tutorial

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  • Good BS34 carb rebuild/repair tutorial

    BS34's for Suzuki but a very nice pictorial review re: how to rebuild these carbs. Lots of good pictures of tools, techniques, etc.

    http://www.mtsac.edu/~cliff/storage/...d_Tutorial.pdf
    1995 KZ100P
    Pods, jets, pipes, cam adjuster, oil cooler

    1977 Ironhead - custom build
    Hot engine, custom frame, KZ front and rear, high torque starter, alternator conversion, Progressive shocks, Thunderheart wiring, Dyna ignition, oil cooler, Dakota Digital instruments, etc.

    Sold all my XS's to Eastcoaster but still love to keep up with you guys. This is the best cycle forum on the web.

  • #2
    Yes, thats an excellent carb tutorial. I found it a couple of weeks ago and am using it to rebuild carbs on my 80' GS550.
    Current Daily Rides / Projects

    1979 Yamaha XS1100F (since 2015)...Project
    1980 Suzuki GS850G (since 2012)
    1979 Kawasaki KZ400B (since 2013)

    Comment


    • #3
      Impressive detail in that tech tip! Interesting how they remove the emulsion tube. Remove the main jet, take the washer off and replace the main jet, press the main jet and emulsion tube down and out with a screwdriver handle... no dowel needed!
      '79 XS11 F
      Stock except K&N

      '79 XS11 SF
      Stock, no title.

      '84 Chevy K-10 "Big Blue"
      GM 350, Muncie SM465, NP208, GM 10 Bolt with 3.42gears turnin 31x10.5 Baja Claws

      "What they do have is an implacable, unrelenting presence and movement that bespeaks massive power lurking behind paint and chrome. They don't wail like a screeching ninja, the don't rumble like a harley. They just growl like a spactic, stressed out badger waiting to rip your face off and eat your soul." Trainzz~RIP~

      Comment


      • #4
        Hey A&P, in your signature, do you have a KZ100P or a KZ1000P? Just never heard of a 100cc police bike.
        '81 XS1100 SH

        Melted to the ground during The Valley Fire

        Sep. 12th 2015

        RIP

        Comment


        • #5
          81XSproject

          Actually, Kawasaki made 100cc police bikes for a few years as part of their "equal opportunity for very tiny cops" program.

          Fixed it.

          Thanks
          1995 KZ100P
          Pods, jets, pipes, cam adjuster, oil cooler

          1977 Ironhead - custom build
          Hot engine, custom frame, KZ front and rear, high torque starter, alternator conversion, Progressive shocks, Thunderheart wiring, Dyna ignition, oil cooler, Dakota Digital instruments, etc.

          Sold all my XS's to Eastcoaster but still love to keep up with you guys. This is the best cycle forum on the web.

          Comment


          • #6
            Originally posted by Aches n Pains View Post
            81XSproject

            Actually, Kawasaki made 100cc police bikes for a few years as part of their "equal opportunity for very tiny cops" program.

            Fixed it.

            Thanks
            Ohhh... I thought that's why they went to Harleys.
            '81 XS1100 SH

            Melted to the ground during The Valley Fire

            Sep. 12th 2015

            RIP

            Comment


            • #7
              Why, when I go to the link, am I looking at a blank page. Windows 7? AVG?
              Marty (in Mississippi)
              XS1100SG
              XS650SK
              XS650SH
              XS650G
              XS6502F
              XS650E

              Comment


              • #8
                Hey Marty,

                It's a PDF file, do you have Adobe Acrobat Viewer/Reader installed?

                Go to http://www.adobe.com and download and install the READER!

                Secondly, it's a 9+ MB sized file, takes a while to download even wiht cable!

                T.C.
                T. C. Gresham
                81SH "Godzilla" . . .1179cc super-rat.
                79SF "The Teacher" . . .basket case!
                History shows again and again,
                How nature points out the folly of men!

                Comment


                • #9
                  It must be time for an Adobe upgrade.
                  Marty (in Mississippi)
                  XS1100SG
                  XS650SK
                  XS650SH
                  XS650G
                  XS6502F
                  XS650E

                  Comment


                  • #10
                    Upgraded. Now it works. Imagine that!

                    It was suggested on another forum that the Yamaha carb cleaner works great in a crock pot. Source the crock pot from your local thrift store. Supposedly, that cleaner is easy on the butterfly seals.
                    Marty (in Mississippi)
                    XS1100SG
                    XS650SK
                    XS650SH
                    XS650G
                    XS6502F
                    XS650E

                    Comment


                    • #11
                      Is this the same carb that the 79xs1100 uses? Getting ready to pull mine out tomorrow. Took off seat, gas tank and air filter today.


                      Originally posted by Aches n Pains View Post
                      BS34's for Suzuki but a very nice pictorial review re: how to rebuild these carbs. Lots of good pictures of tools, techniques, etc.

                      http://www.mtsac.edu/~cliff/storage/...d_Tutorial.pdf
                      79 XS1100 SF

                      Comment


                      • #12
                        The XS also uses the Mikuni BS CV carbs. There is a couple subtle differences between the stock carbs on a 79 XS11 and the ones in that tutorial. Primairly the choke linkage is not cable operated on the XS, so there is a very small metal ball and spring that locks into the detent in the choke lever. They live behind choke lever in carbs 1 and 4, (the one behind four is an extra replacement I think as there are no detents in the choke lever at that end for the ball to lock into.).

                        Also, your carbs may still have the stock brass floats. The rubber plug shown over the pilot jet is actually an aluminum screw in your carbs.

                        Personally, I would not use the main jet to push the emulsion tube out with. In alot of the carbs I have worked on, the force required to get that emulsiont ube out when they are dirty could mess up the threads on the main jet or the emulsion tube using that method. I use a wooden dowel to push the emulsion tube out, it is softer than the brass.
                        Life is what happens while your planning everything else!

                        When your work speaks for itself, don't interrupt.

                        81 XS1100 Special - Humpty Dumpty
                        80 XS1100 Special - Project Resurrection


                        Previously owned
                        93 GSX600F
                        80 XS1100 Special - Ruby
                        81 XS1100 Special
                        81 CB750 C
                        80 CB750 C
                        78 XS750

                        Comment


                        • #13
                          You wouldnt be able to move the emulsion tube much with the main jet in like that. Maybe 3/16" before it would hit the locator pin down in the carb body.
                          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

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