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    Yamaha 9.9 replacing w pump seal

    Trying to change the seal under the water pump on my 198x Yamaha 9.9 2stroke.<br />Removed the four bolts on the water pump housing and the upper part of the house (surrounding the ipmeller. Then I got huge problems removing the lower part of the water pump housing that holds the seal. I can...
  2. V

    Water in booth clinders, Yamaha 9.9 2-stroke 1984

    Hi,<br /><br />My Yamaha 9.9 2-stroke 1984 started to sputter at low rews and got a bit less max power. Found booth plugs to be soaked in water...<br /><br />Any ideas on where to start looking on this particular engine to find where the water is entering the cylinders?
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