05-21-2019 07:56 - edited 05-21-2019 08:01
That means the 17" Rebel would be close to perfect for all around use, tubing, and fuel economy. Glad to hear that the engine mounting height is correct.
An 18" RX4 may result in about a 5600-5700 rpm range which is optimal and a 16" might be close to 5800-6000 rpm. Every boat performs differently even with the same prop.
"There is never just one thing wrong with a boat";
-- Travis McGee, main character in a book series by John D. McDonald
The factory recommends that a properly trained technician service your Johnson or Evinrude outboard motor. Should you elect to perform repairs yourself, use caution, common sense, and observe safety procedures in the vicinity of flammable liquids, around moving parts, near high-temperature components, and working with electrical or ignition systems.
The information offered here is only general in nature and should not be construed as complete factory approved procedures, techniques, or specifications. Always use the proper service manual for your motor, up-to-date service literature, the correct tools, and have an understanding of how to proceed with troubleshooting and repair methods. If you are unsure or uncomfortable with a procedure, a situation, or a technique, enlist the services of a factory trained technician.