Yamaha 90hp four-stroke outboards are reliable inshore performers. Fast and powerful, they sport 1.8-liter displacement and DOHC or SOHC designs with four valves per cylinder. This gives them exceptional volumetric efficiency and lighter weights. With 25-inch shaft options for the F90, this horsepower range offers prime power for mid-size craft, including anglers trolling large, rough water in 25-inch-transom multi-species boats. A powerful part of Yamaha’s lineup—and your boating experience.
The 1.8-liter I-4 F90 features greater displacement and a single-overhead-camshaft design with four valves per cylinder. This boosts power and volumetric efficiency, streamlines design, and makes the F90 a leader in torque and acceleration.
$410 Dealer Engine Prep – Our factory qualified technicians perform a full test run of your new outboard by unpackaging it and connecting it to rigging, fuel, battery, and diagnostic computer. We run the motor up to operating temperature and test every operation of the motor to ensure your new motor is working just as it should be. The manufacturer’s required inspection checklist is completed and submitted to the manufacturer to validate the warranty.