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  1. #1

    Talking 2003 Ultra 150 speedometer off

    Recently purchased a 2003 Ultra 150, which when I took it for a test drive was showing 63. After buying, it now only reads at max 53. When riding next to my other PWC (Yamaha GP1300R) it is about 10-12 mph off. Any suggestions? Thanks in advance!


  2. #2
    steve45's Avatar
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    Welcome aboard, brtl1000s!

    Did you look at the spark plugs?

  3. #3
    Thanks!


    Sorry, for the confusion, the ski is actually doing 62-63 because it is keeping up with my other one. The speedometer is off by 10-12 mph.


    But, Yes the spark plugs were replaced for a different reason after the problem with the speedometer.

  4. #4
    wakejunkie's Avatar
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    If I am correct I believe the speed sensor is magnetic based design. So that the paddle wheel sends a signal to the base as each tab on the wheel creates a magnetic field when passing by the base. With that said I think it could be a bad sensor causing it to not pick up all the tabs at high speed. Just a thought....

  5. #5
    steve45's Avatar
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    Sorry for the mix-up. The paddlewheel pickup has slotted mounting holes so you can align it flush with the bottom of the hull. Try moving it slightly.

  6. #6
    Thanks for the comments "wakejunkie" and steve45. I will try adjusting the wheel as you suggested Steve and let you know.

  7. #7
    wakejunkie's Avatar
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    For the input mine reads 86mph on the speedo when running 70mph on GPS, so I never pay any attention to actual speed

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