Yamaha F90LB 90HP EFI 4-Stroke 20″ Shaft Outboard Motor

Yamaha 90HP F90LB EFI 4-Stroke 20in Shaft

The Yamaha 90HP F90LB is a versatile 1.8L four-cylinder outboard featuring a 20-inch shaft, widely regarded as a benchmark for power-to-weight performance in the 90HP class. This 1832cc SOHC engine is engineered for bay boats, aluminum fishing hulls, and pontoons, providing a punchy hole shot and the displacement necessary for efficient cruising with a full load. The mechanical soul of the F90LB centers on quiet, vibration-free operation, making it an ideal choice for recreational boaters who prioritize a refined experience without sacrificing the raw power needed for technical backwater navigation.

Achieving peak technical performance, the F90LB utilizes Multi-Point Precision EFI to coordinate optimal fuel delivery and instantaneous throttle response. The motor is treated with specialized marine-grade alloys and Yamaha’s proprietary Phaze Five™ anti-corrosion system to defend against oxidation in both coastal and freshwater environments. Routine maintenance is simplified by the conveniently located freshwater flush port and easy-access spin-on oil filter. This model includes a robust 35-amp alternator, ensuring a stable energy supply for multiple fish finders, navigational arrays, and shipboard accessory loads.

Key Features of Yamaha F90LB

• 1832cc 4-Cylinder SOHC 16-Valve.
• 90 Horsepower Prop Shaft Rating.
• 20-Inch Shaft 353 lbs Weight.
• Multi-Point Precision Fuel Injection (EFI).
• Mechanical Remote Control Compatibility.
• 35 Amp Total Output Alternator.
• 2.15:1 Ratio Standard Gearcase.