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  1. 6

    Horsepower

    I recently bout a 1965 Merc 900 ,90hp Mercury outboard on a 1965 boat and it runs out ok ,but when you give it a full throttle;, it's like it doesn't have the power to push the boat over 10 to 15 mph on the lake.Anyone know why it doesn't go any faster than this.?
  2. 6

    Merc900 90hp Mercury outboard

    I bout a boat with a 1965 Mercury 90hp Merc900 engine on it. I replaced the impeller in the lower unit and put it all back together,the motor cranked right up after I hooked up the water ears and turned the water on.It runs good but when I took it to the lake the other day and gave it a full...
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