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F4 - F2.5
The Powerful Portables.

Two remarkable engines that have won the hearts of owners around the world because, thanks to Yamaha’s pioneering technology. These capable, reliable, stylish pick-up-and-go 4-stroke outboards are a joy to use and a pleasure to own. Yacht owners love them too, because they make great auxiliaries.

The convenience and portability of these well-balanced engines, with their large, comfortable carry-handles, is a big advantage, but the miserly fuel consumption, simple, user-friendly controls and vibration-free reliability count in their favour too. All this, plus superb handling and manoeuvrability - and knowing they will always start so easily - adds a new dimension to small boat adventures.
- CDI/TCI ignition system for easy starting and ultimate reliability
- Strong tiller handle with twist-grip throttle allows easy and comfortable control
- Side shift selector, simple and convenient to use
- F-N-R gears (F4) • F-N gears + 360º steering (F2.5) make it safe and easy to manoeuvre
- Handy steering friction adjustment for relaxed and confident control
- Strong integral carrying handles for light, comfortable portability



Parts Manual

Service Manual

Owners Manual

What year is my engine?

Manufacturer: YAMAHA Cooling:
Make: F4A Ignition: TCI
Year: Starting: Manual
Engine Type: 4 HP 4-STROKE Exhaust:
Horsepower: 4 Trim: Manual (4, 8, 12, 16 and 20 degrees)
Displacement: 6.83/112(in/cc) Fuel Induction: 1 carb.
Bore/Stroke: 2.32x1.61/59x41(in/mm) Lubrication: Splash
Cylinders: 1 Steering
RPM: 4000-5000    
Weight: 48.5/22(lbs/kg) PRICING These prices are the "Manufacturer Suggested Retail Prices" (MSRP). These are just for comparison.
Gear Ratio: 2.08:1 US: 1.470 - 1.490 dollars
Shaft lenght: (in/mm) UK: 859 - 869 pounds
Gears: F N R Netherlands: euros
    France: euros
    Australia: dollars

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