Yamaha 115HP - F115LB Outboard Motor

Yamaha's F115LB puts 115 hp behind a 20-inch shaft, controlled through remote mechanical throttle and shift with electric start, at a listed weight of 377 lbs. The inline-four underneath, 1.8 liters and four strokes, is built lighter than many rivals at this horsepower, which Yamaha ties to quicker acceleration off the line and an easier time getting a loaded boat up onto plane.

Fuel flexibility

This engine is built to run on straight gasoline, E85 ethanol, or any blend of the two, backed by a 6-gallon fuel tank, so a boater is not limited to a single fuel type at the dock. EFI meters fuel consistently across whichever blend ends up in the tank rather than needing manual adjustment.

What comes with the motor

Power trim and tilt ship as standard, along with a steering link arm and the owner's manual; a propeller is a separate purchase, left out so buyers can match one to their own boat and use, since prop choice depends heavily on hull shape and typical load.

Matching shaft to transom

Twenty inches puts this on the shorter end of Yamaha's F115 shaft options, so measure your transom before ordering rather than assuming it will fit; shaft length is one detail that cannot be adjusted once the engine is mounted.

Specs at a glance: 1832cc of displacement, a 5300-6300 rpm full-throttle range, and a 3-year warranty.