Yamaha
Yamaha F25: specifications
The Yamaha F25 is an outboard rated at 25 hp with inline-twin architecture.
Key figures
- Power
- 25hp
- Dry weight
- 56kg
- Displacement
- 432cm³
- Alternator output
- 16A
- Indicative price
- 5,085€
- Maximum warranty
- 3years
Sources and technical context
Document year: 2024.
Notes and conditions (FR)
Tarif EU 2024. Indicative source price: request a quote for your country, date and required configuration.
Technical specifications
Block & combustion
| Architecture | L2 |
|---|---|
| Power (kW) | 18.4 kW |
| Cylinders | 2 |
| Cycle | 4-stroke |
| Displacement | 432 cm³ |
| Bore × stroke | 65 × 65,1 mm |
| Compression ratio | 9,1:1 |
| Max rpm | 5000–6000 rpm |
| Specific output | 58 hp/L |
| Fuel system | Injection électronique (EFI) |
| Min. fuel | RON 90 (PON 86) |
Transmission & gearcase
| Gear ratio | 2,08:1 |
|---|---|
| Propeller configuration | Mono-hélice |
| Counter-rotating dual prop | n/a |
| 2-speed gearbox | No |
| Counter-rotating version | No |
| Available shafts | S/L/X (15"/20"/25") |
Weight & footprint
| Dry weight (transom load) | 56 kg |
|---|---|
| Power-to-weight ratio | 0.45 hp/kg |
Electrical charging
| Alternator (max) | 16 A |
|---|---|
| Amps per horsepower | 0.64 A/hp |
Control & integration
| Digital throttle & shift (DBW) | No |
|---|---|
| Control | Barre franche / commande à distance |
| Steering | n/a |
| Power steering | No |
| Docking joystick | No |
| GPS position hold | No |
| Direct injection | No |
| VTEC (variable timing) | No |
Cost & warranty
| Public price | 5,085 € |
|---|---|
| Cost per horsepower | 203 €/hp |
| Base warranty | 2 years |
| Maximum warranty (conditional) | 3 years |
Operation & compliance
| Fuel burn at WOT | 9.2 L/h |
|---|---|
| Emissions standard | RCD |
Head to head with its direct rivals
Prices, warranties and test conditions are not harmonised. They remain visible but do not determine strengths or rankings.
Side-by-side figures for the F25 against Honda BF25 · Mercury FourStroke 25 EFI · Selva Amberjack 25 EFI, on the criteria that drive the purchase.
| Criterion | F25 | Honda BF25 | Mercury FourStroke 25 EFI | Selva Amberjack 25 EFI |
|---|---|---|---|---|
| Power hp | 25 | 25 | 25 | 25 |
| Dry weight kg | 56 | 70.5 | 60 | 56 |
| Power / weight hp/kg | 0.45 | 0.35 | 0.42 | 0.45 |
| Alternator output A | 16 | 10 | 17✓ | 16 |
| Cost per hp €/hp | 203 | n/a | 221 | 190 |
| Base warranty years | 2 | 3 | 2 | 5 |
An index requires at least two criteria documented for every compared engine. “n/a” means the available data cannot assess this use; it is not a poor rating.
HondaBF2525 hp · 70.5 kg · 0.6 LMercuryFourStroke 25 EFI25 hp · 60 kg · 0.5 LSelvaAmberjack 25 EFI25 hp · 56 kg · 0.4 L