Mid-80's 75 hp 'Zukes
They're good motors. Early 80's motors had some problems with excessive corrosion when used in salt water without remediation. It's worth the cost of the gasket to pull the water jacket cover and look for electrolysis and corrosion in a motor that's spent it's life in salt water. If it's a salt motor, check the thermostat, too. Put a new impeller in every year if you use it in salt, and check/clean the thermostat.
Fresh water motors should be fine.
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Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes.
Fr. Frank says:
Jesus liked fishing, too. He even walked on water to get to the boat!
Currently without a SeaCraft 
(2) Pompano 12' fishing kayaks
'73 Cobia 18' prototype "Casting Skiff", 70hp Mercury
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