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Yamaha F50 I-4 1.0L Tiller 20
Yamaha F50 I-4 1.0L Tiller 20

Specs

General Information

Manufacturer
Yamaha
Yamaha
Model
F50 I-4 1.0L Tiller 20
F50 I-4 1.0L Tiller 20
Model Code
NA
NA
Color
Gray
Gray

Electrical

Alternator Output
At W.O.T. - 16 A
At W.O.T. - 16 A

Engine

Engine Type
Inline 4
Inline 4
Ignition
TCI microcomputer
TCI microcomputer
Starting
Electric
Electric
Exhaust
Through propeller
Through propeller

Measurements

Power
50 Horsepower
50 Horsepower
Displacement
1,000 Cubic Centimeter
1,000 Cubic Centimeter
Bore x Stroke
65 x 75 mm (2.56 x 2.95 in.)
65 x 75 mm (2.56 x 2.95 in.)
Shaft Length
20"
20"
Dry Weight
247 lbs
247 lbs

Operational

Steering
Angle (maximum) - 40° from center, either direction
Angle (maximum) - 40° from center, either direction
Fuel Type
Unleaded
Unleaded
Use
Fresh and Salt Water
Fresh and Salt Water
Full Throttle RPM Range
5,000 - 6,000 rpm
5,000 - 6,000 rpm
Fuel Induction
EFI
EFI
Lubrication

Wet sump

Recommended oil - Yamalube® 4M

Engine oil capacity with filter - 2.1 l

Engine oil capacity without filter - 1.9 l

Wet sump

Recommended oil - Yamalube® 4M

Engine oil capacity with filter - 2.1 l

Engine oil capacity without filter - 1.9 l

Cooling
Recommended - Thermostatic control
Recommended - Thermostatic control
Gear Ratio
1.85:1
1.85:1
Gear Shift
Forward, Neutral, Reverse
Forward, Neutral, Reverse
Trim System

Degree of trim - -4° through +16°

Degree of tilt - 69°

Degree of trim - -4° through +16°

Degree of tilt - 69°

Other

Warranty
Limited 3-year pleasure, 3-year government, 1-year commercial
Limited 3-year pleasure, 3-year government, 1-year commercial

Features

Convenience & Control

  • CONTROL AND COMFORT: Our optional, award-winning Multi-Function Tiller handle features a Variable Trolling RPM Switch (VTS®). It allows for precision trolling speed adjustments in 50-RPM increments. Compatible with all Midrange models.
  • EASY ENGINE FLUSHING: A Freshwater Flush Device allows you to flush the engine without running it, for added convenience and extended engine life.​
  • GAUGE COMPATIBILITY: Optional Command Link® gauges provide real-time outboard performance, boat systems and environmental data at your fingertips. Streamlined displays are designed to withstand the elements and are available in square or round style for single- or multi-engine applications.

Features

  • PROP SHAFT HORSEPOWER: 50 hp at 5,500 rpm
  • COMPRESSION RATIO: 9.5:1
  • RECOMMENDED FUEL: Octane 87
  • RECOMMENDED FUEL FILTRATION: Yamaha 10-micron fuel / Water separating filter (external)
  • C.A.R.B. RATING: 3-Star
  • INTAKE: 8
  • SPARK PLUG: DPR6EB-9
  • ETHANOL BLEND LIMIT: 10% maximum
  • Compatible with Multi-Function Tiller
  • Compatible with Command Link® and Analog Gauges

Power & Performance

  • SINGLE OVERHEAD CAMSHAFT: A Single Overhead Camshaft (SOHC) on the F50 provides a compact, lightweight, space-saving design.
  • FUEL ECONOMY: Precision Multi-Point Electronic Fuel Injection delivers the exact amount of fuel needed for optimum performance and efficiency. Yamaha’s EFI optimizes fuel atomization further enhancing fuel economy.
  • POWERFUL HOLE SHOT: A Composite Intake Manifold features long tube intake tracks, tuned to increase airflow, which boost 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.
  • OPTIMUM PERFORMANCE: A TCI microcomputer ignition adjusts timing to maintain optimal engine performance, economy and power under all operating conditions.
  • PRECISE THROTTLE CONTROL: All air entering the engine block is routed through a single throttle valve, to ensure the precise amount of air necessary for optimum power and fuel efficiency. It then enters each cylinder through individual long intake tracks, which are 'pulse tuned' to provide air at the precise volume and timing for maximum density and power.

