Yamaha Outboards Midrange Four Stroke F90

Nothing beats a day on the water with family and friends. And nothing powers those moments quite like Yamaha’s versatile line of midrange outboards. Ranging in size from the mighty F90 down to the nimble F25, they offer just the right amount of power for a variety of applications. These 2-, 3- and 4-cylinder dynamos are quiet, clean-burning, reliable performers. But that’s not all they have to offer.

 

Specifications are subject to change without notice

CONVENIENCE/CONTROL

  • Easy Maintenance
  • External Tilt Switch
  • Freshwater Flush
  • New Style Rigging Grommet
  • Power Trim & Tilt

POWER/PERFORMANCE

  • 4-Valves Per Cylinder
  • DOHC (Double Overhead Camshaft)
  • Four Independent Fuel Injectors
  • Four Stroke Engine Design
  • Labyrinth Exhaust
  • Lightweight Compact Design
  • Long Track Induction System
  • Multi-Point Precision Fuel Injection
  • Powerful 4-Cylinder 97 cu in.

RELIABILITY/DURABILITY

  • 5-Step Anti-Corrosion Paint Process
  • Direct Drive System
  • Electro-deposited Powerhead Paint Process
  • Engine Warning System
  • High Output Alternator
  • Magnetic Drain Plug
  • Sacrificial Anodes
  • Single Throttle Valve
  • SST Drive, Prop, Shift Shafts
  • SST Steering Tube
  • TCI Microcomputer
  • Top Mounted Electrical
  • Wet Sump Lubrication
  • YDC-30 Aluminum Alloy
  • There are no features available

Engine Specs

  • Engine Type : In-Line Four Cylinder
  • Displacement : 97 ci (1596 cc)
  • Bore x Stroke : 79 x 81.4mm (3.11 x 3.20in)
  • Prop Shaft Horsepower : 90hp @ 5500rpm
  • Compression Ratio : 9.6:1
  • RPM Range : 5000 ~ 6000 rpm
  • Fuel/Induction System : EFI/SOHC/4 Valves Per Cylinder
  • Exhaust : Through Propeller
  • Intake : Single Throttle Valve
  • Cooling : Water/Thermostatic Control
  • Ignition System : TCI Micro Computer
  • Spark Plug : LFR5A-11-00-000
  • Starting System : Electric w/PTT
  • Lubrication : Wet Sump
  • Degree of Trim/Tilt : 4° through +16°/70°
  • Oil Capacity : 3.7L/3.5L w/without filter
  • Recommended Engine Oil : Yamalube® 4M (See owner's manual)
  • Gear Shift : F-N-R
  • Gear Ratio : (25:11) 2.27:1
  • Shaft Length : L = 20" X = 25"
  • Recommended Fuel : Regular Unleaded (Minimum Pump Octane 87)
  • Steering Angle (maximum) : 35° from center, either direction
  • Weight : 25" shaft / 169 kg (372 lbs) ; 20" shaft / 166 kg (366 lbs)
  • CARB Rating : 3-Star
  • Warranty : 3 Year Limited Pleasure Boat - 1 Year Limited Commercial
  • Alternator Output : 25AMP
  • Ethanol Blend Limit : 10% Maximum
  • Recommended Fuel Filtration : Yamaha Mini 10-Micron Fuel/Water Separating Filter (external)
Product: Engine
Condition: New
Make: Yamaha
Model: Midrange Four Stroke

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