Yamaha 25 HP Outboard Motors
Yamaha’s high-powered portables are redefining the expectations for portable horsepower, 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.
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.
- Now available in new pearlescent white and matte brown*, in addition to Yamaha gray
- 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
| 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 |
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