Home Forum Ask A Member Square fuel pump

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  • #325509
    Matthew Pieklik
    Participant

      US Member

      Hi All, I’m working on a 1973 4HP yacht twin. The fuel pump has number changes as follows: 0381815 to 0386833 to 0388684 to the tune of $167.57. When did they start making them out of gold?     Anyhow, I would like to rebuild it but they don’t list a kit for it.  Does anyone know if one of the other kits may work for this one? Don’t want to take a road trip to China if I don’t have to. Thanks , Matt.

      #325518
      JACQUES
      Participant

        some have complaints about  China stuff.. I use them all the time or did  anyway.  I  refurbished many small OBs

        check Amazon not a big loss if not satistified or go all out for  a gold one.

        tricky beast to rekit but easy after a few … but kits are likely just as expensive asa new one

        a square pump is a square pump.

        http://www.leeroysramblings.com/Rebuilding_fuelpump.htm

        How To Rebuild Omc Fuel Pump

         

        Joining AOMCI has priviledges 🙂

        1 user thanked author for this post.
        #325525
        Don
        Participant

          US Member

          393088, OEM repair kit, $20.   Good luck, these little pumps are pretty tough to work on.   Read the directions with the OEM kit first.  There are several layers to these little pumps, mark everything with something to be sure you have all the layers properly stacked together and oriented correctly.  There is one tiny little spring and cup that is a bugger to install.

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          #325532
          JACQUES
          Participant

            mark the side parts with a felt pen to facilitate layer reorientation on assembly.. or scribe with a dremel tool

            Spings and small mushroom heads … I dab some crazy  glue on  base nipple  and mushrooms to prevent it from tipping over on reassembly .

            when done do a blow test     in to out only….    no air  should pass   “out to in”

             

            or buy a pump .. easier

             

             

            Joining AOMCI has priviledges 🙂

            1 user thanked author for this post.
            #326404
            David Bartlett
            Participant

              US Member

              Just my $0.02 here. The original pump lasted 50 years. The Amazon Chinesium units I have had experience with last about 50 minutes. I would rather try to rebuild using the kit Don referenced than by an Amazon pump. I chased my tail on a motor for 2 months once, and ultimately it was the pump. OEM product fixed the issue.

              The rebuild process is tricky but doable!

              David Bartlett
              Pine Tree Boating Club Chapter

              "I don't fully understand everything I know!"

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