Installation; Installation Position; Installation Height - Honda Outboard Motors BF25A Owner's Manual

4. INSTALLATION
Installation
It is your responsibility to choose a
boat suitable for the motor.
DO NOT OVERPOWER THE BOAT
Do not install an outboard motor that
exceeds the recommended maximum
horsepower for the boat. Refer to the
boat certification plate for the maxi-
mum recommended horsepower for the
boat. For most boat applications, the
motor should have a horsepower which
provides 80% of the maximum recom-
mended horsepower for the boat. If the
certification plate information is not
available, contact the boat dealer.
The BF25A/30A must be installed on
transoms which have the following
minimum or maximu thickness.
Boat Transom Thickness
Minimum = 1.38 in (35 mm)
Maximum = 2.24 in (57 mm)
STERN CENTER LINE
Installation position
Install on the stern center line.
Installation height
For proper propeller depth and engine
cooling, the boat and outboard motor
transom height must match.
Three outboard motor transom heights
are available. Match your boats tran-
som height to the outboard motor
transom height shown below.
Outboard Motor
Type
Transom Height
Short 16.97 in (43 I mm)
Long 21.73 in (552 mm)
Extra Long 24.88.in (632 mm)
@ MOTOH TRANSOM HEIGHT
@ BOAT TRANSOM HEIGHT
@I O-2 in (O-50 mm)
@ ANTI-VENTLATION PLATE
The anti-ventilation plate should be
O-2 inches below the bottom of the
boat. With the boat in the water, loaded
and motor off, the anti-ventilation plate
should be about 4 inches below the
surface of the water.
-1 Running the outboard
motor without sufficient cooling
water will damage the water pump
and overheat the engine.
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