Yamaha F90

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.

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

 

*Testing conducted by Yamaha at Yamaha’s US Test Facility on a G3 Model 1860 CC under the same conditions and with each rigged for maximum performance.

https://yamahaoutboards.com/en-us/home/outboards/115-50-hp/f115#90

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) – 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)