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    Help needed! Chronic overheating, Mercury 50HP, 2 cycle, 3 cylinder, 2002

    Motor will idle all day with temps in the high 120's on the thermostat housing. As soon as I put it in gear and advance throttle to 2000 PRM's, temp starts climbing until it sets off the alarm at 180 degrees. Here's what I have done so far: new thermostat, Mercury service guy rebuilt the...
  2. U

    Overheating without thermostat

    My 2002 3cyl. 50HP is overheating. I did a full water pump rebuild about 10 hours ago, albeit last year. I just replaced the thermostat with the prescribed 110 degree unit. Telltale stream is strong, seems to be better than last year. Today decided to remove the thermostat and try it. I ran...
  3. U

    Mercury 50 HP - 2 stroke: will not start, alarm sounds.

    2000 50 HP Mercury 2-stroke: Some advice would be helpful. I leave the motor tilted up when not in use. Tilted down and went to start but the alarm kept screeching. I cranked it anyway (probably not smart) and I did notice some water out the signal spray tube. I had replaced the water pump two...
  4. U

    ignition problems Merc 50 - 3 cyl.

    I have a 2002 50hp - ELO. Light use, summer only. Starting was intermittant this spring, once started, she ran beautifully. I replaced the ignition switch with no difference in symptoms. Today I replaced the solenoid and she has refused to crank at all. I can jump the solenoid and spin the...
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