MIDRANGE 90 hp

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)
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″ – 25″
Degree of Tilt 70
Degree of Trim -4° through +66°
Dry Weight 20″ shaft / 160kg (353 lbs), 25″ shaft / 164kg (363 lbs)
Mounting Centers 26″
Steering
Steering Angle (maximum) 35° from center, either direction
Warranty Limited 3-year Pleasure, 3-year Government, 1-Year Commercial
Category:

Description

MIDRANGE 90 hp

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.

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