Owner`s manual

Ship Systems
Sport Boat
3-3
system. Some stern drives are equipped with an exhaust diverter valve
which, when activated, routes engine exhaust to through-transom exhaust
pipes or down through the propeller hub. Through-transom exhaust is only
used when well offshore. Never change or modify the standard
manufactured exhaust system.
LUBRICATION SYSTEM
Depending on engine type, your boat may be equipped with one of several
engine lubrication systems. Many small to mid-range outboards are
lubricated by oil mixed directly with the gasoline in the fuel tank, while
other outboards may be equipped with an oil injection system. In both
systems, the oil is consumed as the engine runs. Oil injection systems
include a separate reservoir for oil containment and an oil pump or
combination fuel/oil pump that supplies oil to the fuel system for engine
lubrication.
Stern drive engines, like automobile engines, use a continuous loop
lubrication system that must be periodically serviced. Refer to the engine
operator’s manual for oil recommendations.
COOLING SYSTEM
The majority of marine engines are cooled by the continuous intake of raw
lake water and circulating it around components. Inboards are equipped
with seacocks and strainers at the raw water intake. Some marine engines
used in saltwater may be equipped with a self-contained freshwater
cooling system that pumps engine coolant through a heat exchanger to
reduce engine temperature. Raw water is circulated through the other side
of the heat exchanger to absorb engine heat from the coolant.
Any water intake or outlet below the water line
is equipped with a seacock. Seacocks, located
at the through-hull fitting, should be kept closed
during long periods of inactivity and opened
only when needed.
 WARNING
Keep seacocks closed during periods of inactivity. A
downstream hose failure could flood the boat if the seacock is
left open.
KC-2165.1
KCC_SportBoat_Book.book Page 3 Tuesday, December 5, 2006 7:19 AM