Crevalle Boats 24 Bay, Owner'S Manual

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Propulsion System
nance, please refer to the engine owner’s manual.
When leaving the boat in the water, tilt the motor
as high as possible. This will decrease the risk of
marine growth around the cooling inlets, propel-
ler and exhaust ports and damage from galvanic
corrosion.
CAUTION
DO NOT PAINT THE OUTBOARD MOTOR WITH ANTIFOULING
PAINTS DESIGNED FOR BOAT HULLS. MANY OF THESE PAINTS
CAN CAUSE SEVERE DAMAGE TO THE ENGINE. CONTACT
YOUR CREVALLE DEALER OR ENGINE MANUFACTURER FOR
INFORMATION ON THE PROPER PAINTING PROCEDURES.
3.3 Engine Lubrication
2-Cycle Engine Lubrication
2-cycle outboard motors are lubricated by a vari-
able ratio oil injection system. The oil tank is
mounted in the bilge near the transom. It is filled
through a fill fitting in the stern labeled “OIL.” The
oil fill is opened by turning it counter clockwise.
After filling the tank, tighten the fill by turning it
clockwise until it is snug.
Notice:
Do not over tighten the oil tank fill cap. If the
cap is over tightened, the O-ring seal could
be damaged allowing water to contaminate
the oil system.
CAUTION
SOME ENGINE MANUFACTURERS USE OIL TANKS THAT ARE
UNDER PRESSURE WHEN THE ENGINES ARE OPERATING.
IF THE ENGINE LUBRICATION SYSTEM FOR YOUR ENGINES
IS PRESSURIZED, YOU MUST WAIT 5 MINUTES AFTER SHUT
DOWN BEFORE OPENING THE OIL FILL CAP. YOU SHOULD
REFER TO THE ENGINE OWNER’S MANUAL FOR SPECIFIC
INFORMATION ON THE OIL SUPPLY SYSTEM AND REFILLING
INSTRUCTIONS FOR YOUR ENGINE.
The vent for the oil tank is located in the oil fill
deck fitting, just below the deck. Therefore, the
oil tank fills and vents through the fill hose. Be
careful not to fill the oil tank too quickly. Too much
oil in the fill hose will prevent air in the tank from
escaping and cause oil to burp out of the fill.
Always monitor the oil level before each cruise
by checking the gauge or indicator lights in the
helm (not available on all engine installations) or
visually checking the oil level using the reference
marks on the tank.
When additional oil is needed, use only the type
of oil specified by the engine manufacturer. Refer
to the engine owner’s manual for oil specifications
and additional information on the oil injection
system.
4-Cycle Engine Lubrication
4-cycle outboard engines have an oil sump in the
crankcase that must be kept full of the type and
grade of oil recommended by the engine manufac-
turer. It is normal for 4-cycle engines to consume
a small amount of oil. Therefore, the oil must be
checked before each use and changed at regular
intervals as instructed by the engine owner’s
manual. As with 2-cycle engines, use only the
type of oil specified by the engine manufacturer.
3.4 Engine Cooling System
Outboard engines are raw water (seawater)
cooled. Water is pumped through the water
inlets, circulated through the engine block and
relinquished with the exhaust gases through the
propeller hub. The water pump uses a small
impeller made of synthetic rubber. The impeller
and water pump cannot run dry for more than a
few seconds. In most outboard motors, some
cooling water is diverted through ports below the
engine cowling. This allows the operator to visu-
ally check the operation of the cooling system.
When the engine is started, always check for a
steady stream of water coming out of those ports.
Notice:
If the boat is used in salt or badly polluted
water, the engines should be flushed after
each use. Refer to the engine owner’s man -
ual for the proper engine flushing procedure.
CAUTION
NEVER RUN AN OUTBOARD MOTOR WITHOUT WATER
FLOWING TO THE WATER PUMP. SERIOUS DAMAGE TO THE
WATER IMPELLER OR ENGINE COULD RESULT.