Digital Electronic Control Requirements; Battery Requirements; Battery Specifications; Mounting Battery - Yamaha F250B Owner's Manual

Specifications and requirements
EMU34952
Digital electronic control re-
quirements
The digital electronic control be equipped with
a start-in-gear protection device(s). This de-
vice prevents the engine from starting unless
it is in neutral.
EWM01580
WARNING
If the engine starts in gear, the boat can
G
move suddenly and unexpectedly, pos-
sibly causing a collision or throwing
passengers overboard.
If the engine ever starts in gear, the
G
start-in-gear protection device is not
working correctly and you should dis-
continue using the outboard. Contact
your Yamaha dealer.
This digital electronic control unit is only avail-
able for the outboard motor which you have
purchased.
Prior to use of the digital electronic control
unit, set it in order to operate your outboard
motor only. Otherwise, it will not be possible to
operate the outboard motor.
Perform setting of the outboard motor and the
digital electronic control unit in the following
cases.
If a used outboard motor is installed
G
If the digital electronic control unit is re-
G
placed
If the ECM (Electronic control module) of
G
the used outboard motor is replaced
If the ECM (Electronic control module) of
G
the digital electronic control unit is replaced
Consult your Yamaha dealer for setting.
12
EMU25694

Battery requirements

EMU25721

Battery specifications

Minimum cold cranking amps (CCA/EN):
711.0 A
Minimum rated capacity (20HR/IEC):
100.0 Ah
The engine cannot be started if battery volt-
age is too low.
EMU36290

Mounting battery

Mount the battery holder securely in a dry,
well-ventilated, vibration-free location in the
boat. WARNING! Do not put flammable
items, or loose heavy or metal objects in
the same compartment as the battery.
Fire, explosion or sparks could result.
[EWM01820]
EMU36300

Multiple batteries

To connect multiple batteries, such as for mul-
tiple engine configurations or for an accessory
battery, consult your Yamaha dealer about
battery selection and correct wiring.
EMU34192

Propeller selection

Next to selecting an outboard, choosing the
right propeller is one of the most important
purchasing decisions a boater can make. The
type, size, and design of your propeller have
a direct impact on acceleration, top speed,
fuel economy, and even engine life. Yamaha
designs and manufactures propellers for ev-
ery Yamaha outboard motor and every appli-
cation.
Your outboard motor came with a Yamaha
propeller chosen to perform well over a range
of applications, but there may be uses where
a different propeller would be more appropri-
ate.