Yamaha 4.2L V6 Offshore F250

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Who says you have to put on the pounds to add more horses? Meet Yamaha’s Next Generation of V6 4.2L Offshore outboards. These award winners are packed with Yamaha’s legendary reliability, which is why so many anglers won’t trust anything else a hundred miles out.


Engine TypeV6 DOHC 24-Valve
Displacement4.2L (254 ci)
Bore x Stroke96 x 96mm (3.78 x 3.78 in)
Prop Shaft Horsepower250hp at 5500 rpm (F/LF250)
Compression Ratio10.3:1
Fuel InductionDOHC Fuel Injection VCT
ExhaustThrough Propeller
IntakeSingle Throttle Valve
IgnitionTCI Micro Computer
Spark PlugLFR6A-11
Alternator Output70 Amp
Starting SystemElectric
LubricationWet Sump
Engine Oil Capacity6.3L/6.0L w/with filter
Full Throttle RPM Range5000 ~ 6000 rpm
CoolingWater/Thermostatic Control
Recommended Engine OilYamalube® 4M (See owner's manual)
Recommended FuelRegular Unleaded (Minimum Pump Octane 87)
Recommended Fuel FiltrationYamaha 10-Micron Fuel/Water Separating Filter (external)
Ethanol Blend Limit10% Maximum
Gear Ratio(21:12) 1.75:1
Gear ShiftForward, Neutral, Reverse
Shaft LengthX = 25" U = 30"
Degree of Tilt67°
Degree of Trim-3° through +16°
C.A.R.B. Rating3-Star
Dry Weight25" shaft / 255 kg (562 lbs) ; 30" shaft / 259 kg (571 lbs)
Mounting Centers28.6"
Steering Angle (maximum)32° from center, either direction
Warranty3-Year Pleasure, 3-Year Government, 1-Year Commercial