High-Power Portable

Yamaha’s high-powered portables are redefining the expectations for portable horsepower, from the F15 all the way to the NMMA® Innovation Award-winning F25. Their single-overhead-camshaft, two-cylinder designs create power to weight that’s not only eye-opening—but in the case of the F25, it’s also class-leading and category jumping. In fact, the Yamaha’s 25 hp is the lightest 25 on the water—two stroke or four stroke. Like its F15 and F20 siblings, the F25 has signature portable advantages like carry handles, an oil-retention system for leak-free, on-side storage and more. Now, the F25 is also available in new pearlescent white and matte brown.* So, whether you’re duck hunting with a jon boat or headed to a lake cottage with your 14-foot aluminum boat, your Yamaha portable’s ready to go. *New color options available in select models and subject to availability.
The F25, F20 and F15 all feature a two-valve-per-cylinder, single-overhead-camshaft design that provides better breathing and more power.
An optimally balanced crankshaft and labyrinth exhaust deliver smooth power, while Microcomputer Ignition adjusts timing to maintain maximum engine performance, economy and power under all conditions
An intake silencer and manifold on the F20 and F15 result in more direct airflow, for minimum noise and maximum power.

Norfolk Marine OUTBOARDS

THE OUTSTANDING, HIGH POWER PORTABLES

Yamaha’s F25 is still the lightest 25-horsepower outboard on the water—two stroke or four stroke. Its portable design and class-leading power-to-weight mean 25 horses can boldly go where they’ve never gone before. Jons. 14-foot aluminum fishing boats. The bed of your truck.

Norfolk Marine OUTBOARDS

High-Power Portable Specs

  • 25 HP

    Our 432-cc 25-hp portable outboard features a streamlined, portable design and class-leading power-to-weight. While its 25 percent lighter than its previous design, it still packs exciting features like battery-less EFI. Pull-start models can now take advantage of this feature, plus the system is designed with an automatic decompression device to require even less effort for manual starting.

    Engine Type 2 cyl
    Displacement 432cc
    Bore x Stroke 65 x 65.1mm / (2.56 x 2.56 in)
    Prop Shaft Horsepower 25 hp at 5500 rpm
    Full Throttle RPM Range 5000 – 6000
    Alternator Output at W.O.T. 16 amp
    Compression Ratio 9.3:1
    Fuel Induction System EFI
    Weight † 57kg (126 lbs) – 65kg (143 lbs)
    Recommended Fuel Octane 87
    Recommended Engine Oil Yamalube® 4M (See owner’s manual)
    Recommended Fuel Filtration Yamaha 10-Micron Fuel/Water Separating Filter (external)
    C.A.R.B. Rating 2-Star
    Exhaust Through Propeller
    Intake 4
    Ignition CDI Microcomputer
    Spark Plug DPR6EB-9
    Starting System Electric & Manual
    Lubrication Wet Sump
    Engine Oil Capacity 1.1L/1.0L
    Recommended Cooling Thermostatic Control
    Ethanol Blend Limit 10% Maximum
    Gear Ratio 2.00:1
    Gear Shift Forward, Neutral, Reverse
    Shaft Length 15″ – 20″
    Degree of Tilt 62° – 63°
    Degree of Trim -3° through +16°
    Mounting Centers N/A
    Steering
    Steering Angle (maximum) 45° from center, either direction
    Warranty Limited 3-year Pleasure, 3-year Government, 1-Year Commercial
  • 20 HP

    Our 432-cc all-new 20-hp portable outboard-built on the same award winning platform as the F25 and sharing its SOHC in-line design and streamlined intake manifold, delivers solid power. Not only that, but it’s one of the most fuel efficient in its class. At just 126 pounds, it’s suitable for lightweight craft such as aluminum fishing boats, tenders and inflatables.

    Engine Type 2 cyl
    Displacement 432 cc
    Bore x Stroke 65 x 65.1mm (2.554 x 2.558 in)
    Prop Shaft Horsepower 20 hp @ 5500 rpm
    Full Throttle RPM Range 5000 ~ 6000 rpm
    Alternator Output at W.O.T. 16 Amp
    Compression Ratio 9.3:1
    Fuel Induction System EFI
    Weight † 57 kg (126 lbs) – 66 kg (146 lbs)
    Recommended Fuel Octane 87
    Recommended Engine Oil Yamalube® 4M (See owner’s manual)
    Recommended Fuel Filtration Yamaha 10-Micron Fuel/Water Separating Filter (external)
    C.A.R.B. Rating 2-Star
    Exhaust Through Propeller
    Intake 4
    Ignition CDI
    Spark Plug DPR6EB-9
    Starting System Electric & Manual
    Lubrication Wet Sump
    Engine Oil Capacity 1.1L/1.0L
    Recommended Cooling Thermostatic Control
    Ethanol Blend Limit 10% Maximum
    Gear Ratio 2.00:1
    Gear Shift Forward, Neutral, Reverse
    Shaft Length 15″ – 20″
    Degree of Tilt 62°- 63°
    Degree of Trim -3° through +16°
    Mounting Centers N/A
    Steering
    Steering Angle (maximum) 45° from center, either direction
    Warranty Limited 3-Year Pleasure, 3-Year Government, 1-Year Commercial
  • 15 HP

    Our 362-cc 15-hp portable features a SOHC in-line, two-cylinder design.  Its single carburetor and CDI Microcomputer Ignition System make it one of the most fuel-efficient in its class. At just 111 pounds, it’s suitable for lightweight craft such as aluminum fishing boats, tenders and inflatables.

    Engine Type 2 cyl
    Displacement 362 cc
    Bore x Stroke 63 x 58.1mm (2.48 x 2.29 in)
    Prop Shaft Horsepower 15 hp @ 5500 rpm
    Full Throttle RPM Range 5000 ~ 6000 rpm
    Alternator Output at W.O.T. 10 Amp
    Compression Ratio 9.3:1
    Fuel Induction System Carb
    Weight † 50kg (111 lbs) – 59kg (132 lbs)
    Recommended Fuel Octane 87
    Recommended Engine Oil Yamalube® 4M (See owner’s manual)
    Recommended Fuel Filtration Yamaha 10-Micron Fuel/Water Separating Filter (external)
    C.A.R.B. Rating 3-Star
    Exhaust Through Propeller
    Intake 4
    Ignition CDI
    Spark Plug DPR6EB-9
    Starting System Electric & Manual
    Lubrication Wet Sump
    Engine Oil Capacity 1.8L/1.6L
    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 67°- 71°
    Degree of Trim -4° through +16°
    Mounting Centers N/A
    Steering
    Steering Angle (maximum) 45° from center, either direction
    Warranty Limited 3-Year Pleasure, 3-Year Government, 1-Year Commercial

Interested In A High-Power Portable?

Norfolk Marine is your premier destination for Yamaha Outboard Engines. Discover the power, reliability, and innovation of Yamaha’s world-renowned marine engines right here. Whether you’re a seasoned boater or a newcomer to the water, our expert team is dedicated to helping you find the perfect Yamaha Outboard Engine to suit your needs.

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