Yamaha Outboards 115HP | F115LB

Yamaha F115LB 115 HP Four-Stroke Outboard: Powerful & Reliable Standard Rotation

The Yamaha Outboards 115HP | F115LB .

Are you searching for a robust and efficient outboard for your mid-sized boat?

Perhaps you need an engine that blends significant power with Yamaha’s renowned four-stroke technology. Specifically, do you require 115 horsepower with a standard (right-hand) propeller and a 20-inch shaft?

This is ideal for a wide range of single-engine applications. The Yamaha F115LB 115 HP Four-Stroke Outboard Motor is precisely engineered to meet these common boating needs.

Indeed, the F115LB is a cornerstone of Yamaha’s popular 115 HP lineup. It delivers impressive power and fuel efficiency. Crucially, it features standard (right-hand, clockwise) propeller rotation. This makes it perfect for most single-engine setups.

Furthermore, this model comes with a 20-inch long shaft. This ensures optimal propeller depth for various hulls, including many bass boats, bay boats, and general-purpose runabouts. In addition, a smooth electric start system provides effortless, dependable ignition. Beyond that, Power Trim & Tilt allows quick adjustments for performance and navigating varying depths.

Moreover, the F115LB is configured for remote mechanical control. This ensures precise command from the helm. Crucially, it integrates advanced Electronic Fuel Injection (EFI) for efficient operation. It also includes Variable Trolling RPM Control (VTS) for anglers. Ultimately, the F115LB offers powerful, quiet, and responsive performance. This makes it a leading choice for boaters seeking a versatile and reliable 115 HP outboard.

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Deciphering the F115LB Model Code

The “F115LB” designation provides crucial information about this Yamaha outboard.

The “F” for Four-Stroke Engine

First, the “F” indicates a Four-Stroke engine. This means the engine operates on a cleaner, more fuel-efficient four-stroke cycle, unlike two-stroke engines.

The “115” for Horsepower

Next, the “115” simply denotes the 115 horsepower rating at the prop shaft.

The “L” for Long Shaft

Furthermore, the “L” signifies a Long Shaft (20 inches, or approximately 516 mm). This shaft length is standard for many boats. It ensures the propeller is adequately submerged for optimal thrust and performance.

The “B” for Mechanical Remote Control

Finally, the “B” in F115LB indicates that the engine is configured for Remote Mechanical Control. This means it operates from a helm station. It uses traditional mechanical throttle and shift cables.

Therefore, the F115LB is a standard rotation, four-stroke, 115 horsepower outboard with a 20-inch long shaft. It is designed for remote mechanical control and ideally suited for single-engine applications.

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Why the Yamaha F115LB Excels: Key Advantages

The Yamaha F115LB stands out for boaters. It prioritizes balanced power, efficiency, and advanced features in a lightweight package. This makes it ideal for common boating applications.

Powerful 1.8L DOHC Engine

Primarily, the F115LB uses a robust 1.8-liter (1832cc) in-line four-cylinder, 16-valve, DOHC (Double Overhead Camshaft) four-stroke engine. This advanced design provides superior volumetric efficiency. It ensures strong low-end torque and impressive acceleration across the RPM range. Consequently, the DOHC setup, with four valves per cylinder, allows for excellent breathing. This translates directly into better combustion and overall performance.

Incredibly Lightweight Design

Despite its power and features, the F115LB is remarkably lightweight. It weighs about 171 kg (377 lbs). This makes it one of the lightest 115 HP four-stroke outboards with a long shaft. As a result, it enhances boat performance, allows for faster planing, and improves handling. This is especially beneficial for vessels sensitive to transom weight.

Electronic Fuel Injection (EFI) for Precision

A core feature is its Multi-Point Electronic Fuel Injection (EFI) system. This precise system, controlled by an Engine Control Module (ECM), accurately meters fuel. Consequently, you get dependable “first-time, every-time” starts, both hot and cold. Moreover, it ensures superior fuel efficiency, smoother acceleration, and excellent throttle response across the entire RPM range.

