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Thread: pwr valves

  1. #1

    pwr valves

    i have a 02 1200r and the power valves dont cycle. i no longer hear them at all....i get about 6200 at wot...any ideas??? tnx


  2. #2
    Moderated
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    at a guess it sounds like your servo motor is not working....

  3. #3

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    Quote Originally Posted by yamaha101 View Post
    i have a 02 1200r and the power valves dont cycle. i no longer hear them at all....i get about 6200 at wot...any ideas??? tnx
    check your fuses on the cdi box, then check the connector by the servo motor, these usually give problems first, if nothing, could be motor or the cdi box itself

  4. #4
    Moderator RX951's Avatar
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    Servo Test


  5. #5
    WATER WOODY's Avatar
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    Good info Billy. Not bad for a 4 stroke guy..

    Yamaha101....test the pv motor as RX951 described. You can find used pv motors on here...

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