Buy Yamaha F115LB 115 HP Outboard Motor Online
The Yamaha F115LB 115 HP Outboard Motor is a dependable four-stroke engine designed for boaters who want responsive power, efficient operation, and smooth everyday performance. Its 1,832cc, inline four-cylinder DOHC design uses 16 valves and electronic fuel injection to deliver precise fuel control, reliable starting, and strong acceleration across a wide operating range.
Producing 115 horsepower at 5,500 rpm, the F115LB is well suited to fishing boats, pontoons, bay boats, and recreational craft requiring yamaha 90 hp outboard balanced midrange performance. The 20-inch shaft supports common transom applications, while remote mechanical controls yamaha 115 provide familiar, straightforward handling. Electric starting makes operation yamaha 115 outboard price convenient, and power trim and tilt help the driver adjust the engine angle for improved acceleration, cruising efficiency, shallow-water access, and trailering.
A 35-amp alternator output at wide-open throttle helps support onboard electronics and accessories during longer trips. The engine is designed to run on regular 87-octane gasoline and uses Yamaha-recommended Yamalube 4M oil for proper 115 horsepower outboard protection. At approximately 377 pounds, it combines substantial output with a manageable installation weight. The Yamaha F115LB 115 HP Outboard Motor is an excellent choice for owners seeking yamaha 115 4 stroke price proven engineering, dependable performance, practical controls, and versatile power for both work and recreation in varied marine conditions and environments.
Yamaha F115LB 115 HP Outboard Motor Specifications
| Specification | Details |
|---|---|
| Model | Yamaha F115LB |
| Engine Type | Inline four-cylinder, DOHC |
| Valve Configuration | 16 valves; four valves per cylinder |
| Displacement | 1.8 L / 1,832cc |
| Prop-Shaft Horsepower | 115 HP at 5,500 rpm |
| Full-Throttle RPM Range | 5,300–6,300 rpm |
| Fuel Induction | Electronic Fuel Injection (EFI) |
| Starting System | Electric start |
| Control Type | Remote mechanical |
| Shaft Length | 20 inches |
| Dry Weight | Approximately 377 lb |
| Alternator Output | 35 amps at wide-open throttle |
| Compression Ratio | 10.0:1 |
| Bore × Stroke | 81 × 88.9 mm / 3.19 × 3.5 in |
| Gear Ratio | 2.15:1 |
| Gear Shift | Forward, Neutral and Reverse |
| Ignition System | TCI microcomputer |
| Lubrication | Wet-sump system |
| Engine Oil Capacity | 3.2/3.0 L |
| Recommended Oil | Yamalube 4M |
| Recommended Fuel | 87-octane gasoline |
| Ethanol Limit | Maximum 10% ethanol blend |
| Cooling System | Thermostatically controlled |
| Exhaust System | Through-propeller exhaust |
| Trim and Tilt | Power trim and tilt |
| Tilt Range | 70 degrees |
| Trim Range | -4° to +16° |
| Recommended Filtration | Yamaha external 10-micron fuel/water-separating filter |
| Propeller | Sold separately |
| Standard Color | Yamaha Gray |
The F115LB-specific configuration includes a 20-inch shaft, remote mechanical controls, electric starting and power trim and tilt. Yamaha’s official specifications confirm its engine dimensions, operating range, electrical output, fuel requirements and drivetrain details.
Key Benefits
Strong, Responsive Performance
The 1.8-liter inline-four engine produces 115 horsepower at the propeller. Its double-overhead-camshaft design and four valves per cylinder improve airflow and combustion, supporting responsive acceleration, torque and efficient operation.
Precise Electronic Fuel Injection
EFI accurately controls fuel delivery for dependable starting, smooth throttle response and consistent performance across changing engine speeds and boating conditions.
Excellent Power-to-Weight Ratio
At approximately 377 pounds, the Yamaha F115LB delivers substantial midrange power without adding unnecessary weight to the transom. This makes it suitable for many fishing, deck, bay and recreational boats.
Powerful Charging Capacity
The 35-amp alternator supplies dependable charging power for batteries, navigation equipment, fish finders, lighting and other onboard accessories. Yamaha states that the F115 provides more than 45% additional charging power compared with its previous design.
Convenient Power Trim and Tilt
Power trim and tilt lets the operator adjust the engine angle from the controls. Proper adjustment can improve acceleration, cruising attitude and handling while simplifying shallow-water operation and trailering.
Precise Trolling Control
When equipped with a compatible Yamaha control or gauge, Variable Trolling RPM allows engine-speed adjustments in 50-rpm increments from 650 to 900 rpm, helping anglers maintain a more precise trolling speed.
Dependable Ignition
The TCI microcomputer ignition automatically adjusts ignition timing to support dependable power, economy and engine performance under different operating conditions.
Corrosion Protection
Yamaha’s alloy construction, multi-layer paint process, stainless-steel components and sacrificial anodes help protect critical parts from corrosion in demanding marine environments.
Easier Routine Maintenance
A freshwater flushing device allows the cooling passages to be flushed without starting the engine, helping simplify maintenance and support long-term durability.
Flexible Propeller Selection
Because the propeller is sold separately, owners can choose an appropriate propeller diameter, pitch and material based on their boat’s hull, weight, load and intended use.
What boats are suitable for the Yamaha F115LB 115 HP Outboard Motor?
The Yamaha F115LB 115 HP Outboard Motor is suitable for many fishing boats, pontoons, bay boats, center consoles, and recreational vessels compatible with a 20-inch shaft and 115-horsepower engine. Always confirm the boat manufacturer’s horsepower and transom requirements before installation.
Does the Yamaha F115LB 115 HP Outboard Motor include a propeller?
No. The propeller for the Yamaha F115LB 115 HP Outboard Motor is ordered separately. The correct propeller size and pitch depend on the boat’s weight, hull design, intended use, and expected performance. A Yamaha dealer can recommend an appropriate propeller.