Effortless Electric Start & Power Trim & Tilt

The electric start system offers unmatched convenience. Simply turn a key, and the engine comes to life. This eliminates manual pull-starting. Additionally, the Power Trim & Tilt system allows for instant, push-button adjustments of the engine angle. This optimizes boat performance, helps navigate shallow water, and simplifies trailering. A built-in tilt stop lever also helps prevent accidental damage.

Precise Remote Control with Digital Compatibility

The F115LB is designed for remote mechanical control from a helm station. This setup provides precise and comfortable control over steering, throttle, and gear shifting. Thus, it’s ideal for boats with steering consoles. Furthermore, it’s compatible with Yamaha’s optional Digital Network Gauges (e.g., Command Link®). These gauges provide real-time engine data, fuel management, and NMEA2000 compatibility, enhancing control and efficiency.

Smooth, Quiet, & Fuel-Efficient Operation

The F115LB’s 1.8-liter four-cylinder DOHC engine ensures remarkably quiet, smooth, and fuel-efficient operation. It also produces ultra-low emissions. This unit holds a CARB 3-Star Rating, signifying its environmentally responsible performance. In addition, features like its offset crankshaft, single bore throttle body, improved engine rigidity, and Labyrinth Exhaust System contribute to minimal noise and vibration.

High-Output Alternator

Significantly, the F115LB features a powerful 35-amp alternator output (12V). This provides ample power for all your onboard electronics. It also reliably charges your battery. Even at idle, the alternator produces strong, stable output (up to 27 amps at 1000 RPM).

Legendary Yamaha Durability

Like all Yamaha outboards, the F115LB is built for durability. It features robust materials and superior corrosion protection. This includes Yamaha’s proprietary YDC-30 aluminum alloy. It also has a 5-stage Phaze Five™ anti-corrosive paint system, multiple sacrificial anodes, and high-quality stainless steel components. All these elements ensure longevity in harsh marine environments. Moreover, a freshwater flushing system allows for easy rinsing, further extending engine life.

Variable Trolling RPM Control (VTS®)

The F115LB also offers Variable Trolling RPM Control (VTS®). This feature lets you precisely adjust trolling speeds in 50-RPM increments (from 550 to 1000 RPM). This is done via an optional Digital Network Tachometer or a remote VTS switch. This is invaluable for anglers who need to fine-tune lure presentation.

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Core Features of Your Yamaha F115LB 115 HP Four-Stroke Outboard

Here’s a concise breakdown of the key features that define the Yamaha F115LB:

Engine & Performance

• 115 Horsepower (Prop Shaft): Strong power for performance.
• 1.8L Four-Cylinder DOHC Engine: Advanced design for robust torque and efficiency.
• Electronic Fuel Injection (EFI): Reliable starts, fuel efficiency, and responsive power.
• Variable Trolling RPM Control (VTS®): Precision trolling from 550-1000 RPM.
• Prime Start™ System: Guarantees instant cold starts.
• Offset Crankshaft: Reduces internal friction for enhanced efficiency.

Starting & Control

• Electric Start: Effortless engine ignition.
• Remote Mechanical Control: Precise helm control of steering, throttle, and shifting.
• Power Trim & Tilt: Easy adjustment for optimal boat performance and shallow water navigation.

Design & Charging

• Standard Rotation (Right-Hand): Ideal for single-engine applications.
• 20-inch (Long) Shaft: Suits many common boat transom heights.
• Lightweight (Approx. 171 kg / 377 lbs): Enhances boat handling and fuel efficiency.
• High-Output 35-Amp Alternator: Provides ample power for electronics and battery charging.

Durability & Environment

• Legendary Yamaha Reliability: Built for long-term durability in marine environments.
• Advanced Corrosion Protection: Multi-layer paint, alloys, and anodes resist saltwater.
• CARB 3-Star Rating: Ensures ultra-low emissions.
• Watertight Cowling: Protects internal components from water intrusion.

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Ideal Applications for Your Yamaha F115LB Outboard

The Yamaha F115LB is a versatile outboard, perfect for a wide range of single-engine boats.

