Yamaha Outboards 300HP | LF300XCB

Yamaha Outboards 300HP | LF300XCB: Counter-Rotation Power with Advanced Digital Control

Elevate your multi-engine boating experience with the Yamaha LF300XCB outboard motor.

This 300HP V6 4-stroke engine is specifically engineered as the counter-rotation (left-hand) partner for twin or triple installations on vessels with a standard 25-inch shaft length.

The LF300XCB features Yamaha’s advanced Digital Electronic Control (DEC) “drive-by-wire” throttle and shift, ensuring incredibly smooth and responsive operation. Designed for seamless compatibility with Yamaha’s versatile Helm Master EX® system (with necessary steering components), this outboard provides a powerful, reliable, and highly refined foundation for optimal control and handling on a wide range of offshore and large recreational boats.

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Why the Yamaha LF300XCB is Essential for Balanced Multi-Engine Performance

The Yamaha LF300XCB is a cornerstone of modern multi-engine configurations. Its counter-rotation (left-hand) propeller spin, when paired with a standard rotation F300XCB, is critical for neutralizing propeller torque. This results in dramatically improved steering ease, enhanced straight-line tracking, and superior overall boat stability—especially vital in rough offshore conditions. The 25-inch shaft length makes it the perfect fit for the vast majority of offshore boats and large family cruisers. Coupled with Yamaha’s precise Digital Electronic Control (DEC) system and ready integration with the expansive Helm Master EX® suite, the LF300XCB offers the precise power and sophisticated control needed to navigate, fish, and cruise with ultimate confidence and comfort.

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Key Features & Benefits: Command Your Vessel with Digital Precision and Balanced Thrust

Let’s explore the cutting-edge technologies and thoughtful engineering that make the LF300XCB a leading choice for high-performance, multi-outboard setups.

Potent 4.2L Big-Bore V6 for Unrivaled Output

At the very heart of the LF300XCB is a formidable 4.2L (4169cc) 60-degree V6 engine. This “big-bore” displacement is achieved through an advanced thermally applied plasma fusion process on the cylinder walls. This innovative process eliminates conventional steel cylinder sleeves. Instead, the cylinder walls are an impressive 60% harder than steel. Consequently, this allows for larger cylinder bores. This means significantly more power and torque without increasing outer engine dimensions. This design also contributes to lighter weight, superior cooling, and reduced internal friction. All these factors enhance both performance and long-term reliability. Therefore, expect immediate, exhilarating power delivery whenever you demand it.

Digital Electronic Control (DEC) for Smooth, Precise Shifts

The LF300XCB features Yamaha’s advanced Digital Electronic Control (DEC) system for both throttle and shift. This “drive-by-wire” technology replaces traditional mechanical cables with electronic signals, providing:

• Silky-Smooth Shifting: Effortless and precise gear changes, enhancing overall driving comfort.
• Responsive Throttle Control: Instantaneous engine response to your throttle inputs, ensuring precise speed management.
• Reduced Rigging Clutter: A cleaner helm and transom area due to the absence of mechanical cables.
• Effortless Multi-Engine Sync: Perfect synchronization in dual or triple engine applications, simplifying operation.

Helm Master EX® System Ready (with Steering Components)

The LF300XCB is designed for seamless integration with Yamaha’s optional Helm Master EX® boat control system. While the LF300XCB typically utilizes a remote hydraulic steering system, it can be upgraded with Yamaha’s bolt-on Digital Electric Steering (DES) to unlock the full suite of Helm Master EX capabilities, including:

• Joystick Control: Unparalleled maneuverability for effortless docking and precise positioning in tight spaces (especially with multi-engine setups).
• Autopilot Functionality: Features like Course Hold, Heading Hold, and Track Point for relaxed, hands-free navigation on long runs.
• SetPoint™ Modes: StayPoint™, FishPoint™, and DriftPoint™ automatically maintain your boat’s position or heading, revolutionizing fishing, waiting at docks, or holding position in current.
• Pattern Steer: Pre-programmed fishing patterns for precise lure presentation and efficient searching.

This modular system allows you to customize your level of boat control to match your specific needs and budget, providing a truly adaptable and future-proof platform.

Precision Counter-Rotation for Enhanced Balance

The LF300XCB’s left-hand (counter-clockwise) propeller rotation is paramount for multi-engine configurations. When precisely paired with a standard right-hand rotation F300XCB, the opposing forces generated by the propellers effectively neutralize each other. This dramatically reduces steering effort, eliminates prop walk, and results in a more stable, balanced, and comfortable ride. It provides superior straight-line tracking and enhanced maneuverability, particularly at low speeds and in reverse, which is crucial when docking or backing down on fish with a large boat.

Versatile 25-inch Shaft Length

The 25-inch (643mm) shaft length of the LF300XCB is the most common and versatile shaft length for a wide array of boats. It’s ideally suited for twin or triple-engine setups on bigger offshore fishing machines, multi-purpose family cruisers, and large bay boats. This length ensures optimal propeller submersion for balanced performance in diverse conditions.

Exceptional Fuel Efficiency for Extended Range

Despite its commanding power, the LF300XCB boasts outstanding fuel efficiency. Its Precision Multi-Point Electronic Fuel Injection (EFI) system ensures precise fuel metering. It optimizes combustion for excellent economy. This intelligent system, combined with friction-reducing micro-textured cylinder walls, delivers superb fuel economy across the entire RPM range. Thus, you can extend your cruising range. Spend more time enjoying the water, and less time at the fuel dock.

