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DT125R FORUM

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  4. Derestrict yamaha dt 125 r 1997

Derestrict yamaha dt 125 r 1997

Scheduled Pinned Locked Moved Derestricting
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  • S SpookDog

    @Mr-Shadi

    Have you moved the bulb as far away as you could from where it was? I thought it was behind the rev counter?
    What country are you in? Is the bike native to your country? I’ve never heard of a dt125rn!

    Try putting it back and seeing if the bike at least ‘settles down’!…

    At least something is happening, even if it’s not what you want! It can (sometimes!) help to diagnose the problems 🙂 …

    Mr ShadiM Offline
    Mr ShadiM Offline
    Mr Shadi
    wrote on last edited by Mr Shadi
    #34

    @SpookDog i put it away as far as i can but the wire holding rubber is in the way and its near metal if that does anything. the bike is from germany and its in estonia where i am from. i found out that the rn exists trough www.motomike.eu it has parts for that model. and im gonna mess with it again tomorrow cause its 22.29 for me right now and i will go to sleep. Thank you for the help 🙂

    Mr ShadiM 1 Reply Last reply
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    • Mr ShadiM Mr Shadi

      @SpookDog i put it away as far as i can but the wire holding rubber is in the way and its near metal if that does anything. the bike is from germany and its in estonia where i am from. i found out that the rn exists trough www.motomike.eu it has parts for that model. and im gonna mess with it again tomorrow cause its 22.29 for me right now and i will go to sleep. Thank you for the help 🙂

      Mr ShadiM Offline
      Mr ShadiM Offline
      Mr Shadi
      wrote on last edited by Mr Shadi
      #35

      ee14fef3-2273-4a5f-b007-947d8f37199c-image.png from motomike when you put in these settings 2a475a49-4a41-48ac-8859-689570733eaf-image.png

      S 1 Reply Last reply
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      • Mr ShadiM Mr Shadi

        ee14fef3-2273-4a5f-b007-947d8f37199c-image.png from motomike when you put in these settings 2a475a49-4a41-48ac-8859-689570733eaf-image.png

        S Offline
        S Offline
        SpookDog
        wrote on last edited by SpookDog
        #36

        @Mr-Shadi

        Have you reconnected the CDI wiring up properly? The reed switch tells the CDI when the bikes doing 60mph then the CDI restricts the revs…

        Get it all running properly before even trying to de-restrict it…

        Also disconnecting the speedo cable should work, as the bike won’t ‘know’ it’s doing 60…

        Mr ShadiM 1 Reply Last reply
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        • S SpookDog

          @Mr-Shadi

          Have you reconnected the CDI wiring up properly? The reed switch tells the CDI when the bikes doing 60mph then the CDI restricts the revs…

          Get it all running properly before even trying to de-restrict it…

          Also disconnecting the speedo cable should work, as the bike won’t ‘know’ it’s doing 60…

          Mr ShadiM Offline
          Mr ShadiM Offline
          Mr Shadi
          wrote on last edited by
          #37

          @SpookDog i have looked over the wiring and its good and the cdi wiring is good, but the reed switch wires were broken at one point and i melted the wires together with a soldering iron.
          But im doing a full rebuild in a couple of months then ill know if something is broken and i think i will document it here.

          Mr ShadiM 1 Reply Last reply
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          • Mr ShadiM Mr Shadi

            @SpookDog i have looked over the wiring and its good and the cdi wiring is good, but the reed switch wires were broken at one point and i melted the wires together with a soldering iron.
            But im doing a full rebuild in a couple of months then ill know if something is broken and i think i will document it here.

            Mr ShadiM Offline
            Mr ShadiM Offline
            Mr Shadi
            wrote on last edited by
            #38

            @Mr-Shadi i moved the reed switch, cut wires and did a lot of things but when the reed is out of its slot the bike won't rev over 6k in 2nd 3rd 4th 5th and 6th gear, but when the reed is in its slot it only doesn't rev when 80km/h. I even pulled the reed out a little bit and it didnt rev over 6k. Very weird

            S markus.wM 2 Replies Last reply
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            • Mr ShadiM Mr Shadi

              @Mr-Shadi i moved the reed switch, cut wires and did a lot of things but when the reed is out of its slot the bike won't rev over 6k in 2nd 3rd 4th 5th and 6th gear, but when the reed is in its slot it only doesn't rev when 80km/h. I even pulled the reed out a little bit and it didnt rev over 6k. Very weird