Mid-Sized Runabouts and Sport Boats

This outboard is an excellent choice for pleasure boats and sport boats. It provides ample power for cruising, tubing, and watersports.

Bass Boats and Bay Boats

For many bass boats and smaller bay boats, the F115LB offers an ideal balance of power, weight, and efficiency for various fishing conditions.

Pontoon Boats

Many pontoon boats with a 20-inch transom are perfectly powered by the F115LB. It provides smooth and quiet operation for leisure on the water.

Aluminum Fishing Boats and Multi-Species Boats

For performance-oriented aluminum fishing boats and multi-species boats, the F115LB delivers improved speed, responsiveness, and fuel economy.

Repower Projects

Crucially, the F115LB is a popular choice for repowering older boats. Its lightweight design and standard mounting pattern make it a straightforward upgrade for many vessels.

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Yamaha’s Unwavering Commitment to Quality

Choosing a Yamaha F115LB means more than just buying an outboard motor. You are investing in a meticulously engineered piece of marine equipment. It’s designed for impressive power, class-leading light weight, effortless electric start, and precise remote control. Furthermore, it offers long-term reliability and exceptional performance for a wide range of boating adventures.

Yamaha’s decades of innovation and craftsmanship are evident in every aspect of the F115LB. This ranges from its smooth, quiet four-cylinder operation to its outstanding fuel economy and renowned durability. Ultimately, the F115LB embodies Yamaha’s promise. It delivers a superior boating experience. It ensures peace of mind and countless hours of high-performance enjoyment on the water.

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Technical Specifications (Approximate – Always Verify with Official Yamaha Resources for the specific model year)

• Model Name: F115LB
• Engine Type: 4-Stroke, DOHC, In-line 4-Cylinder, 16-Valve
• Horsepower (Prop Shaft): 115 HP @ 5500 RPM
• Displacement: 1832 cc (1.8L / 111.8 ci)
• Bore x Stroke: 81.0 mm x 88.9 mm (3.19 x 3.50 in.)
• Full Throttle RPM Range: 5300 – 6300 RPM
• Fuel Induction System: Electronic Fuel Injection (EFI)
• Starting System: Electric with Prime Start™
• Ignition System: TCI Microcomputer
• Alternator Output: 35 Amps (12V) with Rectifier Regulator (27A at 1000 RPM)
• Lubrication System: Wet Sump (pressurized oil delivery system)
• Engine Oil Capacity: 3.2 L (3.0L without filter, 3.2L with filter)
• Gear Ratio: 2.15:1 (28:13)
• Gear Shift: F-N-R (Forward, Neutral, Reverse)
• Shaft Length: 20 inches (Long Shaft) – approx. 516 mm (20.3 in) transom length
• Trim & Tilt System: Power Trim & Tilt
• Recommended Fuel: Regular Unleaded (Minimum Pump Octane 87)
• Recommended Fuel Filtration: Yamaha 10-Micron Fuel/Water Separating Filter (external, recommended)
• C.A.R.B. Rating: 3-Star (Ultra Low Emission)
• Exhaust: Through Propeller
• Weight (Dry): Approximately 171 kg (377 lbs)
• Steering: Remote Mechanical Control (35° from center, either direction)
• Propeller Rotation: Right-Hand (Standard Rotation)
• Standard Features: Electric Start, Power Trim & Tilt, EFI, Freshwater Flushing System, Variable Trolling RPM Switch (VTS®) compatibility, Robust Corrosion Protection (YDC-30 alloy, 5-stage paint process, extra-large anodes), Offset Crankshaft, Watertight Cowling with Intake Air Drain System, Compatible with Yamaha Command Link® Digital Gauges (optional), NMEA2000 compatibility.
• Typical Color: Yamaha Gray

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Are you ready to power your boat with a versatile, efficient, and technologically advanced 115 HP outboard?

This model offers electric start, Power Trim & Tilt, and precise remote control. Invest in the Yamaha F115LB 115 HP Four-Stroke Outboard Motor today. Experience reliable performance and quiet operation. Enjoy the peace of mind that comes with Yamaha’s trusted quality. Ultimately, make your time on the water even more enjoyable.