Gsx750 carb build

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  • Woodsy
    • Jan 2026

    #1

    Gsx750 carb build

    These have been in storage for probably 12 months and are now out for a rebuild.

    Plans are to replace the bolts with stainless Allen key ones. The body internals are spotless as I cleaned them not long before I out them into storage going to paint strip the outside 2 carbs to get them spotless and leave them in bare alloy.
    IMAG0171.jpg
  • Woodsy

    #2
    Clean but still needs some cosmetic touch ups
    IMAG0164.jpg

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    • Woodsy

      #3
      Will this effect the performance of the carbs? Its on all of them. I can'tsee light through the tear but iI don'tlike the look of it.IMAG0168.jpg

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      • sparki

        #4
        is it split? looks like a mark. if it isn't split it wont affect the vacuum

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        • Woodsy

          #5
          the rubber has worn through on one side each diaphragm has 4 wear marks on it.

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          • Guest

            #6
            Now take the fuel bowls and the diaphragm covers and polish them out.

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            • Woodsy

              #7
              I can polish the fuel bowls but the top covers are plastic

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              • bomber737

                #8
                So when you say "worn through" does that mean there is a hole? If there is a hole you can probably get new diaphragms from JBM industries.

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                • Woodsy

                  #9
                  I don't know if these are replaceable or not. They have a plastic ring on the top and a metal ring underneath.

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                  • bomber737

                    #10
                    They can be replaced quite easily, you have to breaker one of the plastic rings off. The is a tutorial on the JBM site on how to do it. I replaced them on a honda shadow and they worked great. Very high quality parts.

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                    • Woodsy

                      #11
                      Found a Hole in 2 Diaphragms. Will need to get a set from JBM.


                      Carbs are spotless inside but the outsides are still abit grubby. Not sure if i should blast them or just boil them in carb cleaner again.

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                      • bomber737

                        #12
                        KFC you replace 2 you might as well replace them all. If you have 2 that ate bad I bet the others aren't far behind and for another 40 bucks you might as well get 4

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                        • Woodsy

                          #13
                          Carbs are ready for re-assembly, apart from the rubber diaphragms which i will order from JBM Industries. Just need to check the float levels and either paint the 2 carb supporting brackets or replate them, I'm thinking paint.

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