Reliability & Durability

  • CORROSION PROTECTION: Combined with our proprietary alloy (YDC-30), our exclusive Phaze Five™ electro-deposited, anti-corrosive paint system provides a tough, five-layer barrier against corrosion. This protection is standard on all the Yamaha Midrange 70-, 60- and 50-horsepower four strokes.
  • ENGINE WARNING SYSTEM: This system protects the outboard with a range of functions including: overheat protection and 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.
  • WET SUMP: The F50 use a pressurized oil delivery system and incorporate a compact and durable oil pump to keep all of the moving parts of their SOHC systems lubricated and running smoothly for maximum reliability.
  • MAGNETIC DRAIN PLUG: Located in the lower unit to remove metal particles from the gear oil and prevent gearcase damage.

Convenience & Control

  • CONTROL AND COMFORT: Our optional, award-winning Multi-Function Tiller handle features a Variable Trolling RPM Switch (VTS®). It allows for precision trolling speed adjustments in 50-RPM increments. Compatible with all Midrange models.
  • EASY ENGINE FLUSHING: A Freshwater Flush Device allows you to flush the engine without running it, for added convenience and extended engine life.​
  • GAUGE COMPATIBILITY: Optional Command Link® gauges provide real-time outboard performance, boat systems and environmental data at your fingertips. Streamlined displays are designed to withstand the elements and are available in square or round style for single- or multi-engine applications.

Features

  • PROP SHAFT HORSEPOWER: 50 hp at 5,500 rpm
  • COMPRESSION RATIO: 9.5:1
  • RECOMMENDED FUEL: Octane 87
  • RECOMMENDED FUEL FILTRATION: Yamaha 10-micron fuel / Water separating filter (external)
  • C.A.R.B. RATING: 3-Star
  • INTAKE: 8
  • SPARK PLUG: DPR6EB-9
  • ETHANOL BLEND LIMIT: 10% maximum
  • Compatible with Multi-Function Tiller
  • Compatible with Command Link® and Analog Gauges

Power & Performance

  • SINGLE OVERHEAD CAMSHAFT: A Single Overhead Camshaft (SOHC) on the F50 provides a compact, lightweight, space-saving design.
  • FUEL ECONOMY: Precision Multi-Point Electronic Fuel Injection delivers the exact amount of fuel needed for optimum performance and efficiency. Yamaha’s EFI optimizes fuel atomization further enhancing fuel economy.
  • POWERFUL HOLE SHOT: A Composite Intake Manifold features long tube intake tracks, tuned to increase airflow, which boost 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.
  • OPTIMUM PERFORMANCE: A TCI microcomputer ignition adjusts timing to maintain optimal engine performance, economy and power under all operating conditions.
  • PRECISE THROTTLE CONTROL: All air entering the engine block is routed through a single throttle valve, to ensure the precise amount of air necessary for optimum power and fuel efficiency. It then enters each cylinder through individual long intake tracks, which are 'pulse tuned' to provide air at the precise volume and timing for maximum density and power.

Reliability & Durability

  • CORROSION PROTECTION: Combined with our proprietary alloy (YDC-30), our exclusive Phaze Five™ electro-deposited, anti-corrosive paint system provides a tough, five-layer barrier against corrosion. This protection is standard on all the Yamaha Midrange 70-, 60- and 50-horsepower four strokes.
  • ENGINE WARNING SYSTEM: This system protects the outboard with a range of functions including: overheat protection and 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.
  • WET SUMP: The F50 use a pressurized oil delivery system and incorporate a compact and durable oil pump to keep all of the moving parts of their SOHC systems lubricated and running smoothly for maximum reliability.
  • MAGNETIC DRAIN PLUG: Located in the lower unit to remove metal particles from the gear oil and prevent gearcase damage.