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 |