Yamaha F115LB2 115HP in White 20″ Shaft

Yamaha F115LB2 115HP 4-Stroke DOHC

The Yamaha F115LB2 outboard motor represents a pinnacle of marine engineering, generating a robust 115 horsepower through its advanced L4 four-stroke architecture. This 1.8-liter powerhead features a precision-engineered 1832cc displacement and maintains a remarkably competitive dry weight of just 377 lbs, offering boaters a class-leading power-to-weight ratio for superior agility. Its standard 20-inch shaft configuration is specifically designed to meet the rigorous demands of fiberglass center consoles and aluminum bay boats, providing the necessary depth for consistent cooling and maximum hydrodynamic efficiency during high-speed coastal transit. The recommended full-throttle operating range for the F115LB2 115HP is a wide 5000-6000 full-throttle RPM range, managed by a sophisticated Multi-Point Electronic Fuel Injection system for optimized volumetric efficiency. The specialized 2.15:1 gear ratio effectively translates mechanical energy from these reliable marine propulsion systems into low-end torque for instantaneous hull planing. US coastal anglers and commercial maritime operators consistently depend on this Japanese-engineered platform for its reliable operation, ensuring safe and efficient navigation through unpredictable offshore environments found in marine open-water missions.

Technical Specifications of Yamaha F115LB2

- This outboard utilizes a robust L4 1832cc DOHC architecture to deliver 115 horsepower efficiently.
- The lightweight 171 kg design features a 20-inch shaft length for standard high-transom boats.
- Advanced Electronic Fuel Injection is designed to support precise combustion across the 5000-6000 RPM wide-open throttle band.
- A specialized 2.15 to 1 gear ratio provides mechanical leverage for heavy hull thrust.
- Standard right-hand rotation and remote mechanical steering allow for predictable vessel handling and control.
- An onboard 35-amp alternator helps support critical navigation displays and sonar equipment remain fully powered.
- Your investment is protected by a 3-year limited factory warranty backed by Japanese manufacturing standards.

F115LB2 DOHC Tech

The Yamaha F115LB2 utilizes a 16-valve DOHC configuration within its 1.8-liter inline-four engine block. This mechanical design maximizes air intake flow to helps support rapid and responsive hole-shot acceleration. Coastal boaters can easily push heavily loaded fiberglass vessels through challenging offshore chop.

Yamaha 115HP EFI

This 4-Stroke 115HP engine incorporates an Electronic Fuel Injection system to optimize internal combustion cycles. Continuous digital calibration prevents power loss and helps support instant turnkey starting across varying atmospheric pressures. You achieve outstanding fuel economy during long pelagic fishing trips to distant offshore reefs.

4-Stroke 20-Inch Shaft

The F115LB2 115HP integrates a standard 20-inch shaft explicitly calibrated for high-transom vessel dimensions. This optimal lower unit depth prevents propeller ventilation while maintaining secure mechanical leverage during sharp turns. US boaters can confidently navigate tight coastal flats with predictable handling and superior steering precision.

Outboard 115HP Electronics

The Outboard 115HP seamlessly connects with modern digital helm displays via a certified NMEA 2000 interface. An integrated 35-amp alternator generates consistent electrical output to supply your critical navigation instruments. Serious tournament fishermen can operate multiple sonar screens and livewell pumps simultaneously without draining the starting battery.

Yamaha Factory Warranty

The Yamaha F115LB2 is protected by a comprehensive 3-year limited factory warranty backed by strict Japanese manufacturing standards. This factory protection plan helps support long-term maritime durability and covers critical structural or mechanical defects. Boat owners gain peace of mind knowing their high-performance investment is supported by a global service network.

Premium Vessel Match

The F115LB2 115HP provides the appropriate balance for modern fiberglass and high-performance aluminum hulls. Its lightweight 377 lbs design prevents stern-heavy displacement while maximizing planing speeds on open water. US bay boat owners enjoy superior agility when navigating shallow coastal estuaries or inland lakes.

Engine Care Protocol

This 4-Stroke 115HP requires minimal routine maintenance due to its robust internal components and specialized marine alloys. High-quality sacrificial anodes and the YDC-30 alloy protect the lower unit from harmful galvanic corrosion.Pro Tip:Flush the internal cooling passages with fresh water after every saltwater outing to prevent salt crystallization.