2018 Yamaha F50 Midrange Mechanical 20 F50LB Outboard Motor

Description

The F50LB is built around Yamaha’s 996cc single-overhead-camshaft four-cylinder powerhead — a 1.0-litre, eight-valve, long-stroke design that delivers ultra-smooth, useable power with low noise and vibration levels . The inline four-cylinder configuration provides exceptional refinement compared to three-cylinder competitors.

The Precision Multi-Point Electronic Fuel Injection system delivers the exact amount of fuel needed for optimum performance and efficiency, with Yamaha’s EFI optimizing fuel atomization further enhancing fuel economy . The TCI microcomputer ignition adjusts timing to maintain optimal engine performance, economy, and power under all operating conditions .

The composite intake manifold features long tube intake tracks, tuned to increase airflow, which boosts low-end and midrange torque. This means a more powerful hole shot and increased acceleration. Even with all this responsive power, an air silencer box and surge tank reduce air intake noise and air turbulence for smooth, quiet operation .

The Variable Trolling RPM Switch (VTS®) — available with the optional Multi-Function Tiller handle, Command Link® Tachometer, or helm-mounted remote — allows precision trolling speed adjustments from 650 to 900 RPM in 50-RPM increments . For anglers who fish seriously, this level of low-speed control is invaluable.

The Freshwater Flush Device allows you to flush the engine without running it, for added convenience and extended engine life . The Power Trim and Tilt system provides a trim range of -4° through +16° with a 69° tilt range, bringing the bow of the boat up for better hole shot, top speed, and a smoother ride .

Yamaha’s Phaze Five™ electro-deposited anti-corrosive paint system, combined with their proprietary YDC-30 alloy, provides a tough, five-layer barrier against corrosion — standard on all Yamaha Midrange 70-, 60-, and 50-horsepower four strokes . The Engine Warning System protects the outboard with overheat protection, low-oil-pressure warning (automatically reducing maximum RPM to 2000), over-rev protection, water-in-fuel detection, start-in-gear protection, and shift-in prevention at open throttle .

The 50 HP midrange outboard segment is competitive, with strong offerings from Mercury 50 EFI, Suzuki DF50A, and Honda BF50. Here’s how the F50LB compares on the specifications that matter:

Independent testing under bailiff control by Hors-Bord Magazine confirmed that the Mercury 50 EFI developed the highest actual power output in its class, though the Yamaha F50 remains the most popular choice among fishermen and professionals for its legendary reliability and excellent resale value . The F50LB’s 996cc displacement matches the Mercury 50 and exceeds the Honda BF50 by nearly 190cc .

Independent performance testing on a G3 Boats Outfitter V167 T with the F50LB provides real-world fuel economy and speed data :

0-20 MPH acceleration: 4.60 seconds . Peak fuel efficiency occurs around 3500 RPM, delivering 9.24 MPG.

Additional testing on an Alumacraft MV1756SC showed 0-20 MPH in 5.36 seconds with peak efficiency of 11.33 MPG at 1000 RPM and 8.92 MPG at 4500 RPM .

The F50LB is well-suited to a wide range of American boating applications:

• Aluminum fishing boats — the 20″ shaft and remote controls make it ideal for serious anglers

• Center console skiffs — reliable power for inshore fishing

• Utility boats — dependable performance for work and play

• Small pontoons — the 996cc powerhead handles light pontoon duty

The engine features a single throttle valve that ensures the precise amount of air necessary for optimum power and fuel efficiency, routing air through individual long intake tracks that are “pulse tuned” to provide air at the precise volume and timing for maximum density and power . The labyrinth exhaust system reduces engine noise at low RPM and idle, with a water-sealed outer wall around the exhaust muffler for whisper-quiet operation .

The magnetic drain plug located in the lower unit removes metal particles from the gear oil and prevents gearcase damage . The wet sump lubrication system uses a pressurized oil delivery system with a compact and durable oil pump to keep all moving parts lubricated and running smoothly .

All motors ship from our San Francisco, CA warehouse with fast nationwide shipping. California residents pay applicable sales tax; out-of-state buyers receive straightforward delivery to their doorstep.

• 2018 Yamaha F50LB outboard motor (20″ shaft)

• Remote control box and harness

• Power Trim & Tilt system

• Fuel tank and quick-connect fuel line

• Aluminum propeller

• Tool kit

• Owner’s manual

• Yamaha 3-Year Manufacturer Warranty

Complete your installation with these compatible components and services:

• Yamaha outboard motor propellers — pitch options for optimal performance

• Yamalube 4M engine oil — the recommended oil for your F50

• Yamaha 10-micron fuel/water separating filter — protects your EFI system

• Zinc anode kit for Yamaha F50LB — protect against saltwater corrosion

• Yamaha outboard motor flusher — essential for post-saltwater flushing

• Boatworld foldable outboard engine trolley — safe storage and transport

• Outboard motor service kit — impeller, spark plugs (DPR6EB-9), and fuel filters

• Boatworld heavy duty outboard lock — security for your investment

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SKU: YAM-F50LB-2018-20
MPN: F50LB
Brand: Yamaha Marine
Category: Outboard Motors > Midrange (30–90 HP)