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Hey fellers. I'm a FNG and this 1974 Merc 500 is my first outboard, and I'm learning quite a bit with it. Here is what I know regarding my tell tale:
1: Water pump has a brand new impeller and it works great. I also gather that there is no thermostat in this motor.
2: I know I'm pumping...
This is actually a much longer story, but I'll make it as short as possible. I ended up needing to replace the rectifier in my 74 merc 500 50hp. Put in a new set of plugs at the same time. I started it in the test tank at the house and the thing ran like a dream. Started with maybe two...
