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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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  • 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
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    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

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          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 🙂 …

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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 🙂 …

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            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

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                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.

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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…

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                    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! 🙄

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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! 🙄

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                      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.

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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.

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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

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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

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                                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
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                                  • 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

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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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                                      • S SpookDog

                                        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

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                                        SpookDog
                                        wrote on last edited by SpookDog
                                        #54

                                        What colour is the wire going to the reed switch? Also what colour wire returns from it, if different?…

                                        is it red/blue?! with a white/black wire returning?!

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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

                                          markus.wM Offline
                                          markus.wM Offline
                                          markus.w
                                          wrote on last edited by
                                          #55

                                          @Mr-Shadi you have the 4BL model, that's the later one with the reed switch but I guess you must have the restricted 3RM-10 CDI?

                                          Mr ShadiM 1 Reply Last reply
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