BOAT FEATURES AND OPTIONS
SECTION
9
© 2003-2018 Ken Cook Co.
9 - 2
l Bass
ENGINE LUBRICATION SYSTEM
Depending on engine type, the boat may feature one of several engine lubrication
systems. Many small-to-mid-range two-cycle outboards are lubricated by oil mixed
directly with the gasoline in the fuel tank, while other two-cycle outboards may be
equipped with an oil injection system. In each system, 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. Four-cycle outboards and sterndrive engines, like automotive,
use a sump system where the engine oil is contained in the engine. See the Engine
Operator’s Manual for engine oil recommendations and information.
ENGINE COOLING SYSTEM
Most outboard engines are cooled by
using raw water to transfer heat from the
engine and then returning the raw water
to the sea/lake. A raw water pickup and
screen on the lower drive unit allows
water into the engine. A pump then
circulates the water to cool the engine.
Be sure to periodically inspect the intake
screen and clear it of any debris which
could obstruct water flow into the
engine. A continuous discharge of water
from the cooling water check port while
the engine is running is a visual
indication that the engine’s cooling
system is operating properly.
To prevent
engine damage, DO NOT run it with the
lower drive unit raw water intake above
the waterline or out of the water.
KC-0192-B
COOLING
WATER
INDICATOR
WATER
INTAKE
WATER
LINE
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