Flywheel removal,85 GS750

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  • SVSooke
    • Jan 2026

    #1

    Flywheel removal,85 GS750

    Having a heck of a time getting the flywheel of the end of the crankshaft on my 85 GS750.Need to get it off to fix my starter clutch.Will button it up and order a puller if i need to,thread size is 14mm.
  • tom203
    Forum Guru
    Past Site Supporter
    • Aug 2010
    • 8925
    • Norway,Maine

    #2
    So you've tried threading in 14mm bolt till it hits crank,tap on bolt,tighten some more,rinse/repeat till rotor falls off taper?
    1981 gs650L

    "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

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    • SVSooke

      #3

      After looking at the manual again I can see they want to get something to attach to the outside threads.Can't do that today so she went back togetherYes I cleaned out the flywheel.

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      • SVSooke

        #4
        Anybody know the thread size for the flywheel?

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        • SVSooke

          #5
          Originally posted by SVSooke
          Anybody know the thread size for the flywheel?
          Nobody knows the thread size?

          Comment

          • tom203
            Forum Guru
            Past Site Supporter
            • Aug 2010
            • 8925
            • Norway,Maine

            #6
            Originally posted by SVSooke
            Nobody knows the thread size?
            Apparently not! What is the external diameter ? 32mm?
            Plus, I thought only the bigger motors had this external threaded hub. My 650 has 16 mm internal.
            1981 gs650L

            "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

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            • Locomotion

              #7
              An old trick on the 8 valve was using a slide hammer with the swing arm bolt that screws straight in the centre hole. Of course there's always the correct tool which can be found on fleabay

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              • SVSooke

                #8
                Originally posted by tom203
                Apparently not! What is the external diameter ? 32mm?
                Plus, I thought only the bigger motors had this external threaded hub. My 650 has 16 mm internal.
                I didn't think to put the caliper to it
                Originally posted by Locomotion
                An old trick on the 8 valve was using a slide hammer with the swing arm bolt that screws straight in the centre hole. Of course there's always the correct tool which can be found on fleabay
                No internal thread on this flywheel,#@*& *&#@#&$%^ %$*#*!

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                • Guest

                  #9
                  You need to get a puller and an impact.
                  I do believe that that is a small end crank.
                  It is a 35mm x 1.5 thread I believe.

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                  • SVSooke

                    #10
                    Originally posted by chef1366
                    You need to get a puller and an impact.
                    I do believe that that is a small end crank.
                    It is a 35mm x 1.5 thread I believe.
                    I suppose this is a Suzuki only thing and I need to buy a Suzuki specific puller.Any leads on where to get one?I have an impact.
                    Last edited by Guest; 07-16-2014, 04:08 PM.

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                    • tom203
                      Forum Guru
                      Past Site Supporter
                      • Aug 2010
                      • 8925
                      • Norway,Maine

                      #11
                      This is quite the tool! I'll bet you can find other uses for it- tenderizing meats maybe!

                      1981 gs650L

                      "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

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                      • SVSooke

                        #12
                        Fits a few other bikes,maybe my local dealer has one I can borrow

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                        • SVSooke

                          #13
                          He does and I can,a big hand to Ken at Kenco

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                          • Locomotion

                            #14
                            if there is no internal thread what actually holds rotor onto the end of the crank

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                            • tom203
                              Forum Guru
                              Past Site Supporter
                              • Aug 2010
                              • 8925
                              • Norway,Maine

                              #15
                              Originally posted by Locomotion
                              if there is no internal thread what actually holds rotor onto the end of the crank
                              Don't worry,there's still a bolt into crank end that holds rotor on taper!
                              1981 gs650L

                              "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

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