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    #1

    Non-Rotating Throttle

    I cleaned and replaced all rings on the carbs and boots. When I put them back on the bike, (I'll tell you a trick I learn to make it super easy to do), the throttle only moves a quarter (1/4) of it total rotation.

    What would be the cause of this?

    W/O being connected to the carbs the throttle twists/rotates correctly. I am thinking that the "throttle pulley assembly" (do not know the exact technical term) on top of the 3rd & 4th carb needs to checked over for anything gumming it up. OR I just need to put a little lubrication on it to get things loose again.
    Tags: None
    #2
    have you had the carbs stripped and rebuilt back up again?
    sounds like you have refitted part of the throttle linkage incorrectly....
    1978 GS1085.

    Just remember, an opinion without 3.14 is just an onion!

    Comment

      #3
      TRICK -- My first try to get the carbs back into the boots & connect them to the engine failed miserably. I'd get one side in & then when trying to get the other, the "in" one would popped out. UGH! Tried- angling from the bottom to the top insert. NOPE! Tried angling from the top to the bottom insert. NOPE! Tried - once all were line up correctly using a 2x4 to pull evenly. NOPE! Every trick I could think of trying failed.
      So, off to the web to see what others had done. Now in my search there were bunches about removing carbs; nothing specific about reattaching. The closest I found; (on a completely different make & model of bike); one guy said, to put Marvel Mystery Oil (MMO) liberally on bunch on a rag and wipes the inside & outside of the boots with it. I did this and I let mine sit overnight. The next day when I tried to put the carbs back in, BAM! They slide back on with minimal exertion.

      My boots were not super hard or brittle. If yours are you may want to replace them. Putting the MMO on the boots seems to have allowed mine to be just a bit more malleable & provided enough of a slick surface to let the carbs slide back on.

      If you all think this is a good enough trick that it should be posted in the Tips & Tricks section, let me know.

      Comment

        #4
        Originally posted by Agemax View Post
        have you had the carbs stripped and rebuilt back up again?
        sounds like you have refitted part of the throttle linkage incorrectly....
        That's the way I am leaning. If later today is supposed to be as yucky as they say, then I remove & look them over. I was just hoping to not have to do this.

        The easy "hopes" with getting an old bike running again, seem to be squashed rather often!

        Comment

          #5
          take the carbs off the bike and manually open the throttle linkage (where the cables attaches) see if you can see anything physically stopping the mechanism from opening fully
          1978 GS1085.

          Just remember, an opinion without 3.14 is just an onion!

          Comment

            #6
            Any chance that you have a slide in 180 degrees off ?

            Comment

              #7
              Gotta play with the kid while weather is still nice enough. I'll let you all know later tonight what I find out.

              Comment

                #8
                Scrum....I dont like oily stuff on my boots, so what I do is this.

                Bike on center stand.

                Bungee wrapped around the brake lever to hold the front brakes.

                Just wet the throats of the carbs wet with some water. The water will soon evaporate from the area and allow the rubber to actually SEAL ( key word here is SEAL ) against the carb throats.

                Be sure your band clamps are not stretched either..replace if the two flanges get within touching each other range when you tighten the 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

                  #9
                  Dave...slides cant go in 180 out...the linkage wont allow that to happen...and the slot that lines up with the dimple in the slide tower wont either.

                  CV carbs are a no brainer as long as you get the little rubber tab in the spot for it.
                  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

                    #10
                    Originally posted by chuck hahn View Post
                    Dave...slides cant go in 180 out...the linkage wont allow that to happen...and the slot that lines up with the dimple in the slide tower wont either.

                    CV carbs are a no brainer as long as you get the little rubber tab in the spot for it.
                    They can on a Honda. Haven't had that problem with my Suzies however, I also have rebuilt a rack or seven.

                    Comment

                      #11
                      So what does Honda carbs have to do with his GS problem?????
                      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

                        #12
                        I'm not going to argue with you over this, Chuck.

                        You da king...

                        Comment

                          #13
                          I just asked a simple question Dave.

                          GS carbs have a witness slot and a dimple to align them in the towers so they CAN NOT go in wrong. The only way the linkage can be backwards is if the linkage is unscrewed from the top of the slide and reinstalled 180 out.

                          Even then, when you put a slide in with the linkage 180 out, you can bend it back to even get the throttle rod to pass thru..so yeah I do know what I am talking about from making that exact mistake once..so your right, theres no arguement because I AM right!!!!

                          And thus..he wouldnt have been able to EVEN REMOTELY reassemble the rack in any way.
                          Last edited by chuck hahn; 05-11-2013, 12:14 PM.
                          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
                            My theory is he has the throttle cables in the wrong spot and should swap them around. Simple mistake. I always twist the grip to see which one goes to the front and which goes to the back. That way I dont get them confused.

                            Yeah...I have done this one too. Only one is the puller. He is only getting that 1/4 turn because there is slop in the cables and once its taken up the grip stops.

                            He needs to swap the cables around and then adjust the slop out of the cables..especially the pulling side so he has a nice quick roll on at the grip.
                            Last edited by chuck hahn; 05-11-2013, 12:21 PM.
                            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

                              #15
                              Originally posted by chuck hahn View Post
                              My theory is he has the throttle cables in the wrong spot and should swap them around. Simple mistake. I always twist the grip to see which one goes to the front and which goes to the back. That way I dont get them confused.

                              Yeah...I have done this one too. Only one is the puller.
                              Sounds favourite to me as well Chuck.
                              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

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