Skip to content
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
Skins
  • Light
  • Cerulean
  • Cosmo
  • Flatly
  • Journal
  • Litera
  • Lumen
  • Lux
  • Materia
  • Minty
  • Morph
  • Pulse
  • Sandstone
  • Simplex
  • Sketchy
  • Spacelab
  • United
  • Yeti
  • Zephyr
  • Dark
  • Cyborg
  • Darkly
  • Quartz
  • Slate
  • Solar
  • Superhero
  • Vapor

  • Default (Slate)
  • No Skin
Collapse
Brand Logo

DT125R FORUM

  1. Home
  2. Owners Build Threads
  3. DTRE
  4. Yamaha dt125re rebuild

Yamaha dt125re rebuild

Scheduled Pinned Locked Moved DTRE
92 Posts 13 Posters 17.0k Views
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • 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
    0
    • 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 Online
      CalumC Online
      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
      0
      • 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

        1 Reply Last reply
        0
        • 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
          0
          • 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 Online
            CalumC Online
            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!

            1 Reply Last reply
            0
            • 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

              1 Reply Last reply
              0
              • 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

                1 Reply Last reply
                0
                • 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
                  0
                  • 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.

                    1 Reply Last reply
                    0
                    • B Offline
                      B Offline
                      BraDT
                      wrote on last edited by BraDT
                      #72

                      @2Stroke4Smoke very helpful went through all wire and found a broken wire replaced and fixed nice bright sparks and fired up

                      Thank you

                      2 1 Reply Last reply
                      1
                      • B BraDT

                        @2Stroke4Smoke very helpful went through all wire and found a broken wire replaced and fixed nice bright sparks and fired up

                        Thank you

                        2 Offline
                        2 Offline
                        2Stroke4Smoke
                        wrote on last edited by
                        #73

                        @bradt Glad you got it sorted 🙂

                        1 Reply Last reply
                        1
                        • B Offline
                          B Offline
                          BraDT
                          wrote on last edited by
                          #74

                          So last night after during the match I decided to take the bike for a ride out see how everything was , bike felt great really responsive but loud but exhaust needs sorting

                          Come out for work this morning bike fired up felt great work is only 5mile away iv got just round the corner and my red light came on and the bike was steaming pretty bad I coasted it to work and iv lost all my coolant I’m aware this could be down to the head gasket but I’m hoping it may be something else.

                          There was pressure in the radiator when I took the cap off and the expansion bottle cap has stayed on any one know what else to check before I order a head gasket ?

                          Thanks

                          1 Reply Last reply
                          0
                          • B Offline
                            B Offline
                            BraDT
                            wrote on last edited by Mightyman
                            #75

                            Her she is looking pretty 🤔

                            Irongamer727I 1 Reply Last reply
                            0
                            • B BraDT

                              Her she is looking pretty 🤔

                              Irongamer727I Offline
                              Irongamer727I Offline
                              Irongamer727
                              wrote on last edited by
                              #76

                              @bradt have you bled the system of air?

                              1 Reply Last reply
                              0
                              • B Offline
                                B Offline
                                BraDT
                                wrote on last edited by
                                #77

                                I did but maybe not long enough cannot see where the coolant is coming from it’s just dried all white over the barrel and head

                                declanD 1 Reply Last reply
                                0
                                • B BraDT

                                  I did but maybe not long enough cannot see where the coolant is coming from it’s just dried all white over the barrel and head

                                  declanD Offline
                                  declanD Offline
                                  declan
                                  wrote on last edited by declan
                                  #78

                                  @bradt coolant doesent dry I’ve had my fair share of leaks on hot engines and never seen it dry

                                  1 Reply Last reply
                                  0
                                  • B Offline
                                    B Offline
                                    BraDT
                                    wrote on last edited by
                                    #79

                                    @declan surely any liquid would dry and leave some kind of substance after touching a hot engine. Iv reckon iv found the culprit there a little house what connect to carbs what isn’t fully on and can see it coming from there but the amount iv lost surely hasn’t come from there I’m unsure tired and frustrated and still gotta rude home on it tonight after work!

                                    CalumC 1 Reply Last reply
                                    0
                                    • B BraDT

                                      @declan surely any liquid would dry and leave some kind of substance after touching a hot engine. Iv reckon iv found the culprit there a little house what connect to carbs what isn’t fully on and can see it coming from there but the amount iv lost surely hasn’t come from there I’m unsure tired and frustrated and still gotta rude home on it tonight after work!

                                      CalumC Online
                                      CalumC Online
                                      Calum
                                      wrote on last edited by
                                      #80

                                      @bradt Be alright, just take a bottle of water with you. Don't open that radiator cap until it's cooled mind you!

                                      Always Originate, Never Pirate!

                                      1 Reply Last reply
                                      0
                                      • B Offline
                                        B Offline
                                        BraDT
                                        wrote on last edited by
                                        #81

                                        So iv got back and did a little test on the way,

                                        So when I’m cruising (not full throttle) the bike fine doesn’t smoke out the exhaust and no steam off the engine, so on a little open bit of road iv throttled the bike started slowing down and there u go smoke and steam

                                        So seams to me when the pv kicks in I’m loosing coolant any ideas ??

                                        2 1 Reply Last reply
                                        0
                                        • B BraDT

                                          So iv got back and did a little test on the way,

                                          So when I’m cruising (not full throttle) the bike fine doesn’t smoke out the exhaust and no steam off the engine, so on a little open bit of road iv throttled the bike started slowing down and there u go smoke and steam

                                          So seams to me when the pv kicks in I’m loosing coolant any ideas ??

                                          2 Offline
                                          2 Offline
                                          2Stroke4Smoke
                                          wrote on last edited by
                                          #82

                                          @bradt Head gasket failure, happened to me two weeks ago. The water pump is driven off the crank so the higher the engine speed the more water is pumped round the engine and thus the more pressure in the cooling system so the higher the engine speed the more coolant will be lost to the crankcase. Just order a new one as it isn't a problem that will fix itself but rather will leave you stranded when you most need to get home! - I used an Athena head gasket and so far no issues, I think it was around £15.00 off ebay. It's pretty straightforward job, you'll need to check that the head isn't warped before reassembly by putting it on a known flat surface i.e a glass table or a granite work top and if you can rock it side to side, then it is warped. If it's warped you'll need to have it skimmed before reassembly - you can do this yourself or have someone do it for you.

                                          1 Reply Last reply
                                          2
                                          Reply
                                          • Reply as topic
                                          Log in to reply
                                          • Oldest to Newest
                                          • Newest to Oldest
                                          • Most Votes


                                          • Login

                                          • Don't have an account? Register

                                          • Login or register to search.
                                          • First post
                                            Last post
                                          0
                                          • Recent
                                          • Tags
                                          • Popular
                                          • Users
                                          • Groups