4.2L V6 300 HP

4.2L V6 300 HP

Outboard
Overview

Our V6 4.2-liter F300 is a reliable, offshore favorite—and it's only getting better. It now features a fresh, new cowling design (with engine-mounted Propeller Indicator Lights if rigged with Helm Master® EX), new integrated digital electric steering*, rerouted exhaust for enhanced reverse thrust and is available in Yamaha gray or pearlescent white. It’s destined to be a top choice offshore for years to come.

Recommended fuel: 89 Octane
Shaft lengths available: 25”, 30” and 35” (30" and 35” on F300 DEC only)
Alternator output: up to 70 amp

*Mechanical F225, F250, and F300 models remain unchanged and are available in gray only.

Weight	250 kg (551 lbs) / 254 kg (562 lbs) / 265 kg (588 lbs)
Full Throttle RPM Range	5000 ~ 6000 rpm
Fuel Induction System	EFI
Recommended Engine Oil	Yamalube® 4M (See owner's manual)
Engine Type	V6
Displacement	4.2L
Bore x Stroke	96 x 96mm (3.78 x 3.78 in)
Prop Shaft Horsepower	300hp at 5500 rpm
Alternator Output at W.O.T.	50 - 70 Amp
Compression Ratio	10.3:1
Recommended Fuel	Octane 89
Recommended Fuel Filtration	Yamaha 10-Micron Fuel / Water Separating Filter (external)
C.A.R.B. Rating	3-Star
Exhaust	Through Propeller
Intake	24
Ignition	TCI Microcomputer

Spark Plug	LFR6A-11
Starting System	Electric
Lubrication	Wet Sump
Engine Oil Capacity	6.3L/6.0L
Recommended Cooling	Thermostatic Control
Ethanol Blend Limit	10% Maximum
Gear Ratio	1.75:1
Gear Shift	Forward, Neutral, Reverse
Shaft Length	25" - 30" - 35" (F300 DEC Only)
Degree of Tilt	Mechanical 67°, Digital Electric Steering 69°, Bolt-on steering 70°
Degree of Trim	-3° through +16°
Mounting Centers	28.5"
Steering	Integrated, Electric Actuation
Steering Angle (maximum)	32° from center, either direction
Warranty	Limited 3-Year Pleasure, 3-Year Government, 1-Year Commercial