Yamaha 4 HP Outboard Motors

Yamaha’s smallest Portables, the F4 weigh in at as little as 59 pounds, with streamlined overhead-valve, one-cylinder designs. Their light weights, combined with built-in carrying handles, resting pads and an oil-leak prevention system for on-side storage capability create true portability. Add to that their efficiency, performance and reliability and these pint-sized powerhouses are perfect for all sorts of light duty, like hopping to the cuddy on a tender. Wherever the day takes you, you can take along a little extra power with an F2.5 Yamaha Portable. Our 139-cc 4-hp portable outboard is the smallest motor on our roster, but it still packs a punch. Completely redesigned, it’s even more portable, easier to store and clean burning. Available for tiller-handle control with forward-neutral shifting, 360-degree steering and an ergonomic twist-grip throttle Only 59 pounds (15” shaft model) Available in 15” and 20” shaft lengths Engine Type 1 cyl Displacement 139cc Bore x Stroke 62 x 46mm (2.44 x 1.81in) Prop Shaft Horsepower 4hp at 4500 rpm Full Throttle RPM Range 4000 ~ 5000 Alternator Output at W.O.T. 6 Amp Compression Ratio 8.9:1 Fuel Induction System Carb Weight † 27 kg (59 lbs) - 28 kg (61 lbs) Recommended Fuel Octane 87 Recommended Engine Oil Yamalube® 4M (See owner's manual) Recommended Fuel Filtration N/A C.A.R.B. Rating 3-Star Exhaust Above Propeller Intake 2 Ignition CDI Spark Plug CR6HSB Starting System Manual Lubrication Wet Sump Engine Oil Capacity 0.6L Recommended Cooling Thermostatic Control Ethanol Blend Limit 10% Maximum Gear Ratio 2.08:1 Gear Shift Forward, Neutral, Reverse Shaft Length 15" - 20" Degree of Tilt 69° Degree of Trim -4° through +16° Mounting Centers N/A Steering Steering Angle (maximum) 90° from center, either direction Warranty Limited 3-Year Pleasure, 3-Year Government, 1-Year Commercial