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DT125R FORUM

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  4. Yamaha dt125re rebuild

Yamaha dt125re rebuild

Scheduled Pinned Locked Moved DTRE
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  • B BraDT

    @Calum so clutch cover off any need to remove the clutch basket or anything else?

    Really didn’t wanna tip the engine apart on this build wanted it to be simple and learn as I go but I have learnt it will never be a simple job 🤣

    CalumC Offline
    CalumC Offline
    Calum
    wrote on last edited by
    #52

    @bradt If you damage the shaft, it will always leak oil and you will need a new shaft. It's just hacky to do it in situe, but can be done.

    I can't remember how it is on these engines, what is in the way.

    alt text

    But that should be pulled out from the clutch cover side. You don't need to remove it, just pull it clear of the oil seal so you don't damage it.

    Always Originate, Never Pirate!

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    • B BraDT

      @Calum so clutch cover off any need to remove the clutch basket or anything else?

      Really didn’t wanna tip the engine apart on this build wanted it to be simple and learn as I go but I have learnt it will never be a simple job 🤣

      declanD Offline
      declanD Offline
      declan
      wrote on last edited by
      #53

      @bradt I just levered it out with a small flat head cleaned up then pushed the other in I didn’t do nothing special but taking out the shaft is sensible just not for me

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      • J Offline
        J Offline
        Jens Eskildsen
        wrote on last edited by
        #54

        Id just replace it aswell, its pretty common to do, And I've done so many times on other bikes, both for the gear selector shaft, and the main output shaft.

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        • B Offline
          B Offline
          BraDT
          wrote on last edited by
          #55

          Got it sorted removed the shaft like Calum said wasn’t to hard but that another box ticked on the list

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          • B Offline
            B Offline
            BraDT
            wrote on last edited by Mightyman
            #56

            So got back from work yesterday to find out the other half has been shopping for me and started without me


            So she has painted my Caliper in blue and my brackets in black

            Deffo a keeper this one 👍🏻

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            • B Offline
              B Offline
              BraDT
              wrote on last edited by Mightyman
              #57

              So iv fell massively behind new job etc house problems the list goes on

              But we’re not far off
              New job means this is going to be a daily user for work so need it back on the road and sorted until I get a company car

              Another things is there anyone close to Sheffield or willing to travel for abit of light off-roading in the Peak District or just general meeting ?

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              • B Offline
                B Offline
                BraDT
                wrote on last edited by Mightyman
                #58

                So after loosing all my photos phone crashed etc etc iv managed to save what I could a upload these few .

                Only a few bits left to do gearbox oil etc to go in.

                Most bits now will just been cleaned and placed in as need it for work ASAP.

                Will loads what iv got left on my phone but all I have at the minute.

                Only picture I have to hand will be coming out in the sunshine this week

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                • CalumC Offline
                  CalumC Offline
                  Calum
                  wrote on last edited by
                  #59

                  Is that what you want to do is it, use it as a daily work horse?

                  Mine never let me down. Great commuter.

                  Always Originate, Never Pirate!

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                  • B Offline
                    B Offline
                    BraDT
                    wrote on last edited by
                    #60

                    When I first started rebuilding it wasn’t the idea was just gunna be a weekend toy have a good blast around every now and again but things change so until I get my company car it will be used
                    But with it nearly finished it’s not the best build and not the cleanest and already pricing everything up for a full nut and bolt rebuild and making everything original to keep its value but that’s a long way off

                    Already keeping my eyes open for something else for a project something I don’t need to use as really enjoyed doing this.

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                    • B Offline
                      B Offline
                      BraDT
                      wrote on last edited by
                      #61

                      Has anyone got a guide on how to bleed my autolube ? Iv had all the oil out and haven’t a clue how to bleed the sysytem ?

                      Any help muchly appreciated

                      declanD 1 Reply Last reply
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                      • B BraDT

                        Has anyone got a guide on how to bleed my autolube ? Iv had all the oil out and haven’t a clue how to bleed the sysytem ?

