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Propeller selection
Propeller selection
The size and type of propeller that is used will affect the performance of a boat and outboard motor
critically. Propellers greatly affect boat speed, acceleration, engine life, fuel economy, and even boat-
ing 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 side of the propeller boss.
a. Propeller diameter (in inches)
b. Propeller pitch (in inches)
c. Propeller type (propeller mark)