2019 Yamaha 90 HP F90LB Outboard Motor


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Explore the 2019 Yamaha 90 HP F90LB Outboard Motor: Precision, Power, and Performance

As an outboard specialist with a deep understanding of marine engineering, I’m delighted to introduce the 2019 Yamaha 90 HP F90LB. This outboard motor is more than just a piece of machinery; it’s your gateway to navigating the water with precision, power, and exceptional performance.

Engineering Excellence in Every Detail

The F90LB boasts a powerful inline 4-cylinder engine with a displacement of 1.8L. Its bore x stroke dimensions of 81 x 88.9mm (3.19 x 3.5 in) are finely tuned for optimal performance. With a prop shaft horsepower of 90hp at 5500 rpm and a full throttle RPM range of 5000 – 6000, this outboard motor is designed to excel in various boating applications.

Reliable and Efficient

The F90LB is not only powerful but also efficient. It features an alternator output of 35 Amp at wide open throttle (W.O.T.), ensuring you have ample power for your electrical needs. The 10.0:1 compression ratio, combined with an Electronic Fuel Injection (EFI) system, maximizes fuel efficiency while reducing emissions.

Precision and Control

This outboard motor comes with a range of features designed to enhance your boating experience. The through-propeller exhaust and 16-intake system provide efficient and quiet operation. The TCI Microcomputer ignition system ensures reliable starts, and the electric starting system simplifies your boating journey.

Quality and Durability

The F90LB is built to last, with a wet sump lubrication system and a recommended cooling system with thermostatic control. It has a gear ratio of 2.15:1 and offers forward, neutral, and reverse gear shifts for precise control. The 3-year limited warranty (Pleasure and Government use) and 1-year warranty for commercial use offer peace of mind and underscore Yamaha’s commitment to quality.

Unleash Your Boating Potential

Whether you’re a seasoned mariner or new to the water, the 2019 Yamaha 90 HP F90LB Outboard Motor offers top-tier performance and unwavering reliability. Elevate your boating experience and explore new horizons with Yamaha’s precision-engineered F90LB.


New, Used


  • Engine Type: Inline 4
  • Displacement: 1.8L

  • Bore x Stroke: 81 x 88.9mm (3.19 x 3.5 in)

  • Prop Shaft Horsepower: 90hp @ 5500 rpm

  • Full Throttle RPM Range: 5000 ~ 6000

  • Alternator Output at W.O.T.: 35 Amp

  • Compression Ratio: 10.0:1

  • Fuel Induction System: EFI

  • Weight*: 160kg (353 lbs)

  • Recommended Fuel: Octane 87

  • Recommended Engine Oil: Yamalube® 4M (See owner’s manual)

  • Recommended Fuel Filtration: Yamaha 10-Micron Fuel/Water Separating Filter (external)

  • C.A.R.B. Rating: 3-Star

  • Exhaust: Through Propeller

  • Intake: 16

  • Ignition: TCI Microcomputer

  • Spark Plug: LFR6A-11

  • Alternator Output: 35 Amp

  • Starting System: Electric

  • Lubrication: Wet Sump

  • Engine Oil Capacity: 3.2/3.0L

  • Recommended Cooling: Thermostatic Control

  • Ethanol Blend Limit: 10% Maximum

  • Gear Ratio: 2.15:1

  • Gear Shift: Forward, Neutral, Reverse

  • Shaft Length: 20″

  • Degree of Tilt: 70

  • Degree of Trim: -4° through +66°

  • Dry Weight: 160kg (353 lbs)

  • Mounting Centers: 26″

  • Steering Angle (maximum): 35° from center, either direction

  • Warranty: Limited 3-year Pleasure, 3-year Government, 1-Year Commercial

More Specific Features

  • Available for mechanical remote or tiller control
  • Only 353 pounds

  • Available in 20” or 25” shafts

  • Powerful 35-amp alternator

  • Optional Variable Trolling RPM via the Command Link® tachometer

Convenience and Control

  • Multi-Function Tiller Handle: The F115 and all-new F90 and F75 are compatible with Yamaha’s award winning Multi-Function Tiller Handle. It incorporates engine start/stop, emergency stop, gear shift, power trim and tilt operation, variable trolling switch, warning and controls all in one.

  • Charging Power: The F115, F90 and F75 feature three-phase alternators that produce up to 35 amps of power. For the 90 and 75 hp, that’s 40 percent more output than previous designs, and for the 115, it’s more than 45 percent more charging power. That’s plenty of electrical power for battery charging and accessories, with more to spare.

  • Variable Trolling: The F115, F90 and F75 feature Yamaha’s Variable Trolling RPM Switch (VTS®). This allows for precision adjustment of trolling speeds in 50-RPM increments, from 650 to 900 RPM for the 115 hp, and 550 to 1000 RPM for the 90 and 75 hp. 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.


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