Small in size, but big in performance, the F2.5, single cylinder, four-stroke engine provides an extremely lightweight and portable engine for smaller craft. This versatile and compact unit includes a handy carry handle making moving and installing this engine effortless, while the smart leak-free design allows the engine to be safely and conveniently stored on its front, right or left side. With its new stylish round cowling, improved combustion efficiency and lower emissions output, the F2.5 not only looks great, but delivers Yamaha’s legendary reliability, fuel efficiency and smooth running performance.


Our 72-cc 2.5-hp portable outboard is the smallest motor on our roster, yet, it has some of the biggest news. Completely redesigned, it’s even more portable, easier to store and cleaner burning. It recently achieved a Three-Star rating from the California Air Resources Board (C.A.R.B) for Ultra-Low Emissions and now meets emissions requirements in all 50 states.

  • Available for tiller-handle control with forward-neutral shifting, 360-degree steering and an ergonomic twist-grip throttle
  • Only 37 pounds (15” shaft model)
  • Available in 15” and 20” shaft lengths


Engine Type1 cyl
Bore x Stroke54 x 31.5 mm (2.13 x 1.24 in)
Prop Shaft Horsepower2.5hp at 5500 rpm
Full Throttle RPM Range5250 ~ 5750
Alternator Output at W.O.T.N/A
Compression Ratio8.8:1
Fuel Induction SystemCarb
Weight*17 kg (37 lbs) – 20 kg (40lbs)
Recommended FuelOctane 87
Recommended Engine OilYamalube® 4M (See owner’s manual)
Recommended Fuel FiltrationN/A


Transom Height (mm [inch])S: 432 [17.0]

Dry Weight (kg)S: 17

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