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  • #16
    another option

    Mike's XS has a manual petcock that can replace the XS11 standard valve.

    Petcock - Non Vacuum type 1978-84 XS650


    It's going to work backwards on the right side because they only have left.

    I have an XS650 that I bought new over 30 years ago. It has a vacuum petcock. It has not ever given my trouble. I never let fuel rot in it, either. A proper rebuild should last from now on.
    Marty (in Mississippi)
    XS1100SG
    XS650SK
    XS650SH
    XS650G
    XS6502F
    XS650E

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    • #17
      You can modify your standard petcoks to get an "off" position:
      Tech tip thread: http://www.xs11.com/forum/showthread.php?t=35350

      I've done this to my G and it was so easy. I love having the peace of mind knowing that NO fuel will flow. It's great to have an off position so when the time comes and the vacuum does not shut it off any more, I can switch to off and then pull the tank without spilling any fuel out of a leaky petcock.
      Hi, my name is George & I'm a twisty addict!

      80G (Green paint(PO idea))
      The Green Monster
      K&N A/F, TC's fuse block, '81 oil cooler, TC's homemade 4-2 w/Mac Mufflers, Raptor 660 ACCT
      Got him in '04.
      bald tire & borrowing parts

      80SG (Black w/red emblems & calipers)
      Scarlet
      K&N A/F, TC's fuse block, WJ5, Shoei bags, Raptor 660 ACCT.
      Got her in '11
      Ready for the twisties!

      81H (previously CPMaynard's)
      Hugo
      Full Venturer, Indigo Blue with B/W painted tank.
      Cold weather ride

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      • #18
        I am usually a big fan of stop-gap measures, but cleaning the petcocks and replacing the innards with the correct kits will solve your problem and make your bike more of a no-brainer. Adding another vacuum device seems like about the same trouble as rebuilding the originals. Adding a cutoff downstream seems like a bandaid that will fail eventually (like when I forget to turn them off). Rebuilt petcocks and good float needles will make the bike safe and reliable and reduce human error.
        "Time is the greatest teacher; unfortunately, it kills all of its students."

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        • #19
          Originally posted by LoHo View Post
          I am usually a big fan of stop-gap measures, but cleaning the petcocks and replacing the innards with the correct kits will solve your problem and make your bike more of a no-brainer. Adding another vacuum device seems like about the same trouble as rebuilding the originals. Adding a cutoff downstream seems like a bandaid that will fail eventually (like when I forget to turn them off). Rebuilt petcocks and good float needles will make the bike safe and reliable and reduce human error.
          Yep yep, I agree 100%, the manual shutoffs, I suggested, downstream of the petcocks would be a bandaid till you get your rebuild kits from George Fix.

          Even the Octy can be restored succesfully, which I'll do once I get to my SF build.
          1980 XS1100G "Dolly G" Full Dresser (with a coat of many colors )
          1979 XS1100SF (stock-euro mods planned)
          1984 XV700L Virago (to be hot-modded)
          1983 XJ750MK Midnight Maxim (semi-restored DD)
          1977 XS650D ( patiently awaiting resto)

          Sometimes it takes a whole tank of gas before you can think straight.

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