Yamaha LF350USA Outboard Motor

30-Inch Shaft | 4.3-Liter V6 | Digital Electronic Control | Electronic Fuel Injection | Electric Start | Power Trim and Tilt | Gray | Counter Rotation

The Yamaha LF350USA is the 30-inch shaft, counter-rotation version of Yamaha’s most powerful V6 offshore outboard. Designed specifically for multi-engine offshore rigs, it provides balanced thrust, reduced steering torque, and improved handling when paired with standard rotation models. Powered by the 4.3-liter V6 platform, the LF350USA delivers maximum horsepower and torque in a lighter and more efficient package than older V8 designs. With Yamaha’s Digital Electronic Control, it ensures smooth throttle response, effortless shifting, and precise offshore handling.

⚠️ Important: This is a Digital Electronic Control engine and must be installed by an authorized Yamaha dealer. Both the outboard and the Digital Electronic Control system require flashing and configuration with Yamaha diagnostic tools during installation. DIY installation is not supported.

Key Features:

• 4.3-Liter V6 Offshore Power – Yamaha’s largest and most capable V6, engineered for offshore reliability.
• 30-Inch Shaft – Provides deeper mounting for large boats with high transoms.
• Counter Rotation Model – Balances thrust in twin- or triple-engine setups, reducing steering torque.
• Gray Finish – Rugged, clean styling suitable for offshore conditions.
• Digital Electronic Control (DEC) – Delivers refined throttle response and seamless electronic shifting.
• Electronic Fuel Injection (EFI) – Efficient and precise fuel delivery for consistent performance.
• Electric Start with Power Trim and Tilt – Dependable ignition and fingertip trim adjustments for smooth handling.
• Maximum RPM Range – 5000–6000 RPM, tuned for acceleration and offshore cruising efficiency.
• Displacement – 4.3 liters (4332 cc), Yamaha’s most advanced V6 offshore engine.
• Alternator Output – 70 amps, providing plenty of charging power for onboard electronics and accessories.
• Corrosion Protection System – Yamaha’s alloys, protective coatings, and flush system extend saltwater durability.
• Noise and Vibration Reduction – Tuned intake and exhaust reduce vibration for a smoother, quieter ride.
• Approximate Weight – 804 pounds, offering balanced performance in counter-rotation setups.

The Yamaha LF350USA is purpose-built for multi-engine offshore boats where stability and balance are essential. With counter-rotation capability, advanced electronic controls, and Yamaha’s proven offshore dependability, it delivers confidence and control in demanding conditions.

Need help choosing your engine? Check out our Yamaha engine guide.

---

Frequently Asked Questions

Q: What does the “LF” mean in LF350USA?
A: The “LF” indicates a left-hand counter-rotation model, designed to pair with standard rotation engines in multi-engine offshore rigs.

Q: How does the LF350USA differ from the F350USA?
A: Both share Yamaha’s 4.3-liter V6 platform, 30-inch shaft length, and features. The LF350USA is counter-rotation, while the F350USA is standard rotation.

Q: What types of boats benefit most from the LF350USA?
A: Large center consoles, offshore fishing boats, and multi-engine rigs where counter-rotation reduces steering torque and improves handling.