You will probably have to drop the lower end of the outboard. Its sound hard but really it is usually quite simple. The pump is nothing more than rubber impeller on a brass collet.
A Mercury outboard water pump is a engine cooling system. A outboard water pump is what blows steam through to get the car cool,
The 15 horsepower Mercury outboard motor does not have a water pump. The outboard motor is air cooled and does not have a need for circulating water.
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Mechanical. It is located at the top of the gearcase.
Change the water pump impeller, they get old and need replacing every 5 years or so depending on wear.
The water pump impeller on a 7.5 hp Mercury outboard, is located on top of the gearcase, and is driven by the driveshaft.
420lbs
Every two years to be safe
Sprinkle liberally a vile of gypsy tears
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