Yamaha F100A - Manual (Page 21)

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EMU00031
BATTERY REQUIREMENT
c C
Do not use the battery that does not
meet the specified capacity. If different
battery from the specification is used, the
electric system may perform poorly or be
overloaded, causing electrical system
damage.
Choose battery which meets the following
specifications for Electric start model.
Minimum cold crank performance
380 Amps at -17.8°C (0°F)
Minimum reserve capacity
124 minutes at 26.7°C (80°F)
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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