Description
Explore the 2025 Yamaha F90LB 20″ Shaft Outboard Motor at All Pro Powersports. The Yamaha F90LB is Yamaha’s 90 HP midrange four-stroke. It suits pontoons, aluminum fishing boats and small center consoles that call for a 20″ shaft. Specifications below are taken from the manufacturer’s published data for this model.
Specifications
- SKU: APP-OB-YAMAHA-F90LB
- Year: 2025
- Condition: New
- Make: Yamaha
- Model: F90LB
- Type: 90 HP 4-Stroke Outboard Motor
- Horsepower: 90 HP @ 5,500 RPM
- Engine type: inline 4-cylinder, 4-stroke, SOHC with 4 valves per cylinder
- Displacement: 1.8L
- Bore x stroke: 81 x 88.9 mm
- Compression ratio: 10.0:1
- Full-throttle RPM range: 5,000–6,000
- Fuel induction: EFI
- Gear ratio: 2.15:1
- Alternator output: 35 amp
- Starting: electric
- Steering angle: 35° from center
- Shaft length: 20″
- Weight: 353 lb (20″), per Yamaha
- Recommended fuel: 87 octane
Features
- 1.8L displacement gives the F90 strong torque and acceleration for its class.
- Single-overhead-cam design with four valves per cylinder.
- Yamaha lists it as 13 lb lighter than the previous-generation F90.
- 35-amp alternator supports electronics and accessory batteries.
- Runs on 87-octane regular fuel.
- A common choice for pontoons, aluminum fishing boats and small center consoles.
Condition
New unit.
Contact All Pro Powersports at (256) 489-5477 for more information about this Yamaha F90LB.



























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