High-Output Charging for Extensive Electronics

Modern, well-equipped boats demand substantial electrical power. The LF300XCB impressively produces up to 70 gross amps of charging power. This ample output reliably powers your growing array of onboard electronics. This includes multiple fish finders, sophisticated navigation systems, and other high-demand accessories. Furthermore, this ensures all your critical systems remain fully operational throughout your longest trips.

Smooth, Quiet, and Refined Operation

Yamaha engineers have meticulously refined the LF300XCB for an impressively smooth and quiet boating experience. Engine exhaust gases are strategically routed. They pass through a labyrinth of passages. Then, they exit via an idle exhaust relief outlet, significantly reducing sound. The design minimizes vibration and noise, creating a more comfortable and enjoyable time on the water, even during extended journeys.

Built for Unwavering Durability and Smart Maintenance

The LF300XCB is inherently built tough. It withstands the rigors of heavy use and harsh marine environments. Its advanced cowling drain system efficiently drains any water. This protects crucial internal components. Incoming air routes through a labyrinth of passages. These effectively trap and drain water, ensuring maximum reliability. Additionally, the outboard features Thrust Enhancing Reverse Exhaust (TERE). This innovative system keeps exhaust bubbles away from the propeller. This occurs below 2500 RPM and when in reverse. This means the prop bites only clean water, resulting in outstanding reverse thrust and control. This is especially helpful when backing down on fish or maneuvering a large vessel in tight spaces.

For ultimate convenience, the LF300XCB includes Yamaha’s exclusive TotalTilt™ Feature. A swift double-tap of the trim button performs a full tilt up or down. This makes trailering and shallow water navigation incredibly quick. This feature is also handy for propeller changes or docking.

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Technical Specifications (Yamaha LF300XCB – Extra-Long Shaft, Counter-Rotation, DEC):

• Engine Type: 4-Stroke, 24-Valve, DOHC with VCT, 60-degree V6
• Prop Shaft Horsepower: 300 hp (223.9 kW)
• Displacement: 4169 cm³ (4.2L)
• Bore x Stroke: 96.0 x 96.0 mm
• Full Throttle Operating Range: 5000-6000 r/min
• Fuel Induction System: Electronic Fuel Injection (EFI)
• Lubrication System: Wet Sump
• Engine Oil Capacity: 6.3 L (with filter)
• Alternator Output: 70 A (gross, 55A battery charging)
• Starting System: Electric Starter
• Steering: Remote Control (Hydraulic or optional bolt-on Digital Electric Steering for Helm Master EX)
• Trim Control System: Power Trim and Tilt with TotalTilt™
• Gear Ratio: 1.75:1
• Shaft Length: X: 643 mm (25.3 inch) – This 25-inch shaft length is ideal for a wide range of standard transom boats.
• Dry Weight: 263 kg (580 lbs) – Weight is approximate and depends on specific configuration.
• Propeller Rotation: Counter-clockwise (Left-hand rotation) – Essential for twin/triple engine installations with a standard F300XCB to neutralize torque and improve handling.
• Ignition System: TCI Micro-computer
• Recommended Fuel: Unleaded gasoline (minimum 89 octane)
• Cooling System: Raw-water, thermostatically controlled
• Exhaust System: Through propeller hub (with Thrust Enhancing Reverse Exhaust)
• Controls: Digital Electronic Controls (DEC) – Required for full functionality and Helm Master EX compatibility.

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Optimize Your Rig with Genuine Yamaha Accessories:

To truly unlock your LF300XCB’s full potential in a multi-engine setup, consider integrating these genuine Yamaha accessories:

• Yamaha Helm Master EX® System Components: Explore joystick control, autopilot, and SetPoint™ features by adding the necessary Helm Master EX components, including the bolt-on Digital Electric Steering for full integration.
• Yamaha CL5 or CL7 Digital Displays: These touchscreen displays provide comprehensive engine data, navigation, and seamless control for Helm Master EX features.
• Saltwater Series II™ HP Propellers: These high-performance propellers are specifically designed to complement Yamaha’s V6 Offshore outboards. They offer excellent performance and feature the Shift Dampener System (SDS®) for smoother, quieter shifting. Ensure you select a left-hand rotation propeller with the appropriate pitch and diameter for the LF300XCB.
• Yamaha 10-Micron Water Separating Fuel Filter: This external filter provides superior protection against water and contaminants, further enhancing reliability and extending engine longevity.

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Power Your Journey: The Yamaha LF300XCB Advantage

The Yamaha LF300XCB is not merely a powerful outboard; it is a sophisticated, precision-engineered component for the most demanding multi-engine boat systems. It embodies Yamaha’s legacy of uncompromising quality, advanced engineering, and unwavering reliability. With its potent 300HP, advanced Digital Electronic Control, versatile 25-inch shaft, counter-rotation, and seamless Helm Master EX® compatibility, it offers an unmatched level of control, convenience, and confidence on the water. It’s the ideal choice for boaters who demand cutting-edge technology paired with Yamaha’s legendary performance for their offshore and large recreational vessels.

Ready to experience the confident power and precision control of the Yamaha LF300XCB for yourself? Contact us today to discuss your specific multi-engine boating requirements and discover how this advanced outboard can transform your time on the water. Get a personalized quote. Or, explore our full selection of Yamaha outboards. Our dedicated team is here to help you find the ideal power solution for your next marine adventure!