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DT125R FORUM

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  4. Weird problem after oil change

Weird problem after oil change

Scheduled Pinned Locked Moved Engine
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  • MiniaM Offline
    MiniaM Offline
    Minia
    wrote on last edited by
    #12

    The thing is we can't really see how much it is vibrating, personally I don't think it is much of a problem. All of my 2-stroke off-road bikes have vibrated, most notably my GasGas. After 10 minutes of full throttle you won't be able to feel your feet. How many miles has that engine got? If your bike is vibrating more than you believe it needs to, it would make me think the problem is a bigger one. I'd check the engine mounts, however unlikely it is.

    Yamaha DT125R Blue 2002, XT 125 1982, Yamaha WR250Z 1992, BMW GS650F 1994, Benelli BN302 2015

    B 1 Reply Last reply
    1
    • MiniaM Minia

      The thing is we can't really see how much it is vibrating, personally I don't think it is much of a problem. All of my 2-stroke off-road bikes have vibrated, most notably my GasGas. After 10 minutes of full throttle you won't be able to feel your feet. How many miles has that engine got? If your bike is vibrating more than you believe it needs to, it would make me think the problem is a bigger one. I'd check the engine mounts, however unlikely it is.

      B Offline
      B Offline
      Bananper
      wrote on last edited by
      #13

      @minia around 24k, the engine has been rebuilt by an mc shop when the previous owner had it. It has never been shaking like this, just came out of nowhere

      CalumC 1 Reply Last reply
      0
      • B Bananper

        @minia around 24k, the engine has been rebuilt by an mc shop when the previous owner had it. It has never been shaking like this, just came out of nowhere

        CalumC Offline
        CalumC Offline
        Calum
        wrote on last edited by
        #14

        @bananper If that engines been split, then they either haven't timed the engine correctly, or the clutch hasn't been assembled properly.

        Either way easy job to fix, engine in the frame jobby.

        Always Originate, Never Pirate!

        B 1 Reply Last reply
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        • B Offline
          B Offline
          Bananper
          wrote on last edited by Bananper
          #15

          @Calum @declan @finnerz89 @Minia

          Looks like i've found the problem, only thing is that that the clutch basket is loose and i dont think its supposed to be that way

          http://imgur.com/a/0ZTcq96

          CalumC 1 Reply Last reply
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          • B Bananper

            @Calum @declan @finnerz89 @Minia

            Looks like i've found the problem, only thing is that that the clutch basket is loose and i dont think its supposed to be that way

            http://imgur.com/a/0ZTcq96

            CalumC Offline
            CalumC Offline
            Calum
            wrote on last edited by
            #16

            @bananper The clutch basket is fastened in with a nut and a tab washer.

            Always Originate, Never Pirate!

            B 1 Reply Last reply
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            • CalumC Calum

              @bananper The clutch basket is fastened in with a nut and a tab washer.

              B Offline
              B Offline
              Bananper
              wrote on last edited by
              #17

              @calum what torque is it supposed to have

              CalumC 1 Reply Last reply
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              • B Bananper

                @calum what torque is it supposed to have

                CalumC Offline
                CalumC Offline
                Calum
                wrote on last edited by
                #18

                @bananper Have to check the manual I'm afraid. I'd image it's pretty high and you will need to lock off the crankshaft to do it.

                Always Originate, Never Pirate!

                B 1 Reply Last reply
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                • CalumC Calum

                  @bananper Have to check the manual I'm afraid. I'd image it's pretty high and you will need to lock off the crankshaft to do it.

                  B Offline
                  B Offline
                  Bananper
                  wrote on last edited by
                  #19

                  @calum i'll take the bike to my local mc shop and let them have a look on it, i think the bearing located behind the clutch bucket is bad

                  1 Reply Last reply
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                  • MiniaM Offline
                    MiniaM Offline
                    Minia
                    wrote on last edited by
                    #20

                    @Bananper A loose clutch basket seems like a good culprit, but you need to know why it is loose. Or what made it loose. Well anyway, if you're taking it to a local shop they should be able to find and fix the problem. Afterall, the DT engine is pretty easy to work with.

                    Yamaha DT125R Blue 2002, XT 125 1982, Yamaha WR250Z 1992, BMW GS650F 1994, Benelli BN302 2015

                    1 Reply Last reply
                    1
                    • B Offline
                      B Offline
                      Bananper
                      wrote on last edited by
                      #21

                      Is the basket supposed to sit really thight or should there be some movement? It's not very loose, just a tiny bit. Do i need to split the engine to change the bearing behind the basket?

                      declanD 1 Reply Last reply
                      0
                      • B Bananper

                        Is the basket supposed to sit really thight or should there be some movement? It's not very loose, just a tiny bit. Do i need to split the engine to change the bearing behind the basket?

