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  1. R

    75 Merc 4.5 hp Water pump trouble

    I have a 1975, 4.5 hp mercury outboard that runs great but won't seem to pump any cooling water. I have changed the entire water pump assembly including impeller, have flushed all of the water line segments with a water hose from top to bottom and in reverse, removed the powerhead from the drive...
  2. R

    75' Mercury Outboard won't pee (tried everything)

    I have a 1975, 4.5 hp mercury outboard that runs great but won't pee little more than a drop. I have changed the entire water pump assembly including impeller (obviously), have flushed all of the water line segments with a water hose from top to bottom and in reverse, removed the powerhead from...
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