DT125R FORUM

    • Register
    • Login
    • Search
    • Recent
    • Tags
    • Popular
    • Users
    • Groups

    Power Valve set up

    Technical Zone
    4
    4
    821
    Loading More Posts
    • 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.
    • A
      AnthonyPearson last edited by

      When setting up the Servo/Pulleys on my DT, i understand it is necessary to ensure that the powevalve is flush with the exhaust port.
      I have taken off the exhaust have ensured that this is the case, take the slack off the cables, and turn the ignition on so it can do its cleaning cycle.

      When i do this the servo makes the noise it would if it was trying to move but it gets stuck.

      When it does the Cleaning cycle, the powervalve turns clockwise and and pins shut, is this normal behaviour, as when i hit 7,000 where the PV should kick in and throw the front wheel up there is just a small pull, nothing compared to what im used to.

      Is there something that i am doing wrong?

      Blue Yamaha DT 125R 2003

      1 Reply Last reply Reply Quote 0
      • Calum
        Calum last edited by

        Well I wouldn't say throw the front wheel up, it's not a crosser.

        There should be no power drop off however.

        Always Originate, Never Pirate!

        1 Reply Last reply Reply Quote 0
        • Zrako
          Zrako last edited by

          Overtightened pv adjusters maybe , is your cleaning cycle nice and turns free?

          1979 Jawa Mustang 50
          2003 Gilera DNA 125 R.I.P
          2015 Keeway TX 125 SM
          2006 Yamaha DT 125 X

          declan 1 Reply Last reply Reply Quote 0
          • declan
            declan @Zrako last edited by

            @Zrako when I rebuilt my bike my servo would get stuck when turning on the ignition how ever I kept turning the key and it sorted its self out no problem

            1 Reply Last reply Reply Quote 0
            • First post
              Last post