Yamaha F225F, Service Manual

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Propeller selection
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Propeller selection
The size and type of propeller that is used will
affect the performance of a boat and out-
board motor critically. Propellers greatly
affect boat speed, acceleration, engine life,
fuel economy, and even boating and steering
capabilities. An incorrect choice could
adversely affect performance and could also
damage the engine seriously.
Use the following information as a guide for
selecting a propeller that meets the operating
conditions of the boat and outboard motor.
Propeller size
The size of the propeller is indicated on the
propeller boss end, and on the side of the
propeller boss.
a
Propeller diameter (in inches)
b
Propeller pitch (in inches)
c
Propeller type (propeller mark)
The propeller sizes listed in the propeller list
indicate the following information:
a
Propeller diameter (in inches)
b
Propeller pitch (in inches)
c
Propeller type (propeller mark)
d
Number of propeller blades
Selection
When the engine speed is at full throttle oper-
ating range, the ideal propeller for the boat is
the one that provides maximum performance
in relation to boat speed and fuel consump-
tion.
a b c
a
b
c
Full throttle operating range:
5000–6000 r/min
d a b c
Rigging recommendation / Propeller selection