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1980 GS850 Petcock valve

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    1980 GS850 Petcock valve

    The petcock on this bike is ruined. I have looked on line and I have noticed there are 2 types. One with an on/off handle and another one without. Which one should I purchase?
    Thanks
    1980 GS850
    1977 CB550
    1977 CB750
    1875 GL1000
    1980 XS1100

    #2
    Originally posted by yellowjacket View Post
    The petcock on this bike is ruined. I have looked on line and I have noticed there are 2 types. One with an on/off handle and another one without. Which one should I purchase?
    Thanks
    Well, what does your ruined one look like....hopefully it has handle..
    1981 gs650L

    "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

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      #3
      Use the advanced search feature. As I remember it's the one wthout the knob.




      or

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      Last edited by Charlie G; 05-21-2018, 10:44 AM.
      sigpic
      83 GS1100g
      2006 Triumph Sprint ST 1050

      Ohhhh!........Torque sweet Temptress.........always whispering.... a murmuring Siren

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        #4
        No handle on ruined one. It looks like I will need to measure mounting holes. Most on ebay say 44mm is that correct?
        1980 GS850
        1977 CB550
        1977 CB750
        1875 GL1000
        1980 XS1100

        Comment


          #5
          Originally posted by yellowjacket View Post
          No handle on ruined one. It looks like I will need to measure mounting holes. Most on ebay say 44mm is that correct?
          You need to measure.
          sigpic
          83 GS1100g
          2006 Triumph Sprint ST 1050

          Ohhhh!........Torque sweet Temptress.........always whispering.... a murmuring Siren

          Comment


            #6
            Originally posted by yellowjacket View Post
            No handle on ruined one. It looks like I will need to measure mounting holes. Most on ebay say 44mm is that correct?
            The leverless petcock is 50mm and is low profile so it clears the carbs. I suggest ordering a new one from partzilla or parts outlaw. You can get them from ebay too but I've had a bad experience on one such petcock so I can't recommend them. Oh, and don't forget to order new sealing washers and O-ring if the petcock doesn't come with a new one.

            lastly, this is a very common topic and a search will easily turn up this same information and more.
            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

            Comment


              #7
              Originally posted by yellowjacket View Post
              The petcock on this bike is ruined. I have looked on line and I have noticed there are 2 types. One with an on/off handle and another one without. Which one should I purchase?
              Thanks
              As others have mentioned, it depends a LOT on what the old one looked like, but there is also a difference whether you have an 850G or an 850GL. Since you did not have a handle, it appears that you have an L model. It would be nice to put that in a signature, so you don't have to remember to mention it every time you ask a question.

              .
              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
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