You take it to have a dyno test done.
6 Horse power.
25-30 horse power.
140 Horse Power
1991 model, 15 horsepower
Bad spark plugs or wires, worn piston rings, out of time, or carburetor needs adjusting.
Any age, as long as you have a license. Once you are 12 you can drive a boat with of any horse power.
You can put a zip tie on your throttle spring. Voids the warranty. K&N air filter?
Unfortunately to find out the year of a Mercury boat motor one needs not only the serial number, but also the horse power rating. This allows it to be narrowed down to a specific year.
well if it is a boat yes.
dose this engine take oil or gas mix
If the motor is over 15 horsepower and over 3.7 metres you would need a boat licence.
Usually will list max HP motor for that boat.