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Yamaha F300USB2 300HP – V6 FourStroke DES Integrated 30-Inch
Yamaha F300USB2 – 300HP DES features a flagship four-stroke propulsion system in Pearlescent White, combining a 30-inch ultra-long shaft with integrated Digital Electric Steering (DES). This high-end V6 unit is fully compatible with Helm Master EX®, providing superior docking control and automated fishing modes for the most demanding high-transom offshore environments.
- Precision Shaft Geometry Data: 30-inch ultra-long shaft geometry.
- Internal Engine Configuration Type: V6 60-Degree DOHC 24-Valve 4.2L.
- Advanced Fuel Delivery System: Digital Electronic Control (DEC) with DES and VCT.
- Recommended Vessel Application Use: Perfect for premium high-transom sportfishers and yachts.
- Factory Protection Service Plan: 3-year limited factory warranty coverage.
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Description
Yamaha F300USB2 300HP White DES Integrated
The Yamaha F300USB2 300HP outboard motor is the pinnacle of luxury marine engineering, featuring an advanced V6 4.2L 24-valve DOHC engine architecture in a stunning Pearlescent White finish. This high-performance powerhead utilizes a massive 4.2-liter displacement while maintaining a competitive dry weight of 600 lbs to ensure an elite power-to-weight ratio for premium offshore vessels. Its 30-inch ultra-long shaft configuration is specifically designed for high-transom platforms and multi-engine setups that require reliable marine propulsion systems for consistent propeller immersion and stable integrated digital steering.
Technical Specifications of Yamaha F300USB2
- Robust V6 4.2L DOHC architecture delivers 300 horsepower with elite volumetric engine efficiency.
- Premium 272 kg design features a 30-inch ultra-long shaft for specialized boat transom configurations.
- Precision Multi-Point EFI ensures consistent combustion across the 5000 to 6000 RPM power band.
- Integrated Digital Electric Steering (DES) provides effortless vessel handling and precise control at all speeds.
- Digital Electronic Control (DEC) provides smooth shifting and precise throttle management for luxury helms.
- High-output alternator (50-70 Amps) ensures navigation displays and digital sonar systems remain fully powered.
- Investment is protected by a limited 3-year factory warranty and Japanese maritime engineering standards.
White V6 Offshore Finish
The F300USB2 features a stunning Pearlescent White finish to provide a high-end aesthetic match for luxury center consoles and high-performance hulls. Its robust 24-valve V6 configuration maximizes air intake to ensure rapid and responsive hole-shot acceleration under various loads. Luxury boat owners experience smooth power delivery and reduced vibration when cruising through technical coastal waterways at high speed with digital precision.
Integrated DES Technology
This 300HP outboard features Integrated Digital Electric Steering (DES) for a smooth and responsive boating experience without external hydraulic lines. This digital steering system provides a clean bilge while offering adjustable steering friction and precision for the captain. Professional anglers can enjoy effortless vessel command during long offshore tournament days without operator fatigue or mechanical lag.
30-Inch Ultra-Long Shaft
The F300USB2 motor integrates an ultra-long 30-inch shaft length explicitly calibrated for deep-V offshore vessel transom dimensions. This specific lower unit immersion prevents propeller aeration in following seas while maintaining a secure grip on the water surface during turns. US offshore boaters gain improved steering authority and stable tracking during aggressive maneuvers in open sea conditions.
Digital Control DEC Interface
The F300USB2 utilizes Digital Electronic Control (DEC) to provide a smooth and cable-free throttle and shifting experience at the helm. This system is fully compatible with Helm Master EX for advanced vessel positioning and joystick control during technical maneuvers. Captains gain effortless control of multiple engine setups for a complete and modern helm solution on luxury offshore vessels.
Yamaha Limited Warranty
The Yamaha F300USB2 includes a comprehensive 3-year limited factory warranty to safeguard your primary maritime investment from manufacturing defects. This protection plan ensures long-term maritime durability and covers critical structural or essential mechanical components during usage. Owners benefit from an extensive service network and genuine Japanese parts availability for all warranty repairs.
Offshore Vessel Compatibility
The F300USB2 300HP provides the perfect power balance for modern luxury fiberglass hulls requiring integrated steering and ultra-long shaft setup. Its 600 lbs design provides excellent stability while maximizing displacement and planing speeds on open coastal water. Modern vessel owners enjoy the combination of sleek white styling and legendary four-stroke performance on the water.
Pro Maintenance Care
This Digital V6 engine is built with high-quality sacrificial anodes to prevent destructive galvanic corrosion daily in saltwater. Regular maintenance of the power trim and tilt system ensures smooth engine adjustments in harsh coastal environments. Pro Tip: Flush the internal cooling passages with fresh water after every launch to maintain cooling system integrity and prevent salt buildup.
YAMAHA F300USB2 Full Specs
| Engine type | V6 / DOHC / 24 valves |
| Displacement | 4.2L |
| Bore x stroke | 96 x 96 mm (3.78 x 3.78 in) |
| Horsepower | 300hp at 5500 RPM |
| Full-throttle rpm range | 5000 - 6000 RPM |
| Compression ratio | 10.3:1 |
| Fuel induction | Multi-Point Electronic Fuel Injection |
| Recommended fuel | Octane 89 |
| Ignition | TCI Microcomputer |
| Alternator output | 50 - 70 Amp |
| Gear ratio | 1.75:1 |
| Gear shift | Forward, Neutral, Reverse |
| Shaft length | 30 inch |
| Dry weight | 600 lbs (272 kg) |
| Controls | Digital Electronic Control (DEC) |
| Steering | Integrated Digital Electric Steering (DES) |
| Trim and tilt | Power Trim & Tilt |
| Exhaust | Through Propeller |
| Cooling system | Water, Thermostatic Control |
| Lubrication | Wet Sump |
| Oil capacity | 6.3L (6.7 Quarts) with filter |
| Emissions rating | C.A.R.B. 3-Star |
Yamaha F300USB2 300HP DES Technical Guide
The 4.2L V6 engine consumes approximately 26.2 gallons per hour at wide open throttle. Monitoring the gallons per hour rate is critical for offshore range planning on this 30-inch shaft model featuring integrated Digital Electric Steering (DES).
This engine uses Yamaha’s advanced anti-corrosion coating and freshwater flushing port. Check the sacrificial aluminum anode locations on the transom bracket and 30-inch gearcase to mitigate the effects of electrolysis in saltwater.
The oil capacity is 6.7 US quarts including the filter change. Consistently checking the FC-W engine oil capacity is mandatory to protect the plasma-fused cylinder walls and ensure reliable performance during sustained operation.
The motor produces 70 amps of charging power to support the integrated DES and helm electronics. A high-output battery with 875 minimum marine cranking amps is required for the digital systems and starting demands.
This model requires Saltwater Series II propellers; the pitch should be selected to maintain a 5000-6000 RPM wide open throttle window for optimal engine health and performance.
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