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Jabsco toilet question-gctid816034

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    Jabsco toilet question-gctid816034

    Our new boat is now 10 years old. The Jabsco manual flush toilet was working great, but the last two seasons, it seems to back fill from the holding tank after a few hours. It doesn't seem to matter whether the toilet is dry or wet flushed.

    There's a bunch of these units out there so I'm wondering if this problem is due to crystallized urine on a rubber flapper valve or something else.

    And what can be done to repair this toilet.
    2007 Discovery 246
    300mpi BIII
    Welcome island Lake Superior

    #2
    Buy a rebuild kit. It will come with joker valves etc. It will be not working because of the salt build up.
    Bayliner 4387
    250 Hino's

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      #3
      I've never tried this but I wonder if a pot of hot water would loosen/dissolve the deposits around the choker valve. Hot but not boiling water so as not to deform the rubber.
      "Martini's Law"
      1986 Bayliner 3270, 110 Hino's
      Nova Scotia, Canada

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        #4
        It would be an easy mid season remedy if it worked. I'll give that a try. And will follow up with a rebuild kit. Hard. to believe our new boat is starting its eleventh season
        2007 Discovery 246
        300mpi BIII
        Welcome island Lake Superior

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          #5
          Rather than a rebuild kit, for almost the same price you can buy an entire new handle assembly already put together. Swap takes about 5-10 minutes.
          ________________
          1989 Bayliner 3270

          Comment


            #6
            This is what I got after having the same issues. Piece of cake to swap out.

            https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

            Here's a video of how easy it is to do this.

            https://www.youtube.com/watch?v=p0wxX2789F8

            If you're having backflow issues, get a pumpout first and flush plenty of water through before starting this job. The new one works like "buttah!"
            Simo
            2002 2855 350MPI Bravo III on Lake Champlain -> SOLD!
            Downsized to a couple of kayaks for now.

            Comment


              #7
              This will do it:

              http://www.ebay.ca/itm/191385876998

              As some routine maintenance:

              Try dumping some vinegar down and flush it, leaving the vinegar for while, before flushing with fresh water.
              Mike & Dixi
              2006 265 5.0 MPI B3
              Closed Cooling

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                #8
                #1 Check the holding tank vent to make sure it isnt clogged

                #2 If vent is clear, change the joker valve. I think it would be impressive if you got 10 years out of a joker valve. I change mine every year as PM. They dont cost a lot of money. I also keep a spare on board. Only takes a few minutes to change. Make sure you pump out first!

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                  #9
                  Thanks everyone! I'll tackle the job next week looks pretty easy
                  2007 Discovery 246
                  300mpi BIII
                  Welcome island Lake Superior

                  Comment


                    #10
                    Replaced the whole pump assembly with the new locking variety. The old joker valve and base gasket looked fine FWIW.

                    The new unit locks down after use and should solve my backflow problem. As fr as a 10 minute install, more like 30 minutes due to limited accessibility in the tiny bathroom on my 246.
                    2007 Discovery 246
                    300mpi BIII
                    Welcome island Lake Superior

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