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    #1

    Diaphragm Replacement

    Would someone please tell me how to replace the diaphragm on the slide throttle? Also, are the slide/diaphragm assemblies interchangeable between a BS32SS and a BS34SS?
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    #2
    32 and 34 slides are different. You can look up the PN's for yourself, using one of the various OEM part suppliers available online.

    I have replaced diaphragms before by carefully uncrimping the lip on the slide which secures the diaphragm's plastic retaining ring. The lip will likely crack and break off in places, but if you are careful, you can typically preserve enough of the lip to adequately secure the ring again, after the diaphragm is replaced. It's not without risk, but doable.
    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

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      #3
      I've not tried this supplier but have read good reviews on other boards. They have the diaphragms and instructions on their site.

      JBM Industries Rubber Carburetor Socket/Holders & Diaphragms
      http://jbmindustries.com/
      JBM Industries rubber carburetor holder socket boots, flange intake sockets, vibration isolators, stainless steel exhaust springs, for Rotax 912, 582, 503, 447, 377, Zenoah & HKS engines. Yamaha 650 SX and TX Mikuni BS-38 and 34 CV carbs. Diaphragms & holders.
      1980 Yamaha XS1100G (Current bike)
      1982 GS450txz (former bike)
      LONG list of previous bikes not listed here.

      I identify as a man but according to the label on a box of Stauffers Baked Lasagne I'm actually a family of four

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        #4
        Is there an expected lifespan for the CV diaphragm? Seems we will all run out of NOS as some point.
        KID
        1980 GS1000G Full vetter touring pack (getting closer)

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          #5
          42 years and going strong. Just had 1 of the 4 out and still pliable with no signs of wear. I think it may depend on use. My bike does not have multi-year periods of sitting idle. My guess is if the diaphragms are worked regularly they stay pliable. This is only a guess.
          Rich
          1982 GS 750TZ
          2015 Triumph Tiger 1200
          BikeCliff's / Charging System Sorted / Posting Pics
          Destroy-Rebuild 750T/ Destroy-Rebuild part deux

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            #6
            Thank you all for your input. I appreciate it.

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