Propeller Selection - Yamaha F6A Manuel D'utilisation

EMU00035

PROPELLER SELECTION

The performance of your outboard motor will
be critically affected by your choice of pro-
peller, for an incorrect one could adversely
affect performance and could seriously
damage the motor. The engine speed
depends on the propeller size and the boat
load. If the engine speed is too high or too
low for good engine performance, this will
have an adverse effect on the engine.
Yamaha outboard motors are fitted with pro-
pellers chosen to perform well over a range
of applications, but there may be uses
where a propeller with a different pitch would
be better. For a greater operating load, a
smaller-pitch propeller is more suitable as it
enables the correct engine speed to be
maintained. Conversely, a larger-pitch pro-
peller is more suitable for a smaller operat-
ing load.
Yamaha dealers stock a range of propellers,
and can advise you and install a propeller on
your outboard that is best suited to your
application.
NOTE:
@
Select a propeller which will allow the
engine to reach the middle or upper half of
the operating range at full throttle with the
maximum boat load. If operating under con-
ditions such as light boat loads that allow the
engine rpm to rise above the maximum rec-
ommended range, reduce the throttle setting
to maintain the engine in the proper operat-
ing range.
@
For recommended full throttle operating
range, refer to "SPECIFICATIONS", Page
4-1.
1-13
GB