F4

F4 Outboard

Lightweight, compact and economical, Yamaha’s single-cylinder portable F4 has been designed to be ultra-easy to use and transport. Featuring a specially developed four stroke, Overhead Valve (OHV) design, this engine delivers excellent fuel efficiency and smooth running. Attention to detail makes this Yamaha small engine great by delivering a user experience that stands head and shoulders above anything else.

Description

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.

  • Tiller-handle control with forward-neutral-reverse shifting and an ergonomic twist-grip throttle
  • Only 59 pounds (15” shaft model)
  • Available in 15” and 20” shaft lengths
  • Solid 6-amp alternator
  • Engine Type4-Stroke, OHV, 1-cylinder
  • Bore x Stroke (mm) 62 x 46
  • Fuel Tank Capacity (l) 1.1
  • Displacement (cc)139.0
  • Recommended Maximum RPM 4000-5000
  • Fuel Management Carb
  • Ignition CDI
  • Lubrication System Wet sump
  • Alternator Output 12V – 6A with Rectifier Regulator (Optional)
  • Gear Ratio 2.08:1
  • Starter System Manual Choke
  • Operation Method Tiller Handle
  • Trim and Tilt Method Manual Tilt
  • Digital Gauges N/A
  • Command Link Gauges N/A

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