Battery Requirement; Propeller Selection - Yamaha VX250A Owner's Manual

EMU01551

BATTERY REQUIREMENT

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Do not use a battery that does not meet
the specified capacity. If a battery which
differs from the specification is used, the
electrical system may perform poorly or
be overloaded, causing electrical system
damage.
Choose a battery which meets the following
specifications.
Minimum cold crank performance
520 Amps at -17.8°C (0°F)
Minimum reserve capacity
80 Minutes at 26.7°C (80°F)
If any electrical accessories are used, use a
second battery to power them. Choose a
battery with the same capacity as the one
for the engine. If the engine's battery volt-
age drops to approximately 9 volts or below
during operation or while starting, the elec-
tric fuel pump for the Electronic Fuel
Injection system will not operate. The
engine can not be started if battery voltage
is too low.
EMU01395

PROPELLER SELECTION

The performance of your outboard motor
will be critically affected by your choice of
propeller, as an incorrect choice could
adversely affect performance and could
also seriously damage the motor. Engine
speed depends on the propeller size and
boat load. If engine speed is too high or too
low for good engine performance, this will
have an adverse effect on the engine.
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