Your Chesapeake Bay Boating Connection for 50+ years!

Engine Type: In-Line 4

Displacement: 1.8L

Bore x Stroke: 81 x 88.9mm |3.19 x 3.5in

Prop Shaft Horsepower: 90hp at 5500 RPM

Full Throttle RPM Range: 5000 - 6000 RPM

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

Compression Ratio: 10.0:1

Fuel Induction System: EFI

Weight*: 160kg (353 lbs) - 164kg (362 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)

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

The all-new 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 and streamlines design. In fact, it’s 13 pounds lighter than previous designs. A lighter, more powerful design gives the F90 blistering speed that’s 1.5 mph faster than competing outboards.*

• 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

* Weight refers to shortest shaft length, and is measured without motor oil, gearcase oil and propeller (except models 25 hp and under, which include a standard propeller).