Honda BF35A-BF45A Outboard Motors Shop Manual., Page 468Get this manual
PRECAUTION WHEN SELECTING PROPELLER The outboard motor must be installed vertically in relation to the bottom of the boatProtect the propeller from foreign objects, and check regularly for damages and deformation, and aquatic plants wrapped around the propeller hubKeep the bottom of the boat clean from shells, algae growth and dirt (they will cause significant drop in top speed)When doing propeller checks select calm day with little wave actionAvoid strong winds; the wind speed should be less thanms (0.0010.002 milesls)The boat should carry its average load (crew, load arrangement, ballast)P the check the conditions
TOP SPEED CANNOT BE REACHED AT FULL THROTTLE
In this case the propeller is not properly matchedLower the propeller pitch by one size (1inches), avoid power loss and potential outboard motor damageIf it is necessary to lower the engine speed, select propeller with pitch one size largerI the cases occur, acceleration will improve and the life expectancy of the outboard motor will increase by lowering the propeller pitch- at heavy loads (Crew, load, equipment, water skiing, etc