Extra Part?

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  • Roostabunny
    • Feb 2026
    #1

    Extra Part?

    OK, so I'm finally doing my carb re-build to eliminate those as the cause of my power loss on cylinder 1. It was either this or start replacing valve oil seals, and this seems the easier job.

    So last night I got the carbs off the bike and got them seperated - no thanks to some semi-stripped phillips screws on the lower gang plate (note to self - stop by Ace Hardware on the way home).

    The extra part in question is a washer that stayed pinched between the spring-loaded brass plunger and the sync adjusting screw on the #3 carb throttle lever. Looks like the PO or someone used this washer as a shim (to get the sync right?), but I wanted to make sure it didn't belong there. It's only on one carb - if it weren't #3 I might not even have asked. I don't see it in any schematics or pics in the shop manual.

    I'm also open to any theories on what the person who did this was trying to accomplish - why a shim when there's an adjustment screw?

    I'll take a pic tonight if that'll help - didn't have the camera handy last night.
    Tags: None
    • Dave8338
      Forum LongTimer
      Past Site Supporter
      • Aug 2006
      • 11608
      • Annandale, MN
      #2
      I quess I'de need a picture for that one? Not sure without seeing the rack as to why it would be there.

        Comment

        • Roostabunny
          #3
          Originally posted by Dave8338
          I quess I'de need a picture for that one? Not sure without seeing the rack as to why it would be there.
          Here's one. It's actually carb #2. Sorry about that.

            Comment

            • Roostabunny
              #4
              Originally posted by Dave8338
              I quess I'de need a picture for that one? Not sure without seeing the rack as to why it would be there.
              So it was between #2 and #3.

                Comment

                • salty_monk
                  Forum LongTimer
                  GSResource Superstar
                  Past Site Supporter
                  Super Site Supporter
                  • Oct 2006
                  • 14001
                  • London, UK to Redondo Beach, California
                  #5
                  Maybe they replaced the screw with one with a head that was too small & the spring was coming past the head....

                  Maybe it's an aftermarket spring that's bigger diameter & going past the stock screw??

                  I likely have a spare somewhere if you need one.

                  Dan
                  1980 GS1000G - Sold
                  1978 GS1000E - Finished!
                  1980 GS550E - Fixed & given to a friend
                  1983 GS750ES Special - Sold
                  2009 KLR 650 - Sold - gone to TX!
                  1982 GS1100G - Rebuilt and finished. - Sold
                  2009 TE610 - Dual Sporting around dreaming of Dakar..... - FOR SALE!

                  www.parasiticsanalytics.com

                  TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

                    Comment

                    • Guest
                      #6
                      That's where the throttle plates hook together from the seperated carbs. Lose the washer and see if you can get a good bench sync.

                        Comment

                        • Roostabunny
                          #7
                          Originally posted by salty_monk
                          Maybe they replaced the screw with one with a head that was too small & the spring was coming past the head....

                          Maybe it's an aftermarket spring that's bigger diameter & going past the stock screw??

                          I likely have a spare somewhere if you need one.

                          Dan
                          I think the spring is just right - removing the washer doesn't look to effect it. I'll take a closer look at that, and if everything's in order...

                          Originally posted by chef1366
                          That's where the throttle plates hook together from the seperated carbs. Lose the washer and see if you can get a good bench sync.
                          ...I'll do this.

                          Thanks fellas!

                            Comment

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