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
Alternator Output at W.O.T. - 35 Amp
Compression Ratio - 10.0:1
Fuel Induction System - EFI
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