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  • #1

    Fuel Petcocks

    I am in the process of restoring my 79 xs1100 special and ran into a question.
    The carbs were off the bike when I got it and I'm not sure how the petcocks hook up to the carbs.
    The tank has a petcock on both sides of it and the petcocks have 2 outlets on them.
    The manual that came with the bike shows a completely different petcock.
    All help appreciated
    79 SF
    Tags: None
  • #2
    The first question is do You have an 'octopus' .
    It mounts to top of the carbs and has a vac line to the carb boot.
    If not, then dont worry.
    Front petcock out is on/reserve the rear is prime.
    You can cap the prime outlets and run the other ones to each of the carb fuel inlets. (Lower ones. Top ones are carb vents for 78/79 carbs.
    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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    • #3
      the stock dual petcocks are usually marked with a L and R with the prime outlet to the rear
      where are we going, and why are we in this hand basket?
      Iowa the Beautiful Land 1980 XS1100SG

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      • #4
        If your missing the octy and don't intend to reinstall it, look here...

        http://www.xs11.com/forum/showthread.php?t=35443
        Fast, Cheap, Reliable... Pick any two

        '78E original owner - resto project
        '78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
        '82 XJ rebuild project
        '80SG restified, red SOLD
        '79F parts...
        '81H more parts...

        Other current bikes:
        '93 XL1200 Anniversary Sportster 85RWHP
        '86 XL883/1200 Chopper
        '82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project
        Cage: '13 Mustang GT/CS with a few 'custom' touches
        Yep, can't leave nuthin' alone...

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        • #5
          Thanks

          OK, I'll see what I can do about connecting the carbs.
          Thanks for the info.

          Happy trails,
          Ben
          79 SF

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