Search results

  1. I

    1971 Mercury 50Hp 500 Trolling and pumping Bulb

    I have a 1971 Mercury 500 50hp I have been working on for 2 months. I cant get this to keep trolling speed. It runs great atanything above trolling speed. But at trolling speed I cant go more than 60 yards without pumping bulb up. I have put kits in both carbs with floats. I have put new fuel...
  2. I

    1971 50hp 500 power problem Looses power.

    Hello to all the Members. I have this problem with a 1971 Mercury 500 50 hp. I bought boat went out and it run at top speed "great" for awhile, it seems like after I have stopped 2 or 3 times. Then next time I try and go its only half power. I thought maybe water was getting to lower cylinders...
Top