2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 32Get this manual
GEN INFO
General information
Propeller selection
The performance of boat and outboard motor will be critically affected by the size and type of propeller you choosePropellers greatly affect boat speed, acceleration, engine life, fuel economy, and even boating and steering capabilitiesAn incorrect choice could adversely affect performance and could also seriously damage the engineUse the following information as guide for selecting propeller that meets the operating conditions of the boat and the outboard motor
a Propeller diameter (in inches) Propeller pitch (in inches) Propeller type (propeller mark)
Selection
When the engine speed is at the full throttle operating range (5,0006,000 rmin), the ideal propeller for the boat is one that provides maximum performance in relation to boat speed and fuel consumptionRegular rotation model Propeller size (in) 13 34 1713 34 1913 34 2114 12 1514 12 1914 12 2114 78 21Stainless Material