Suzuki 2002-2005 DF4/DF5/DF6 4-Stroke Outboards Service Manual, Page 10Get this manual
GENERAL INFORMATION
PROPELLERS
An outboard motor is designed to develop its rated power within specified engine speed rangeThe maximum rated power delivered by the DF45 models are shown belowRecommended full throttle speed range DF4 DF5 4000 5000 rmin 4500 5500 rmin
If the standard propeller fails to meet the above requirement, use another pitch propeller to hold the engine speed within the range specified abovePropeller selection chart