Yamaha Outboards Boats | 2018 Yamaha Outboards 25 - 2.5 hp Portable F4
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2018 Yamaha Outboards 25 - 2.5 hp Portable F4

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25 - 2.5 hp Portable F4

Our 139-cc 4-hp portable outboard mirrors our OHV F6, with a couple less horses. It features the same ergonomic, easy-grip starter handle with a built-in decompression device for effortless starts. The F4 also features a built-in fuel tank with the option of switchable access to an additional external tank for amazing extended range. There's no stopping this little brute.

Specifications

Engine Specs
  • Engine Type : 1 cyl
  • Displacement : 139cc
  • Bore x Stroke : 62 x 46mm (2.44 x 1.81in)
  • Prop Shaft Horsepower : 4hp at 4500 rpm
  • Compression Ratio : 8.9:1
  • RPM Range : 4000 ~ 5000
  • Fuel Induction System : Carb
  • Alternator Output @ W.O.T. : 6 Amp
  • Recommended Engine Oil : Yamalube® 4M (See owner's manual)
  • Recommended Fuel : Octane 87
  • Weight : 27 kg (59 lbs) - 28 kg (61 lbs)
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