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prime on my new petcock

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    prime on my new petcock

    I just got me a new petcock for my 1100L and i have just one dumb question about it. The word prime is towards the top so does this mean that when the screw driver slot is up and down it is in prime mode? The reason i ask is because the one on my bike now is straight up and down all the time , but it was rebuilt by the po so who knows?
    I didnt do it I swear !!

    --------------------------
    http://i1210.photobucket.com/albums/...Picture003.jpg 1982 GS850G

    http://i1210.photobucket.com/albums/...n1/Picture.jpg 1980 GS1100L

    #2
    well, you can always pull the fuel line off & see what happens in that position... would certainly be nice to know for sure where prime is.
    '85 GS550L - SOLD
    '85 GS550E - SOLD
    '82 GS650GL - SOLD
    '81 GS750L - SOLD
    '82 GS850GL - trusty steed
    '80 GS1100L - son's project bike
    '82 GS1100G - SOLD
    '81 GS1100E - Big Red (daily rider)

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      #3
      If I understand the 1980 petcock, you also need a quick bit of vacuum to get it going on prime.
      Once it starts flowing, you don't need the vacuum any more.

      In other words, no gas will flow, no matter which way you turn it.
      Apply a little bit of vacuum, then release.
      If the gas stops, you have the petcock in the ON position.
      If it gas keeps flowing, it's in the PRIME position.

      .
      sigpic
      mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
      hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
      #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
      #2 son: 1980 GS1000G
      Family Portrait
      Siblings and Spouses
      Mom's first ride
      Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
      (Click on my username in the upper-left corner for e-mail info.)

      Comment


        #4
        Originally posted by hikermikem View Post
        well, you can always pull the fuel line off & see what happens in that position... would certainly be nice to know for sure where prime is.
        I know I saw that documented somewhere... Pretty sure vertical is prime. I could be wrong though.

        A rebuilt petcock may still not function correctly, so it would be best to test it for the action Steve describes. If it doesn't work correctly, Z1 has replacements. About $60 to never think about it (except springtime, when you will need to prime it again).
        Last edited by Dogma; 09-11-2009, 08:45 AM.
        Dogma
        --
        O LORD, be gracious to me; heal me, for I have sinned against you! - David

        Skeptical scrutiny is the means, in both science and religion, by which deep insights can be winnowed from deep nonsense. - Carl Sagan

        --
        '80 GS850 GLT
        '80 GS1000 GT
        '01 ZRX1200R

        How to get a "What's New" feed without the Vortex, and without permanently quitting the Vortex

        Comment


          #5
          yeah got me a new one but just wanted to make sure i knew wich way was prime.
          I didnt do it I swear !!

          --------------------------
          http://i1210.photobucket.com/albums/...Picture003.jpg 1982 GS850G

          http://i1210.photobucket.com/albums/...n1/Picture.jpg 1980 GS1100L

          Comment


            #6
            Vertical is prime position. Check out below to see how it works:

            79 GS1000S
            79 GS1000S (another one)
            80 GSX750
            80 GS550
            80 CB650 cafe racer
            75 PC50 - the one with OHV and pedals...
            75 TS100 - being ridden (suicidally) by my father

            Comment


              #7
              Wow nice diagram. thanks man.
              I didnt do it I swear !!

              --------------------------
              http://i1210.photobucket.com/albums/...Picture003.jpg 1982 GS850G

              http://i1210.photobucket.com/albums/...n1/Picture.jpg 1980 GS1100L

              Comment


                #8
                Originally posted by kparkfan View Post
                Wow nice diagram. thanks man.
                It's amazing what you can find in the factory service manual.
                Ed

                To measure is to know.

                Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

                Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

                Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

                KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

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