1.4L In-Line 4 90 HP

1.4L In-Line 4 90 HP

Outboard
Overview

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.

Engine TypeInline 4
Displacement1.8L
Bore x Stroke81 x 88.9mm (3.19 x 3.5 in)
Prop Shaft Horsepower90hp @ 5500 rpm
Full Throttle RPM Range5000 ~ 6000
Alternator Output at W.O.T.35 Amp
Compression Ratio10.0:1
Fuel Induction SystemEFI
Weight †160kg (353 lbs) - 164kg (362 lbs)
Recommended FuelOctane 87
Recommended Engine OilYamalube® 4M (See owner's manual)
Recommended Fuel FiltrationYamaha 10-Micron Fuel/Water Separating Filter (external)
C.A.R.B. Rating3-Star
ExhaustThrough Propeller
Intake16
IgnitionTCI Microcomputer
Spark PlugLFR6A-11
Alternator Output35 Amp
Starting SystemElectric
LubricationWet Sump
Engine Oil Capacity3.2/3.0L
Recommended CoolingThermostatic Control
Ethanol Blend Limit10% Maximum
Gear Ratio2.15:1
Gear ShiftForward, Neutral, Reverse
Shaft Length20" - 25"
Degree of Tilt70
Degree of Trim-4° through +66°
Dry Weight20" shaft / 160kg (353 lbs), 25" shaft / 164kg (363 lbs)
Mounting Centers26"
Steering Angle (maximum)35° from center, either direction
WarrantyLimited 3-year Pleasure, 3-year Government, 1-Year Commercial

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