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    #1

    Need Source for mixture screws

    1978 GS1000 VM Carbs. I need new mixture screws. bought some form Bike Bandit, but they are not correct.

    Looks like this, tip a bit broken off. Note: "O" ring as at the back of the threads.
    Last edited by Guest; 11-08-2012, 11:28 AM.
    Tags: None
    #2
    Z1 has them
    1978 GS 1000 (since new)
    1979 GS 1000 (The Fridge, superbike replica project)
    1978 GS 1000 (parts)
    1981 GS 850 (anyone want a project?)
    1981 GPZ 550 (backroad screamer)
    1970 450 Mk IIID (THUMP!)
    2007 DRz 400S
    1999 ATK 490ES
    1994 DR 350SES

    Comment

      #3
      Pilot screw, #18 on this fiche/site. Available for around $7 a pop.
      '80 GS1000ST
      '92 ZX-11
      Past rides: '79 GS1000SN, '84 GPZ900R

      http://totalrider.com/

      Comment

        #4
        Originally posted by Frank Z. View Post
        Pilot screw, #18 on this fiche/site. Available for around $7 a pop.
        A lot f sirtes list them as item #18, but there are different in design and shape. I sent t apic to your suggessted source. Thanks.

        Comment

          #5
          Those are PILOT screws...MIXTURE screws are on the sides. As stated above, Z1 has them..listed as KZ1000. The stem is a bit longer on the KZ needles but they tappered pointed end is the same.
          MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
          1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

          NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


          I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

          Comment

            #6
            Originally posted by chuck hahn View Post
            Those are PILOT screws...MIXTURE screws are on the sides. As stated above, Z1 has them..listed as KZ1000. The stem is a bit longer on the KZ needles but they tappered pointed end is the same.
            So you are saying check for the parts for a Kawasaki pilot screws? That is great news. Thank you.

            Comment

              #7
              Just call them and talk to Chris or Jeff...save yourself the confusion here.
              MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
              1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

              NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


              I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

              Comment

                #8
                I am not saying all KZ 1000 carb parts interchange with Suzuki...i am just sayingb that the KZ 1000 pilots will be just a bit longer than Suzuki ones and will work exactly the same.
                MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

                Comment

                  #9
                  Originally posted by gentlemanjim View Post
                  So you are saying check for the parts for a Kawasaki pilot screws? That is great news. Thank you.
                  Just call Z1 and tell them you want pilot FUEL screws for a VM carb

                  The #18 in the fiche are pilot AIR screws

                  Too much intermingling of imprecise terms here
                  1978 GS 1000 (since new)
                  1979 GS 1000 (The Fridge, superbike replica project)
                  1978 GS 1000 (parts)
                  1981 GS 850 (anyone want a project?)
                  1981 GPZ 550 (backroad screamer)
                  1970 450 Mk IIID (THUMP!)
                  2007 DRz 400S
                  1999 ATK 490ES
                  1994 DR 350SES

                  Comment

                    #10
                    Greetings and Salutations!!

                    Hi Mr. gentlemanjim,

                    Unless you are a long-lost member, I see by your post count that you are fairly new around here. How about some S.W.A.G.?

                    If you are here you probably have a 30 year old motorcycle that needs about 20 years worth of maintenance. You'll find all kinds of helpful tips, procedures, manuals, etc, in the links below. Let's get started.

                    Let me dump a TON of information on you and share some GS lovin'.

                    I just stopped by to welcome you to the forum in my own, special way.

                    If there's anything you'd like to know about the Suzuki GS model bikes, and most others actually, you've come to the right place. There's a lot of knowledge and experience here in the community. Come on in and let me say "HOoooowwwDY!"....

                    Here is your very own magical, mystical, mythical, mind-expanding "mega-welcome". Please take notice of the "Top 10 Common Issues", "Top 15 Tips For GS Happiness", the Carb Cleanup Series, and the Stator Papers. All of these tasks must be addressed in order to have a safe, reliable machine. This is what NOT to do: Top 10 Newbie Mistakes. Now let me roll out the welcome mat for you...



                    Please Click Here For Your Mega-Welcome, chock full of tips, suggestions, links to vendors, and other information. Then feel free to visit my little BikeCliff website where I've been collecting the wisdom of this generous community. Don't forget, we like pictures! Not you, your bike!

                    Thanks for joining us. Keep us informed.

                    Thank you for your indulgence,

                    BassCliff

                    Comment

                      #11
                      Originally posted by chuck hahn View Post
                      Those are PILOT screws...MIXTURE screws are on the sides.

                      Too much confusion exists already.

                      Those are Pilot Fuel Screws. Pilot Air screws are on the sides up high towards the rear.

                      One controls fuel into the pilot circuit, the other controls air.


                      Mixture screws are on CV carburetors, they are different in function.
                      http://img.photobucket.com/albums/v5...tatesMap-1.jpg

                      Life is too short to ride an L.

                      Comment

                        #12
                        Actually Tom...not one article from Mikuni that i have ever read calls them PILOT AIR SCREWS . They are refered to as mixture screws because they MIX air with the fuel to either richen or lean the MIXTURE...thus the term MIXTURE screw. And a PILOT screw simply meters fuel into the pilot circuit..turn in to lean the pilot circuit and out to richen the cicuit.
                        MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                        1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                        NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                        I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

                        Comment

                          #13
                          From the serice manual at Bikecliff...the part descriptions from the carb schematics, part number 18 "ADJUSTER" And as i said before, Mikuni referes to it as a mixture screw. There was a line or two in the manual however where SUZUKI called it an air screw.
                          MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                          1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                          NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                          I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

                          Comment

                            #14
                            Originally posted by chuck hahn View Post
                            Actually Tom...not one article from Mikuni that i have ever read calls them PILOT AIR SCREWS . They are refered to as mixture screws because they MIX air with the fuel to either richen or lean the MIXTURE...thus the term MIXTURE screw. And a PILOT screw simply meters fuel into the pilot circuit..turn in to lean the pilot circuit and out to richen the cicuit.
                            No doubt there is alot of confusion over the correct names for these screws. I checked the service manual which just shows an exploded view and just calls them adjusters, item 18 on page 8-6.

                            Now the parts fiche refers to them as "Pilot Air Screws" also item 18.
                            http://www.boulevardsuzuki.com/fiche_section_detail.asp?section=95412&category=Motorcycles&make=SUZUKI&year=1978&fveh=2146


                            Then we got Paul Musser's VM Carb Rebuild Guide that also refers to them as "Pilot Air Screws" on page 4.
                            http://members.dslextreme.com/users/bikecliff/images/vm_carb_rebuild.pdf
                            sigpic
                            Steve
                            "The world is a book, and those who do not travel read only one page." :cool:
                            _________________
                            '79 GS1000EN
                            '82 GS1100EZ

                            Comment

                              #15
                              Only air goes through it, it is an air screw. The fuel screw, only fuel goes through it, it is a fuel screw.

                              On the CV carbs, a premixed fuel air mixture goes through the screw, therefore it is a mixture screw.

                              Three entirely different concepts, three different names.
                              http://img.photobucket.com/albums/v5...tatesMap-1.jpg

                              Life is too short to ride an L.

                              Comment

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