              S Offline
              S Offline
              SpookDog
              wrote on last edited by
              #39

              @Mr-Shadi
              That is weird! It’s good that you’re experimenting with it…
              I think that you might have the one that needs a CDI wire cut and earthed. I’ll try and do some reading and let you know 🙂 …

              S 1 Reply Last reply
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              • S SpookDog

                @Mr-Shadi
                That is weird! It’s good that you’re experimenting with it…
                I think that you might have the one that needs a CDI wire cut and earthed. I’ll try and do some reading and let you know 🙂 …

                S Offline
                S Offline
                SpookDog
                wrote on last edited by
                #40

                Look for a green/black wire on your CDI unit. Let me know if you find one…

                Mr ShadiM 1 Reply Last reply
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                • S SpookDog

                  Look for a green/black wire on your CDI unit. Let me know if you find one…

                  Mr ShadiM Offline
                  Mr ShadiM Offline
                  Mr Shadi
                  wrote on last edited by
                  #41

                  @SpookDog i dont see one. here are some pics 6c8a5cb4-873d-456c-a360-ec6e7030eb31-image.png 7f33e7d3-cb1f-465d-bd87-3606c30dff18-image.png 76aeb926-e8c3-4684-8174-9f02e07c0ee5-image.png ![19f897dc-660c-4bb7-8758-aba0143aa7bd-image.png](/assets/uploads/files/1682163242666-19f897dc-660c-4bb7-8758-50f10cb4-1e93-4f31-8e89-9ec27a4c0055-image.png aba0143aa7bd-image.png) 376af406-420c-4914-94fd-da74734ab6cd-image.png

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                  • Mr ShadiM Mr Shadi

                    @SpookDog i dont see one. here are some pics 6c8a5cb4-873d-456c-a360-ec6e7030eb31-image.png 7f33e7d3-cb1f-465d-bd87-3606c30dff18-image.png 76aeb926-e8c3-4684-8174-9f02e07c0ee5-image.png ![19f897dc-660c-4bb7-8758-aba0143aa7bd-image.png](/assets/uploads/files/1682163242666-19f897dc-660c-4bb7-8758-50f10cb4-1e93-4f31-8e89-9ec27a4c0055-image.png aba0143aa7bd-image.png) 376af406-420c-4914-94fd-da74734ab6cd-image.png

                    S Offline
                    S Offline
                    SpookDog
                    wrote on last edited by
                    #42

                    @Mr-Shadi

                    It might be a different colour on account of the weird RN thing…

                    From what I’ve read people move the reed switch then cut & earth a black/green wire…

                    Mr ShadiM S 2 Replies Last reply
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                    • S SpookDog

                      @Mr-Shadi

                      It might be a different colour on account of the weird RN thing…

                      From what I’ve read people move the reed switch then cut & earth a black/green wire…

                      Mr ShadiM Offline
                      Mr ShadiM Offline
                      Mr Shadi
                      wrote on last edited by
                      #43

                      @SpookDog i think if i take the other bikes wiring diagram with black green and then my wiring diagram and then determine witch wire does what. like compare the wire colors for example its bike has red wire as power mine has orange. just a example not reality.

                      1 Reply Last reply
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                      • S SpookDog

                        @Mr-Shadi

                        It might be a different colour on account of the weird RN thing…

                        From what I’ve read people move the reed switch then cut & earth a black/green wire…

                        S Offline
                        S Offline
                        SpookDog
                        wrote on last edited by
                        #44

                        Hang on bud! Your bike is a Dt125RN you said? Did you mean a Dtr125 3rn? This would make more sense! 🙄

                        S 1 Reply Last reply
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                        • S SpookDog

                          Hang on bud! Your bike is a Dt125RN you said? Did you mean a Dtr125 3rn? This would make more sense! 🙄

                          S Offline
                          S Offline
                          SpookDog
                          wrote on last edited by SpookDog
                          #45

                          Just counted CDI wires on the 3rn diagram in my Haynes manual and it says 11 wires from the CDI. How many have you got?…
                          I’m just curious cause it doesn’t show the reed switch or any wiring to the speedo on the diagram, guess they wouldn’t show the restriction though! 🙂 …

                          Mr ShadiM 1 Reply Last reply
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                          • S SpookDog

                            Just counted CDI wires on the 3rn diagram in my Haynes manual and it says 11 wires from the CDI. How many have you got?…
                            I’m just curious cause it doesn’t show the reed switch or any wiring to the speedo on the diagram, guess they wouldn’t show the restriction though! 🙂 …

                            Mr ShadiM Offline
                            Mr ShadiM Offline
                            Mr Shadi
                            wrote on last edited by
                            #46

                            @SpookDog it has 18 wires. 3 cdi connectors with 6 wires each.

