F300

Yamaha V6 Offshore Range Description

Yamaha engineers have managed to push our V6 4.2L Offshore technology even further, making this new breed of outboards:

Leading Time-to-Plane
Their class-leading, 4.2L big-bore design means they have the best time-to-plane in their class. When cruising at 4000 RPM, the F300’s speed is up to 19% faster than other 300hp competitors.

Class-Leading Displacement
This next generation of V6 Offshore outboards features the first-ever marine application of plasma-fused sleeveless cylinders. This allowed engineers to increase the displacement to a class-leading 4.2 liters, without enlarging the outer diameter of the cylinder, keeping the motor light. The result is an outboard that is not only the lightest in its class, but that also has the largest displacement. No wonder it’s 19% faster than many other 300hp competitors.

Groundbreaking Fuel Economy
These V6s feature up to 17% better long-range fuel economy at 3500 RPM than comparable 300hp four strokes, thanks in part to a single, electronically controlled throttle valve, precision multi-point fuel injection and micro-textured cylinder walls.

Light Weight / Industry-First Technology
Through incredible innovations like plasma-fused sleeveless cylinders, Yamaha engineers have managed to shave every possible ounce from these outboards, without sacrificing a shred of durability or reliability. As a result, they’re up to 73 pounds lighter than other V6 outboards in their class.

Intuitive Control
Available with the Helm Master^® fully integrated boat control system in twin-, triple and quad-outboard configurations.

Engine Type	V6 (60º)
Displacement	4.2L (254 ci)
Bore x Stroke	96 x 96mm (3.78 x 3.78 in)
Prop Shaft Horsepower	300hp at 5500 rpm (F/LF300)
Compression Ratio	10.3:1
Fuel Induction	DOHC Fuel Injection VCT
Exhaust	Through Propeller
Intake	Single Throttle Valve
Ignition	TCI Micro Computer
Spark Plug	LFR6A-11-00-000
Alternator Output	70 Amp
Starting System	Electric
Lubrication	Wet Sump
Engine Oil Capacity	6.3L/6.0L w/with 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 89)
Recommended Fuel Filtration	Yamaha 10-Micron Fuel/Water Separating Filter (external)
Ethanol Blend Limit	10% Maximum
Gear Ratio	(21:12) 1.75:1
Gear Shift	Forward, Neutral, Reverse
Shaft Length	X = 25" U = 30"
Degree of Tilt	67°
Degree of Trim	-3° through +16°
C.A.R.B. Rating	3-Star
Dry Weight	25" shaft / 255 kg (562 lbs) ; 30" shaft / 259 kg (571 lbs)
Mounting Centers	28.6"
Steering Angle (maximum)	32° from center, either direction
Warranty	3-Year Pleasure, 3-Year Government, 1-Year Commercial
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