Where did you see something like that? I'm pretty sure that would be illegal. I don't know of any 16' boat that would be rated for a 300HP motor.
02-11-2017 04:15 - edited 02-11-2017 04:22
In the United States we have Federal regulations concerning powerboats, both commercial and recreational.
The US Coast Guard enforces these plus we have organizations that have industry accepted standards that many boat builders go by. One is that for boats under 20' long, there has to be tests conducted and placards installed telling the maximum weight allowed and the maximum horsepower allowed.
Racing boats are exempt but all other recreational craft are required to abide by the regulations.
In bass and other fishing tournaments, the boats have to be legal and most 250-300 HP engines are on 20 to 22' boats.
You can peruse many of the regulations online.
Code of Federal Regulations
"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.