Yamaha Outboards Equipment
Yamaha F25, F20 and F15 Portable Outboards
Yamaha 25, 20 and 15 hp portable four-stroke outboards: F25 432 cc with battery-less EFI at 126 lb, F20/F15 362 cc; for jon boats, aluminum fishing boats, tenders and inflatables.
Description
Yamaha's F25, F20 and F15 portable outboards combine light weight with SOHC four-stroke power for jon boats, 14 ft aluminum fishing boats, tenders and inflatables.
Models
- F25: 432 cc; battery-less EFI including pull-start models, with automatic decompression; 126 lb (15 in. shaft), 25% lighter than its predecessor; 15 and 20 in. shafts and High Thrust T25; 16 A alternator; VTS trolling control depending on rigging; select models with short tiller, power trim and tilt; gray, pearlescent white or matte brown
- F20: 362 cc SOHC in-line; 126 lb; 15 and 20 in. shafts
- F15: 362 cc SOHC two-cylinder, single carburettor, CDI microcomputer ignition; 111 lb; 10 A alternator
Key features
- Two valves per cylinder SOHC; balanced crankshaft and labyrinth exhaust
- Intake silencer and acceleration pump (F20/F15)
- 45° steering each way; freshwater flush device
- Carry handles, resting pads, oil retention system and optional folding tiller for on-side storage
Technical data (F25)
- Two-cylinder, 432 cc; bore x stroke 65 x 65.1 mm; compression 9.3:1
- 25 hp at 5500 rpm; full-throttle range 5000–6000 rpm
- Weight 57–65 kg (126–143 lb); electric and manual start
- Gear ratio 2.00:1; tilt 62–63°, trim -3° to +16°
- C.A.R.B. 2-star; warranty 3-year pleasure, 3-year government, 1-year commercial
Specifications
| Weight † | 57kg (126 lbs) - 65kg (143 lbs) |
|---|---|
| Full Throttle RPM Range | 5000 - 6000 |
| Fuel Induction System | EFI |
| Recommended Engine Oil | Yamalube® 4M (See owner's manual) |
| 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 |
| Alternator Output at W.O.T. | 16 amp |
| Compression Ratio | 9.3:1 |
| Recommended Fuel | Octane 87 |
| 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 Angle (maximum) | 45° from center, either direction |
| Warranty | Limited 3-year Pleasure, 3-year Government, 1-Year Commercial |
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