                        Any help muchly appreciated

                        declanD Offline
                        declanD Offline
                        declan
                        wrote on last edited by
                        #62

                        @bradt best way is to run premix in your bike while running with the autolube full bleed the lines there will be a rubber blanking cap on the pump pull that off While the bike is running on premix and when the air bubbles stop coming out plug it back up then watch the flow coming from the pump to engine best use clear lines so you can see the air bubbles then when there’s no bubbles your good to switch back to autolube fully

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                        • B Offline
                          B Offline
                          BraDT
                          wrote on last edited by Mightyman
                          #63

                          Cheers mate ordered some clear lines

                          Bike all ready now, but have noticed a leak from the carb guessing bowl gasket needs replacing

                          Auto lube needs bleeding also and she ready for her first start

                          First time out the garage in a few months quick wipe down and a polish

                          CalumC 1 Reply Last reply
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                          • B BraDT

                            Cheers mate ordered some clear lines

                            Bike all ready now, but have noticed a leak from the carb guessing bowl gasket needs replacing

                            Auto lube needs bleeding also and she ready for her first start

                            First time out the garage in a few months quick wipe down and a polish

                            CalumC Offline
                            CalumC Offline
                            Calum
                            wrote on last edited by
                            #64

                            @bradt Mean rear tyre. I hope you plan on taking this offroad!

                            Always Originate, Never Pirate!

                            declanD 1 Reply Last reply
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                            • CalumC Calum

                              @bradt Mean rear tyre. I hope you plan on taking this offroad!

                              declanD Offline
                              declanD Offline
                              declan
                              wrote on last edited by Mightyman
                              #65

                              @calum (insert generic Australian accent) that’s not a tyre, THIS is a tyre!

                              https://imgur.com/a/rSZ5X47

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                              • B Offline
                                B Offline
                                BraDT
                                wrote on last edited by
                                #66

                                Light off-roading yeah as I’m using for work need it really can do without it breaking down!

                                Just that leak to sort out now and struggling to locate one for today as need the bike tomorrow 😑 any local to Sheffield and wanna source a spare bowl gasket ?

                                CalumC 1 Reply Last reply
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                                • B BraDT

                                  Light off-roading yeah as I’m using for work need it really can do without it breaking down!

                                  Just that leak to sort out now and struggling to locate one for today as need the bike tomorrow 😑 any local to Sheffield and wanna source a spare bowl gasket ?

                                  CalumC Offline
                                  CalumC Offline
                                  Calum
                                  wrote on last edited by
                                  #67

                                  @bradt Literally go and make one.

                                  Go to Halfrauds or a MotorWorld and just buy gasket paper.

                                  Always Originate, Never Pirate!

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                                  • B Offline
                                    B Offline
                                    BraDT
                                    wrote on last edited by
                                    #68

                                    So will try gasket paper as silicone has stopped the leak but still seems like I’m not getting fuel to the spark ? Anything else I need to check ? All carb was cleaned out new filter in there etc getting abit stressed now

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                                    • B Offline
                                      B Offline
                                      BraDT
                                      wrote on last edited by
                                      #69

                                      This is a lot harder without electric start working so having to bump the bike every time I try and start it

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                                      • B Offline
                                        B Offline
                                        BraDT
                                        wrote on last edited by
                                        #70

                                        Does anyone know where the black wire (I’m guess an earth) on the coil is meant to go

                                        Iv just fitted a new startermotor to the build makes it easier to start and found I have no coil

                                        Noticed the black wire with hook was connected to the coil itself should this be earthed to frame or is this right ?

                                        1 Reply Last reply
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                                        • 2 Offline
                                          2 Offline
                                          2Stroke4Smoke
                                          wrote on last edited by
                                          #71

                                          The starter motor has a red wire only which connects to the starter solenoid (this is the square thing with two fuses in it by the battery). There is a black wire with a hook which connects to the neutral switch which is located near to the starter motor at the bottom of the engine casing on the flywheel side. this in turn plugs into the part of the loom which goes into the stator/generator coil via a bullet connector. Hope this helps.

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