Yamaha’s all-new 90hp Midrange four strokes 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.
KEY FEATURES
Charging Power: The F90 features a three-phase alternator that produces up to 35 amps of power. For the 90hp, that’s 40 percent more output than previous designs. That’s plenty of electrical power for battery charging and accessories, with more to spare.
Variable Trolling: The F90 features Yamaha’s Variable Trolling RPM Switch (VTS®). This allows for precision adjustment of trolling speeds in 50-RPM increments, from 550 to 1000 RPM for the 90hp. It even allows for sub-idle trolling. This is a major plus for anglers.
Extended Engine Life: A Freshwater Flush Device allows you to flush the engine without starting it, for maximum convenience, durability and engine life.
MOTOR SPECIFICATIONS
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- Engine Type: Yamaha F90LB Four Stroke
- Horsepower: 90hp
- Cylinders: 4 cyl
- Shaft Length: 20″ Long
- Steering: Remote Mechanical
- Starter: Electric
- Weight: 353 lbs
- Alternator Output: 35 amp
- Degree of Tilt: 70°
- Degree of Trim: -4° through +66°
- Full Throttle Range: 5000 – 6000 rpm
- Displacement: 1.8L
- Fuel Induction System: Electronic Fuel Injection (EFI)
- Warranty: Yamaha 3-Year Warranty
STANDARD FEATURES
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- Power Trim & Tilt
- Steering Link Arm
- Owner’s Manual
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