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23
INSTALLATION
Installation Height
Adverse effect to the engine can
occur if the installation position
of the outboard motor is too low.
Trim/tilt down the outboard
motor with the boat fully loaded
and stop the engine. Check that
the idle port is 150 mm (5.9 in)
or more above the water level.
The water level must be at least
100 mm (4 in) above the
anticavitation plate, otherwise
the water pump may not receive
sufficient cooling water, and the
engine will overheat.
ANTICAVITATION PLATE
B
B
O
O
A
A
T
T
T
T
R
R
A
A
N
N
S
S
O
O
M
M
H
H
E
E
I
I
G
G
H
H
T
T
WATER LEVEL
FULLY TRIM/
TILT DOWN
150 mm
(5.9 in) or more
IDLE PORT
0
50 mm
(0
2 in)
If the outboard motor is installed too
low, the boat will squat and be hard
to plane, and the motor will spray
water that may enter the boat. It will
tend to porpoise, and high-speed
stability will be reduced.
If the outboard motor is installed too
high, that will cause propeller
ventilation.
The anticavitation plate of the
outboard motor should be
0
50 mm (0
2 in) below the
bottom of the boat.
The correct dimensions differ
according to the type of the boats
and the configuration of the bottom
of the boats. Follow the
manufacture’s recommended
installation height.
Содержание BF4.5B
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