Petcock with no handle '80 GS1100L

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  • fnickel
    #1

    Petcock with no handle '80 GS1100L

    I have the petcock that has no handle, it operates on vacuum. It does have the small screw inside for adjustment, and has the letters "PRI" on the case. My question is, what position do you turn the screw to get to "prime" or "the regular running position", or do you turn it all the way in or out to get the 2 options. I don't have an original owners manual that might detail this. Thanks for all the help. Great forum.
    Tags: None
    • Steve
      GS Whisperer
      • Jun 2005
      • 35925
      • southwest oHIo
      #2
      Looking at the petcock from the left side of the bike, rotate it all the way clockwise for RESERVE, 1/4 turn counter-clockwise for RUN, another 1/4 turnn counter-clockwise for PRIME. The normal position is RUN. The vacuum will open the valve in RUN and RESERVE, but it free-flows in PRIME.


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        • Guest
          #3
          The slot straight up and down for prime (12 and 6 o'clock) and back and forth for run (3 and 9 o'clock). You can turn these slots 100 times and it doesn't change anything. These settings are what they are.

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            • chuckycheese
              Forum Sage
              Charter Member
              Past Site Supporter
              • May 2002
              • 3869
              • The Gulf Coast of south Florida in the winter and northern Nevada in the summer
              #4
              Petcock

              It's the old "1980 petcock caper". If this isn't the most common subject, it's gotta be close!8-[
              1980 GS1100E....Number 15!

                Comment

                • Guest
                  #5
                  Originally posted by chuckycheese
                  It's the old "1980 petcock caper". If this isn't the most common subject, it's gotta be close!8-[
                  What kind of oil do you use in your L model.

                    Comment

                    • fnickel
                      #6
                      Which Oil?

                      I use 10W40, whatever brand is least expensive when I am buying. It calls for 10W40 right on the oil fill cap, so that makes it an easy decision. The bike uses a little oil. It has about 35,000 miles on it, and the oil stem seals are not the greatest. It seems that the more I ride it, the better the oil consumption gets. It usually just smokes a bit when starting it up cold.

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                        • chuckycheese
                          Forum Sage
                          Charter Member
                          Past Site Supporter
                          • May 2002
                          • 3869
                          • The Gulf Coast of south Florida in the winter and northern Nevada in the summer
                          #7
                          Originally posted by chef1366
                          What kind of oil do you use in your L model.
                          Hey, Chef, I use regular old Pennzoil 10-40....and it seems to serve me well.:-D
                          1980 GS1100E....Number 15!

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                            • Guest
                              #8
                              Originally posted by chuckycheese
                              Hey, Chef, I use regular old Pennzoil 10-40....and it seems to serve me well.:-D
                              I was joking:-D Just going along with the 80 petcock being well discussed along with oil and L models.\\/

                                Comment

                                • gustovh
                                  Forum Sage
                                  Past Site Supporter
                                  • Oct 2006
                                  • 4994
                                  • Vernonia
                                  #9
                                  10/40 Penzoil for my 1100 L, the valve and tank I now use is off a 750 L and I have Pri, ON, and Res.
                                  V
                                  Gustov
                                  80 GS 1100 LT, 83 1100 G "Scruffy"
                                  81 GS 1000 G
                                  79 GS 850 G
                                  81 GS 850 L
                                  83 GS 550 ES, 85 GS 550 ES
                                  80 GS 550 L
                                  86 450 Rebel, 70CL 70, Yamaha TTR125
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