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  • ugh...continued carb problems!

    Well, I finally got the carbs back on, hooked up a battery and started my '79 xs11sf for the first time since I bought it in August of last year. Other than it immediately redlining (probably need to lube and adjust the throttle) I'm happy to report it actually started.

    This has led me to some additional questions though.

    1. There is a hose that is clipped to the front of the battery box. Where does it go?

    2. There is a small electrical box mounted below the battery box with a covered keyhole on it. Anyone know what it's for?

    3. The lock on the right side of the bike for the side cover is a round hole. I don't see this on the left side and the lock tab on the left cover is broken. How is it supposed to latch?

    4. I added the parts-n-more petcocks to the bike and neither the straight or 90 degree adapters that come with it seem to allow room for the fuel lines to go "straight" down to the T's. Anyone else run into this problem or have a suggestion to work around it

    5. For the idle screw, which way do I turn to lower the idle?

    Thanks,
    Clark

  • #2
    Clark,

    See if this helps

    1. There is a hose that is clipped to the front of the battery box. Where does it go?

    That’s a vent. It just sits in the little clip. Not connected to anything up top

    2. There is a small electrical box mounted below the battery box with a covered keyhole on it. Anyone know what it's for?

    Not sure what electrical box you are describing. I think you are talking about the left side cover lock. The left side cover on a Special locks. The key is used to release the side cover at the bottom so it can be removed to gain access to the battery

    3. The lock on the right side of the bike for the side cover is a round hole. I don't see this on the left side and the lock tab on the left cover is broken. How is it supposed to latch?

    There is no lock on the right side. The cover is held on with the friction of the rubber grommets and the tab

    4. I added the parts-n-more petcocks to the bike and neither the straight or 90 degree adapters that come with it seem to allow room for the fuel lines to go "straight" down to the T's. Anyone else run into this problem or have a suggestion to work around it.

    The stock petcocks have a 45 degree toward the center line of the bike and even those are tight. Sounds like you will have to get creative on your fuel line routing. Maybe plastic tube fittings from AutoZone ect may help you make the tight turns without kinking the lines.

    5. For the idle screw, which way do I turn to lower the idle?

    Out to decrease in to increase the idle speed

    You may be able to download an owner’s manual for your bike from Links page on this site. That and a maintenance manual will tell you what you need to know. If it’s not covered in either one some one on this site will have an answer. Great bunch of folks!
    wingnut
    81 SH (Daily Ride)
    81 650XJ (Brother in laws bike, Delivered)
    81 650XJ Jane Doe (Son's Ride)
    82 750XJ Project bike (Son in law's future ride)
    81 XS 400

    No man has a natural right to commit aggression on the equal rights of another; and this is all from which the laws ought to restrain him.”

    A government big enough to give you everything you want, is strong enough to take everything you have.

    Thomas Jefferson

    Comment


    • #3
      1. sounds like hose from back of fuel tank over flow
      2/3. key lock, left side of bike is for the side cover, should be "L" shaped female receptical for side cover tab
      4. ain't got a clue, I use OEM's
      5. main idle screw, "CCW" loosen lower RPM, "CW" tighten increase RPM



      mro

      Comment


      • #4
        Hi ya Clark/wingnut

        battery hose on my 80G is mounted on the left rear.

        mro
        btw

        check throatal cable w/engine off, should have a little slack.

        Comment


        • #5
          Vent tube

          I think, the little hose in the bracket is the vent tube from the middle gear
          wingnut
          81 SH (Daily Ride)
          81 650XJ (Brother in laws bike, Delivered)
          81 650XJ Jane Doe (Son's Ride)
          82 750XJ Project bike (Son in law's future ride)
          81 XS 400

          No man has a natural right to commit aggression on the equal rights of another; and this is all from which the laws ought to restrain him.”

          A government big enough to give you everything you want, is strong enough to take everything you have.

          Thomas Jefferson

          Comment


          • #6
            Thanks

            Ah...so the hose that attaches to the battery box is for a battery vent. I switched to a sealed battery so that didn't affect me.

            Does anyone have a picture of the left side cover latch so I can try to replicate it?

            I'll check out the plastic fittings and see if they will help. I need to get a couple "T"s ayaway to tie in both lines. I didn't realize until last night that the fuel line they had sold me at Pep boys was actually fuel injection hose so it was thicker.

            Thanks for the input guys! Hopefully I can get this beast running in time for a nice Fathers day morning ride :-D

            Clark

            Comment


            • #7
              Hey Clark,

              Congrats on getting it fired up!

              The lock on the right side is probably the wimpy chain lock that most folks either forgot, threw away, or removed!!

