2.0 L sterndrive marine engine with octagonal oil cooler.
See attached model list.
What are the defects?
In engines which have an octagonal cooler, it is possible for components of the steering system of the engine to make contact with the oil cooler.
What are the hazards?
If the defect occurs, additional steering effort may be required, and if the engine is operating at full throttle, the vessel may become flooded with water.
What should consumers do?
Cease using their boat and take it to a Mercury dealer who will inspect the engine's oil cooler and, if found to be an octagonal oil cooler, will replace it with a round oil cooler.