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F90

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
Fuel Induction EFI/SOHC/4 Valves Per Cylinder
Exhaust Through Propeller
Intake Single Throttle Valve
Ignition TCI Micro Computer
Spark Plug LFR5A-11-00-000
Alternator Output 25AMP
Starting System Electric w/PTT
Lubrication Wet Sump
Engine Oil Capacity 3.7L/3.5L w/without filter
Full Throttle RPM Range 5000 ~ 6000 rpm
Cooling Water/Thermostatic Control
Recommended Engine Oil Yamalube® 4M (See owner's manual)
Recommended Fuel Regular Unleaded (Minimum Pump Octane 87)
Recommended Fuel Filtration Yamaha Mini 10-Micron Fuel/Water Separating Filter (external)
Ethanol Blend Limit 10% Maximum
Gear Ratio (25:11) 2.27:1
Gear Shift F-N-R
Shaft Length L = 20" X = 25"
Degree of Tilt 70°
Degree of Trim -4° through +16°
C.A.R.B. Rating 3-Star
Dry Weight 25" shaft / 169 kg (372 lbs) ; 20" shaft / 166 kg (366 lbs)
Steering Angle (maximum) 35° from center, either direction
Warranty 3 Year Limited Pleasure Boat - 1 Year Limited Commercial
Comparison Image
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