Yamaha LF300ECB Outboard – 35-Inch Shaft | Counter Rotation | Digital Electronic Control (DEC) | Electric Start | Power Trim & Tilt | EFI with Variable Camshaft Timing | Gray
Yamaha LF300ECB Outboard – 35-Inch Shaft | Counter Rotation | Digital Electronic Control (DEC) | Electric Start | Power Trim & Tilt | EFI with Variable Camshaft Timing | Gray
Yamaha LF300ECB Outboard – 35-Inch Shaft | Counter Rotation | Digital Electronic Control (DEC) | Electric Start | Power Trim & Tilt | EFI with Variable Camshaft Timing | Gray is backordered and will ship as soon as it is back in stock.
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Description
Description
Yamaha Outboard – LF300ECB
35-Inch Shaft | Counter Rotation | Digital Electronic Control (DEC) | Electric Start | Power Trim & Tilt | EFI with Variable Camshaft Timing | Gray
The Yamaha Outboard – LF300ECB is engineered for offshore vessels that require maximum propeller depth, precise handling, and the power to take on rough seas. The counter-rotation design balances steering torque in multi-engine setups, while the 35-inch shaft offers optimal performance for tall transoms and deep-water applications.
Powered by Yamaha’s 4.2-liter V6 with Variable Camshaft Timing (VCT) and Electronic Fuel Injection (EFI), this outboard delivers impressive acceleration, mid-range punch, and fuel efficiency. The Gray finish provides a professional look and enhanced saltwater corrosion resistance.
⚠️ Important: This is a Digital Electronic Control (DEC) engine and must be installed by an authorized Yamaha dealer. Both the outboard and the DEC control system require flashing and configuration with Yamaha diagnostic tools during installation. DIY installation is not supported.
Key Features
- Engine Type: 4.2L V6, DOHC with Variable Camshaft Timing
- Horsepower: 300 HP
- Fuel System: Electronic Fuel Injection (EFI)
- Controls: Digital Electronic Control (DEC)
- Start Type: Electric Start
- Shaft Length: 35"
- Rotation: Counter Rotation
- Trim & Tilt: Power Trim & Tilt
- Color: Gray
- Alternator: High-output to power marine electronics
- Weight: Approximately 562 lbs (dry)
Why Choose the Yamaha Outboard – LF300ECB?
- Extra-Long Shaft: Ideal for deep transoms and large offshore boats
- Counter-Rotation Control: Reduces steering torque in multi-engine configurations
- DEC Precision: Smooth, responsive throttle and shifting
- Durable Marine Finish: Gray coating resists saltwater wear and UV damage
- Proven Reliability: Yamaha engineering for long-term performance
Need help choosing your engine? Check out our Yamaha engine guide.
Frequently Asked Questions
Q: Why would I need a 35-inch shaft outboard?
A: It’s designed for boats with taller transoms or applications where the propeller must remain submerged in rough water.
Q: Is this compatible with all rigging?
A: It requires Yamaha DEC rigging components, sold separately.
Q: Can I install this myself?
A: No. It must be installed and programmed by an authorized Yamaha dealer using Yamaha diagnostic tools.