                            1 Reply Last reply
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                            • Mr ShadiM Mr Shadi

                              @SpookDog i also looked under the speedo and there is a white little box with blue and green red wire coming out of it. i tought it was a light but when i looked it had a little space between 2 metal thingies in it and it was covered with glass. Is that the reed switch?

                              markus.wM Offline
                              markus.wM Offline
                              markus.w
                              wrote on last edited by
                              #47

                              @Mr-Shadi this is a reed switch. If you look at it, it looks to be a broken fuse. When the speedo hits 61 mph it sends an electro magnetic signal and closes the switch which retards the ignition and closes the powervalve back up. Either move it far away from the clocks so the magnet can't reach it or cut it off and keep the wires apart.

                              Mr ShadiM 2 Replies Last reply
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                              • markus.wM markus.w

                                @Mr-Shadi this is a reed switch. If you look at it, it looks to be a broken fuse. When the speedo hits 61 mph it sends an electro magnetic signal and closes the switch which retards the ignition and closes the powervalve back up. Either move it far away from the clocks so the magnet can't reach it or cut it off and keep the wires apart.

                                Mr ShadiM Offline
                                Mr ShadiM Offline
                                Mr Shadi
                                wrote on last edited by
                                #48

                                @markus-w if i cut it off the bike wount rev over 6k and if i move it it randomly restricts it to 6k rpm. then i need to come to a stop and it revs over 6k.

                                1 Reply Last reply
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                                • markus.wM markus.w

                                  @Mr-Shadi this is a reed switch. If you look at it, it looks to be a broken fuse. When the speedo hits 61 mph it sends an electro magnetic signal and closes the switch which retards the ignition and closes the powervalve back up. Either move it far away from the clocks so the magnet can't reach it or cut it off and keep the wires apart.

                                  Mr ShadiM Offline
                                  Mr ShadiM Offline
                                  Mr Shadi
                                  wrote on last edited by
                                  #49

                                  @markus-w and my reed switch allows me to go only 80km/h thats 49.7097 mph

                                  S 1 Reply Last reply
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                                  • Mr ShadiM Mr Shadi

                                    @markus-w and my reed switch allows me to go only 80km/h thats 49.7097 mph

                                    S Offline
                                    S Offline
                                    SpookDog
                                    wrote on last edited by
                                    #50

                                    @Mr-Shadi

                                    We need to find out what wires need to be cut and earthed. On my tzr 4hw there are 2 wires that have been cut, joined and earthed by previous owners. A black with lavender-blue stripe and a grey…

                                    Mr ShadiM 1 Reply Last reply
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                                    • S SpookDog

                                      @Mr-Shadi

                                      We need to find out what wires need to be cut and earthed. On my tzr 4hw there are 2 wires that have been cut, joined and earthed by previous owners. A black with lavender-blue stripe and a grey…

                                      Mr ShadiM Offline
                                      Mr ShadiM Offline
                                      Mr Shadi
                                      wrote on last edited by
                                      #51

                                      @SpookDog that would be the thing if there was a good electrical scheme of my 4bl 1997 bike

                                      Mr ShadiM 1 Reply Last reply
                                      1
                                      • Mr ShadiM Mr Shadi

                                        @SpookDog that would be the thing if there was a good electrical scheme of my 4bl 1997 bike

                                        Mr ShadiM Offline
                                        Mr ShadiM Offline
                                        Mr Shadi
                                        wrote on last edited by
                                        #52

                                        @Mr-Shadi in one of the manuals there is this 07b89341-0873-4a04-9968-850213697628-image.png

                                        1 Reply Last reply
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                                        • S Offline
                                          S Offline
                                          SpookDog
                                          wrote on last edited by SpookDog
                                          #53

                                          I’ll look for a 4bl (I’ve never heard of a 4BL, you sure it’s not 4DL?) wiring diagram…

                                          It is bl just checked

                                          S Mr ShadiM 2 Replies Last reply
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