2018 Yamaha VF90 In-Line V MAX SHO® - 25 in. Shaft

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VF90 In-Line V MAX SHO® - 25 in. Shaft



The In-Line Four V MAX SHO four strokes have achieved the unthinkable—packing signature V MAX SHO hole shot and acceleration into streamlined designs. This powerful family now includes the all-new I-4 V MAX SHO 90, which packs the biggest punch of any 90-horse on the water. Overall, this series of 1.8- and 2.8-liter dynamos features a surprising tech package with 16 valves, single- or double-overhead cams and electronic fuel injection—for maximum efficiency and high performance. This makes the I-4 V MAX SHOs perfect for smaller bass, flats and bay boats and other performance hulls. With the option of a 25-inch shaft for all of our I-4 V MAX SHO outboards, anglers prowling big waters on multi-species, bay and flats boats have a competitive edge that runs deeper than ever.

Power & Performance
  • Quiet Power and Performance: The I-4 V MAX SHO® design maximizes combustion efficiency in a way that no two stroke can, delivering clean, quiet power and performance.
  • Fuel Efficient: In-line Four V MAX SHO® designs are up to 40% more fuel efficient than traditional carbureted two strokes.
  • Optimum Power: Precision Multi-Point Electronic Fuel Injection and long-track intake system combine to maximize power and fuel efficiency across the line of In-Line Four V MAX SHO® outboards.
  • Power Management: An array of advanced sensors constantly provide vital atmospheric and engine conditions to the Engine Control Module (ECM), which instantly makes the precise adjustments for optimum performance.
Reliability & Durability
  • Better Lubrication: Wet sump pump lubrication that uses a pressurized oil delivery system through an oil pump.
  • Engine Warning System: This system protects the outboard with a range of functions including: overheat protection and low-oil-pressure warning (automatically reducing maximum RPM to 2000), over-rev protection, water-in-fuel detection, start-in-gear protection and shift-in prevention at open throttle.
  • Corrosion Protection: Combined with our proprietary alloy (YDC-30), our exclusive Phaze Five™ electro-deposited, anti-corrosive paint system provides a tough, five-layer barrier against corrosion. This protection is standard on all Yamaha I-4 V MAX SHO® four-stroke engines.
Convenience & Control
  • Extra Space: A four stroke in-line design means there's no need for an external oil tank. That means less weight and more storage room in the boat for tackle and gear.
  • Easy Rigging: I-4 V MAX SHO® outboards feature mechanical controls for easy, convenient rigging with most bass, bay and flats boats, and are compatible with analog, 6Y5 digital or Command Link® gauges.
Model Specific Features
  • The All-New VF90 In-Line Four V MAX SHO. A single-overhead-camshaft design with four valves per cylinder and 1.8-liter displacement make the I-4 V MAX SHO 90 a class leader in torque, top speed and efficiency. But it’s not only the fastest—it’s the quietest, too.* That makes for some pretty stealthy fishing.
  • 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 or our new, helm-mounted remote VTS® Switch
  • Engine Type: In-Line, Four Cylinder
  • Displacement: 1832cc/111.8 ci
  • Bore x Stroke: 81 x 88.9mm (3.19 x 3.5in)
  • Prop Shaft Horsepower: 90hp @ 5500 RPM
  • Full Throttle RPM Range: 5000 - 6000 RPM
  • Alternator Output at W.O.T.: 35 amp
  • Compression Ratio: 10.0:1
  • Fuel Induction System: EFI
  • Weight*: 362 lb.
  • Recommended Fuel: Regular Unleaded (Minimum Pump Octane 87)
  • Recommended Engine Oil: Yamalube® 4M (See owner's manual)
  • Recommended Fuel Filtration: Yamaha 10-Micron Fuel/Water Separating Filter (external)
  • Exhaust: Through Propeller
  • Intake: 16
  • Ignition: TCI Microcomputer
  • Spark Plug: LFR5A-11
  • Alternator Output: 35 amp
  • Lubrication: Wet Sump
  • Engine Oil Capacity: 3.2L / 3.0L (with / without filter)
  • Recommended Cooling: Water, Thermostatic Control
  • Ethanol Blend Limit: 10% Maximum
  • Gear Ratio: (28/12) 2.33
  • Gear Shift: F-N-R
  • Shaft Length: X = 25 in.
  • Degree of Tilt: -4° through +66°
  • Degree of Trim: -4° through +16°
  • C.A.R.B. Rating: Yamaha 10-Micron Fuel/Water Separating Filter (external)
  • Recommended Fuel Filtration: 3-Star
  • Dry Weight: 362 lb.
  • Mounting Centers: 26 in.
  • Warranty: Pleasure Three Years, Government Three Years, Commercial One Year
*Testing conducted by Yamaha at Yamaha’s US Test Facility on a G3 Eagle Talon™ under the same conditions and with each rigged for maximum performance. Weight refers to shortest shaft length, and is measured without motor oil, gearcase oil and propeller (except models 25 hp and under, which include a standard propeller). All Jet model weights include the jet pump assembly (weight estimated).



Engine Type
In-Line, Four Cylinder
Bore x Stroke
3.19 x 3.5 in. (81 x 88.9mm)
1832cc/111.8 ci


Shaft Length
25 in.
362 lb.


Propshaft Horsepower
90 hp @ 5500 rpm
Full Throttle Operating Range
5000 - 6000 rpm
Gear Ratio / Shift
(28/12) 2.33 / F-N-R
Fuel Induction
35 amp
Pleasure Three Years, Government Three Years, Commercial One Year

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