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.
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
| 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?
Outboard Outfitters 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.