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2001 yamaha 40 xwtl over heating alarm

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  • 2001 yamaha 40 xwtl over heating alarm

    I have 2001 yamaha cv 40 (xwtl).
    The over heating alarm has been going off when i go over 3 quarter throttle. I can sit on 3 quarter and it not go off but the moment i go over it goes off within 20 seconds.
    i have changed thermostat and sensor.
    Water is pumping fine and motor isn't over heating i am replacing water pump just to be sure bit i am running out of ideas.
    Anyone else got any ideas?

  • #2
    more than likely, debris under the cyl head.

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