Setting New Expectations For Power Portable
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GRAY
PORTABLE FOUR STROKES
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 an oil-retention system for leak-free, on-side storage capability, carry handles and resting pads. So whether you’re headed duck hunting with a jon boat or on the way to a lake cottage and your 14-foot aluminum boat, your Yamaha portable’s ready to go.
Owner's Manuals
THE OUTSTANDING, 25 HP PORTABLE
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.
POWER & PERFORMANCE
Efficient Power
The F25, F20 and F15 all feature a two-valve-per-cylinder, single-overhead-camshaft design that provides better breathing and more power.
Optimum Performance
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
Streamlined Intake
An intake silencer and manifold on the F20 and F15 result in more direct airflow, for minimum noise and maximum power.
Responsive Acceleration
An acceleration pump on the F20 and F15 gives the engine the fuel it needs--when it needs it--like during rapid throttle advance. This ensures responsive acceleration
RELIABILITY & DURABILITY
RELIABILITY & DURABILITY
OPTIMAL OPERATION
Convenience & Control
MAX MANEUVERABILITY
A 45-degree steering angle in each direction means great maneuvering potential.
EASY ENGINE FLUSHING
A Freshwater Flush Device allows you to flush the engine without running it, for added convenience and extended engine life.
PORTABILITY AND STORAGE
Incredible light weights, built-in resting pads and carry handles, an easy oil retention system and an optional folding tiller handle, allow for easy carrying and on-side storage without oil leakage or cowling scuffs.
Product Videos
Yamaha Portable
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25 - 15 hp 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.
- Available for remote mechanical or tiller-handle control
- Only 126 pounds (15” shaft model)
- Available in 15” and 20” shaft lengths and in a High-Thrust design (T25)
- Powerful 16-amp alternator
- Variable Trolling RPM Switch (VTS®) is standard on factory-equipped tiller handles, and available with our Multi-Function Tiller Handle, a Command Link® tachometer or dash mounted VTS switch
- Select models - including 15-inch shafts - now feature a shorter, factory-installed tiller with Power Trim & Tilt and a tilt-up feature for ease in small spaces
25 - 15 hp 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.
- Available for remote mechanical or tiller-handle control
- Only 126 pounds (15” shaft model)
- Available in 15” and 20” shaft lengths
- Powerful 16-amp alternator
25 - 15 hp 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.
- Available for tiller-handle control
- Only 111 pounds (15” shaft model)
- Available in 15” and 20” shaft lengths
- Powerful 10-amp alternator
| 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 |
† Weight refers to shortest shaft length, and is measured without motor oil, gearcase oil and propeller (except models 25 hp and under, which include a standard propeller). All Jet model weights include the jet pump assembly (weight estimated).
| 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 |
† Weight refers to shortest shaft length, and is measured without motor oil, gearcase oil and propeller (except models 25 hp and under, which include a standard propeller). All Jet model weights include the jet pump assembly (weight estimated).
| 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 |
† Weight refers to shortest shaft length, and is measured without motor oil, gearcase oil and propeller (except models 25 hp and under, which include a standard propeller). All Jet model weights include the jet pump assembly (weight estimated).
