Best 4 stroke?

[Alchase]

I wonder if a yamaha 10 horse would push a 14 ft aluminum with 2 people,a dog and gear well?

The Yamaha 9.9 and the 15 HP are he same motor, but the 9.9 is detuned. Some years they changed the jets, some years they put a different restrictor or plate on. If you could find a 9.9 used, and change out the plate or jets, you would have a 15 HP.
The 15 HP would have no problem getting the 14 ft on a plane.

[Bofire]

Al, I do not know about the 9.9 but per the Yamaha spec book both the four cycle 15 hp and 20 hp are; same weight per model,118 lbs short; 123 lbs long, same displacement 362 cc, same bore and stroke. On the 2 stroke 9.9/15 seem to be the same.
Carl

[Alchase]

Al, I do not know about the 9.9 but per the Yamaha spec book both the four cycle 15 hp and 20 hp are; same weight per model,118 lbs short; 123 lbs long, same displacement 362 cc, same bore and stroke. On the 2 stroke 9.9/15 seem to be the same.
Carl

Oops I believe you are correct,
I can check my 15 HP 4 stroke manual when I get home.