                        declanD Offline
                        declanD Offline
                        declan
                        wrote on last edited by
                        #22

                        @bananper any movement will be highly exaggerated when the engine is running don’t use the bike you will easily destroy something my 250 is about 80nm I just stuck a ratchet on there and cranked it don’t (don’t do what I do)

                        1 Reply Last reply
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                        • F Offline
                          F Offline
                          finnerz89
                          wrote on last edited by
                          #23

                          Am I the only one who's noticed the chunk missing from the pressure plate? Lol

                          I'd like the know where the missing piece went

                          Current bikes:
                          DT125X '07
                          Street Triple R '11
                          Aprilia ETV1000 '02

                          Previous:
                          DR650RSE '96
                          FJ1200 '92

                          CalumC 1 Reply Last reply
                          1
                          • F finnerz89

                            Am I the only one who's noticed the chunk missing from the pressure plate? Lol

                            I'd like the know where the missing piece went

                            CalumC Offline
                            CalumC Offline
                            Calum
                            wrote on last edited by
                            #24

                            @finnerz89 That's some beady eyes you have on you.

                            Without that, the spring won't torque down properly.

                            I can't say what real world difference that will actually make, but it might be enough to cause a problem.

                            Always Originate, Never Pirate!

                            F 1 Reply Last reply
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                            • B Offline
                              B Offline
                              Bananper
                              wrote on last edited by
                              #25

                              Yup, i'm getting a new pressure plate obviously. I took the bucket of, and the axle is moving a little bit, it shouldn't move right?

                              1 Reply Last reply
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                              • B Offline
                                B Offline
                                Bananper
                                wrote on last edited by
                                #26
                                This post is deleted!
                                1 Reply Last reply
                                0
                                • B Offline
                                  B Offline
                                  Bananper
                                  wrote on last edited by Bananper
                                  #27

                                  Is this too much? It moves about 2mm
                                  https://youtu.be/3ZEvNP-LKpU

                                  Irongamer727I 1 Reply Last reply
                                  0
                                  • B Bananper

                                    Is this too much? It moves about 2mm
                                    https://youtu.be/3ZEvNP-LKpU

                                    Irongamer727I Offline
                                    Irongamer727I Offline
                                    Irongamer727
                                    wrote on last edited by
                                    #28

                                    @bananper that's fine

                                    1 Reply Last reply
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                                    • CalumC Calum

                                      @finnerz89 That's some beady eyes you have on you.

                                      Without that, the spring won't torque down properly.

                                      I can't say what real world difference that will actually make, but it might be enough to cause a problem.

                                      F Offline
                                      F Offline
                                      finnerz89
                                      wrote on last edited by
                                      #29

                                      @calum I'm like a hawk mate 😂

                                      Current bikes:
                                      DT125X '07
                                      Street Triple R '11
                                      Aprilia ETV1000 '02

                                      Previous:
                                      DR650RSE '96
                                      FJ1200 '92

                                      1 Reply Last reply
                                      0
                                      • CalumC Calum

                                        @bananper If that engines been split, then they either haven't timed the engine correctly, or the clutch hasn't been assembled properly.

                                        Either way easy job to fix, engine in the frame jobby.

                                        B Offline
                                        B Offline
                                        Bananper
                                        wrote on last edited by
                                        #30

                                        @calum i am starting to suspect the balancing shaft more and more... how do i go on to check it, and time it properly?

                                        CalumC 1 Reply Last reply
                                        0
                                        • B Bananper

                                          @calum i am starting to suspect the balancing shaft more and more... how do i go on to check it, and time it properly?

                                          CalumC Offline
                                          CalumC Offline
                                          Calum
                                          wrote on last edited by Calum
                                          #31

                                          @bananper Whip the clutch cover off, whip the clutch basket off.

                                          Rotate the crank shafter around. The two dots on the primary shaft cog and the balancer shaft cog should meet. If they don't then the timing is out.

                                          It does destroy bearings, but you should get away with just sorting it.

                                          If it's not that, then it's either a rough engine, clutch imbalance or lose/worn engine mounts.

                                          Always Originate, Never Pirate!

                                          B 1 Reply Last reply
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