Yamaha LF300USB 300HP DES Digital Counter 30″ Outboard Motor
Description
Yamaha 300HP LF300USB DES Digital Counter 30in
The Yamaha 300HP LF300USB is a robust 4.2L V6 outboard featuring integrated Digital Electric Steering (DES), counter-rotation, and a 30-inch ultra-long shaft. Tailored for the port side of large-scale offshore center consoles with tall transoms, this model provides effortless, precise handling without the complexity of traditional hydraulic systems. The 4166cc DOHC architecture emphasizes hydrodynamic efficiency and massive mid-range punch, ensuring that energy is efficiently translated into thrust while the counter-rotating gearcase neutralizes propeller torque for a balanced driving experience.
Focused on superior operational durability, the LF300USB utilizes Yamaha’s proprietary Phaze Five anti-corrosion system and high-grade marine alloys to safeguard against oxidation during prolonged offshore service. The engine uses advanced EFI technology and VCT to optimize power delivery and fuel economy at cruising speeds. Maintenance effort is significantly reduced by the on-water serviceability and easy-access service points. This model features a high-output 70-amp alternator (net), providing massive power reserves to maintain battery health and support essential navigational electronics, gyrostabilizers, and sound systems.
Key Features of Yamaha LF300USB
- 4166cc 24-Valve 60-Degree V6.
- 300 Horsepower Prop Shaft Rating.
- 30-Inch Shaft 600 lbs Weight.
- Integrated Digital Electric Steering (DES).
- Counter-Rotation Gearcase for Multi-Engine.
- 70 Amp Total Output Alternator (Net).
- 1.75:1 Ratio Performance Gearcase.
Yamaha LF300USB Specs
| Brand | Yamaha |
| Full Model Code | LF300USB (30in DES Counter) |
| Country of Origin | Japan |
| Engine Family/Series | V6 Offshore DES Integrated |
| Engine Type | V6 (60°), 4-Stroke |
| Displacement | 4.2L |
| Horsepower | 300 HP |
| Full Throttle RPM Range | 5000-6000 |
| Fuel Induction System | EFI |
| Alternator Output | 50-70 Amps |
| Gear Ratio | 1.75:1 |
| Shaft Length | U: 30in |
| Dry Weight | 271 kg |
| Bore x Stroke | 96.0x96.0mm |
| Starting & Steering System | Electric / Integrated DES Steering (Left Rotation) |
| Trim/Tilt Method | Power Trim & Tilt |
| Oil Capacity | 6.3L |
| Recommended Fuel | 89 Octane |
| Standard Warranty | 3-Year |
| Application | Port-side engine for premium 30in transom twin-setups with Helm Master EX. |
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