Yamaha Marine Outboard | 50HP | Four Stroke | Long Shaft | Electric Start

Yamaha F 50 HETL - Series MIDRANGE
For those who rely on their quality time.

Nothing beats a day on the water with family and friends. And nothing powers those moments quite like Yamaha’s versatile line of midrange outboards. Ranging in size from the mighty F90 down to the nimble F25, they offer just the right amount of power for a variety of applications. These 2-, 3- and 4-cylinder dynamos are quiet, clean-burning, reliable performers. But that’s not all they have to offer.

Here’s what makes each member of the Yamaha (F 50 HETL) Midrange family unique:

Fuel Economy.
Precision Multi-Point Fuel Injection (except F25) uses individual fuel injectors and a system of on-engine sensors to deliver an optimal fuel/air mixture to each cylinder. F25 models use our PrimeStart™ auto-enrichment system. Both provide easy turnkey starting, smooth acceleration and maximum fuel economy.
Optimum Overall Performance.
Microcomputer Ignition, featured in all Yamaha midranges, adjusts timing to maintain optimal engine performance, economy and power under all operating conditions.
Smart Design.
A Single Overhead Camshaft (SOHC), on the F25 through the F70, provides a compact, lightweight, space-saving design that won an Innovation Award from Motor Boating and Sailing magazine.
Ergonomic Control.
Yamaha’s award-winning, Multi-Function Tiller Handle is available on all F30~F90 midrange models. These handles feature Variable Trolling Speed (VTS™), allowing you to fine-tune your trolling speed in 50-RPM increments with the touch of a button.
Easy Engine Flushing.
A Freshwater Flush Device allows you to flush the engine without running it, for added convenience and long engine life.
Anti-Corrosive Barrier.
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 Yamaha portable four-stroke engines.


This modification of the model offers:

  • Full injection
  • Electric start
  • Remote control
  • Fully hydraulic Trim & Tilt
  • Included in the kit: shtambayn and versatile measuring device
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Max. prop shaft output 36.8 kW / 50 hp
Full throttle operating range 5000~6000 r/min
Idling speed 750 ± 50 r/min
Fuel consumption 17.6 l/h @5500 r/min



Engine type 4-Stroke, 8-Valve, SOHC, In-line 4
Displacement 996 cm³
Bore × Stroke 65.0 × 75.0 mm
Compression ratio 9.5 :1
Starting enrichment Fuel Injection
Fuel induction system Electronic Fuel Injection (EFI)
Fuel tank Portable, 25 ℓ
Lubrication system Wet sump
Engine oil capacity 2.1/1.9 ℓ (with / without oil filter replacement)
Ignition system TCI Micro-computer
Ignition timing ATDC 10.0 ~ BTDC 25.0 deg.
Spark Plug DPR6EB-9
Engine Start Electronic Starter
Alternator 16 A (battery charge: 9 A)
Cooling system Raw-water, thermostatically controlled
Exhaust system Through propeller boss



Steering Remote Control
Steering Angle (maximum) 40° from center, either direction
Mounting Centers  
Trim Control System Power trim and tilt
Trim / Shallow water drive Continuously variable
Degree of Trim -4° through +16°
Degree of Tilt 69°
Gear shift Forward-Neutral-Reverse
Gear ratio 1.85 (24/13)
Gear oil capaciti 0.430 ℓ
Propeller rotation Clockwise
Propeller hub G
Engine transom height (Shaft length) L: 527 mm (20.7 inch)
Boat transom height L: 508 mm
Dry weight 114,0 kg


Additional Info

All our prod­ucts carry a two-year guar­an­tee on any fac­tory de­fects.


We en­cour­age all po­ten­tial  buy­ers to come and view the prod­ucts and dis­cuss the many op­tions avail­able. 


We are open daily and on Sat­ur­days. Please send us an email on sales@ritz­ma­rine.com with any questions you may have.