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  1. 9

    Yamaha 225 surging proplem

    I have a yamaha 1989 225 excel with micro computer ing. system. lately i've noticed a problem when i pull back the throttle to reduce crusing speed from 4000 rpm to 3000 rpm. the rpm will continue to slowley drop to about 2300 rpm on its own and stay there. When i just touch the throttle to...
  2. 9

    Yamaha compression test ?

    Would this be the right way to do a compression test on 1989 Yamaha 225 excel with YMIS computer ing. and three carberators. Run engine until warm, remove spark plugs, throttle wide open, manual says to ground all spark plug wires to engine but can i just remove kill switch tether to disable...
  3. 9

    yamaha 1989 225 excel (oil from main tank draining back to remote tank .

    I just installed a used 1989 yamaha 225 excel motor on my boat. I've noticed that about half of the oil in the main tank on engine drains back to the remote tank when the engine is in the tilt position. The tank refills when i put engine down and turn on key but this seems strange. Is this...
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