Installation Requirements; Boat Horsepower Rating; Mounting The Outboard Motor; Battery Requirements (F4B, F5A, F6C) - Yamaha F2.5A Owner's Manual

Noise and vibration level:
Operator sound pressure level (ICOMIA
39/94):
F2.5AMH 80.9 dB(A)
F4BMH 77.5 dB(A)
F5AMH 77.5 dB(A)
F6CMH 77.5 dB(A)
Vibration on tiller handle (ICOMIA 38/94):
F2.5AMH 3.8 m/s²
F4BMH 5.5 m/s²
F5AMH 5.5 m/s²
F6CMH 5.5 m/s²
EMU33555

Installation requirements

EMU33565

Boat horsepower rating

EWM01561
WARNING
Overpowering a boat can cause severe in-
stability.
Before installing the outboard motor(s), con-
firm that the total horsepower of your out-
board motor(s) does not exceed the boats
maximum horsepower rating. See the boat's
capacity plate or contact the manufacturer.
EMU43001

Mounting the outboard motor

F2.5A
EWM01571
WARNING
 Improper mounting of the outboard mo-
tor could result in hazardous conditions
such as poor handling, loss of control,
or fire hazards.
 Because the motor is very heavy, spe-
cial equipment and training is required
to mount it safely.
Your dealer or other person experienced in
proper rigging should mount the motor using
correct equipment and complete rigging in-
structions. For further information, see page
30.
Specifications and requirements
F4B, F5A, F6C
EWM02431
Improper mounting of the outboard motor
could result in hazardous conditions, such
as poor handling, loss of control, or fire
hazards. If you are not able to mount the
outboard
Yamaha dealer.
To lift and mount the outboard motor, two
people are necessary. For further informa-
tion, see page 30.
EMU40052
When installing a battery, the lighting coil kit
must be installed. For installation of the bat-
tery and lighting coil kit, consult a Yamaha
dealer.
EMU34196
Next to selecting an outboard motor, select-
ing the right propeller is one of the most im-
portant purchasing decisions a boater can
make. The type, size, and design of your pro-
peller have a direct impact on acceleration,
top speed, fuel economy, and even engine
life. Yamaha designs and manufactures pro-
pellers for every Yamaha outboard motor and
every application.
Your outboard motor came with a Yamaha
propeller selected to perform well over a
range of applications, but there may be uses
where a different propeller would be more
appropriate.
Your Yamaha dealer can help you select the
right propeller for your boating needs. Select
a propeller that will allow the engine to reach
the middle or upper half of the operating
range at full throttle with the maximum boat-
load. Generally, select a larger pitch propeller
WARNING
motor properly,
Battery requirements (F4B,
F5A, F6C)

Propeller selection

consult a
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