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  1. K

    1980 System A tilt trim. Will trim down, but not up

    The motor is a 1979 90 HP Mercury, the tilt/trim is the system "A" type. It was working good during our last ski trp until I noticed that the motor wouldn't come up, I could hear the motor working in both directions and checked the fluid everything seemed to be good. Today I finally went out to...
  2. K

    1979 Mercury 90HP Ignition switch wiring

    I received the switch today and I will put it in this weekend, but there is only one problem, I am not positive which wires go exactly where on the new ignition switch. The new switch has 5 terminals and they are labeled as Battery, Solenoid, Magneto, ACC and Ground. The ground is obvious and I...
  3. K

    1979 90 HP Mercury outboard Flooding issues

    My Mercury outboard was having some issues last year with accleration and hesitation during throttle (it would die/bog down at half throttle). I took it to a reputable Marine shop and the guys there were very helpful. They told me that one of the switch box's were bad (power head) and that I...
  4. K

    1976 Mercury 90HP stalls during accelration

    I am fairly mechanicly inclined, yet I have no experience with marine engines. This is my first boat and I am experiencing some minor problems. The engine starts and runs fine when it is cold or when there is no load on it, when I get it out in the water it stalls/bogs down when it reaches the...
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