The all-new Yamaha 90-horsepower In-Line Four V MAX SHO® may be the smallest in the V MAX SHO® line, but it packs the biggest punch of any 90-horse on the water. Its SOHC four-valve-per-cylinder design minimizes weight while optimizing combustion. In fact, its lightweight design combined with 1.8L displacement makes the I-4 V MAX SHO® 90 the class leader in torque and top speed. Add to that the option of a 25-inch shaft and the VF90 is an exciting new prospect for bass, walleye, inshore and muskie anglers trolling on 25-inch transom multi-species boats. The all-new Yamaha I-4 V MAX SHO® 90. A quick, little addition to our V MAX SHO family—and a day out fishing.
Engine Type
Inline 4
Displacement
1.8L
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 †
20" 353 lbs, 25" 362 lbs
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)
C.A.R.B. Rating
3-Star
Exhaust
Through Propeller
Intake
16
Ignition
TCI Microcomputer
Spark Plug
LFR5A-11
Alternator Output
35 amp
Starting System
 
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
L = 20" X = 25"
Degree of Tilt
-4° through +66°
Degree of Trim
-4° through +16°
Dry Weight
20" shaft / (160 kg) 353 lbs, 25" shaft / (164 kg) 362 lbs
Mounting Centers
26"
Steering Angle (maximum)
35° from center, either direction
Warranty
Limited Pleasure Three Years, Government Three Years, Commercial One Year