              As for routing the lines, I have mine crossed, so the left petcock feeds the right bank and vice versa, to reduce the kink affect, even though I'm a little "kinky" myself! BTW, don't use any of that fuel hose from the auto store, go to a bike shop and get some URETHANE 1/4" ID fuel line!!

              The idle thumbscrew turns CCW to reduce/lower the idle, CW to increase/raise it!

              Don't know of a hose attached to the battery box?? There is a slot on the end of the battery tray that the battery hose can fit down into to be routed down to the swingarm. Are you sure you mean battery box, and not Intake/air filter box?

              As was mentioned, there is a small hose that runs up from the middle gear vent, that is just vented to air just underneath the fuel tank, a clip on the frame holds it there, it runs in front of the battery box!?

              I'm pretty sure there's a tech tip, might be in MISC, about making your own latch to fix your broken one on your side cover!
              T.C.
              T. C. Gresham
              81SH "Godzilla" . . .1179cc super-rat.
              79SF "The Teacher" . . .basket case!
              History shows again and again,
              How nature points out the folly of men!

              Comment


              • #8
                Either go to http://www.yamaha-motor.com/sport/parts/home.aspx or http://www.bikebandit.com/PartsBandit/ and look your bike up. As on my 80LG is a hose that vents your battery. As the gases build up on the wet cell batteries they needed to be vented especially in hot weather. Of course if you are using a dry cell or gel cell battery then the vent is not present and the hose will not be needed. I still run a replacement battery I picked up at Walmart and they still come with a hose. Route the hose from the battery to a spot that in the event the battery acid should leak out it will not damage your paint or finish.
                2 - 80 LGs bought one new
                81 LH
                02 FXSTB Nighttrain
                22 FLTRK Road Glide Limited
                Jim

                Comment


                • #9
                  Thanks for the additional input guys. TC I'll try to get some additional fuel line and either do the cross-over or use some T's to get it to work. I'm pretty sure the hose I was refering to is the one for the battery (but since I have a sealed battery I don't need it).

                  I'll keep everyone posted on how it comes along...

                  Clark

                  Comment


                  • #10
                    so I loosened the idle screw as far as I could. Loosened the linkage at the throttle as much as I could and it still redlines on startup...well...correction, the first couple startups it starts out at about 1200 rpms, and quickly rises. After the first two attempts it goes immediately to redline. The linkage where the cable attaches to the carbs seems to have some play in it. I figure if it was the intake manifolds I would have trouble reving. Maybe I need a new cable (chances are the old cable came from a different bike). Any suggestions?

                    Clark

                    Comment


                    • #11
                      Yup. You have at least one run-away carb. You need to synchronize your carbs. Mine would start out OK at idle.. but warmed up just a minute.. would run up to about 5 grand... idle screw wouldn't even be touching the carb's linkage. I didn't read that you had done this after carb installation. Did you make sure all the floats were set right when you had them off? There is also a couple tricks to bench synching them to get them close, but you will still need to synch them right it sounds like to me.


                      Tod
                      Try your hardest to be the kind of person your dog thinks you are.

                      You can live to be 100, as long as you give up everything that would make you want to live to be 100!

                      Current bikes:
                      '06 Suzuki DR650
                      *'82 XJ1100 with the 1179 kit. "Mad Maxim"
                      '82 XJ1100 Completely stock fixer-upper
                      '82 XJ1100 Bagger fixer-upper
                      '82 XJ1100 Motor/frame and lots of boxes of parts
                      '82 XJ1100 Parts bike
                      '81 XS1100 Special
                      '81 YZ250
                      '80 XS850 Special
                      '80 XR100
                      *Crashed/Totalled, still own

                      Comment


                      • #12
                        some xs`s came with a lock and chain that was on the right hand side of the bike and locked in just a bit lower that the panel,,,

                        Comment


                        • #13
                          Answer to question #2

                          I found out what that covered keyhole is for. It is a reset for your electrical system. I was jumping my bike yesterday and I accidently (BRAIN FART!) hooked the cables backwards on my truck. My electrical went totally dead. I was paniced. I remembered seeing that keyhole and decided to give it a try. I stuck my key in it and turned it and when I put my key in the ignition, it worked. Apparently it is an electrical reset for you bikes system. It was pure dumb luck that I found out what is was for.
                          Bill

                          1980 XS 1100 Special
                          1979 650 Special - sold (Stupid Me!)

                          Comment


                          • #14
                            Hmm, not sure about that, Radiation. On every XS11 I own, the keyhole with the cover on it is the lock for the left hand sidecover. Many people have broken lock tabs on their left sidecover because they yank the cover off before realizing it is locked on.
                            Ken Talbot

                            Comment


                            • #15
                              The only electrical reset I've ever seen on ANY vehicle is a fuse.
                              1981 XS 1100 SH

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