Manufacturer
Yamaha 20hp
Japanese manufacturer of marine propulsion and boat-control systems, including electric propulsion products.
Official manufacturer website ↗
20hp
From calm coves to coastal runs, the 20hp blends smart tech with smooth power to make every trip feel like second nature. Big on performance, light on effort; it's your all-access pass to the best kind of weekend.
Key facts
- Family: Versatile
- Engine type: SOHC, In-line 2 cylinders
- Displacement: 362 cm³, F20G: 432 cm³
- Rated output: 14.7 kW
- Weight: 51 kg - 61 kg, F20G; 56 kg - 66 kg
- Operating range: 5000 – 6000 r/min
- Fuel system: 1 carburetor, F20G: Fuel injection
Position in Yamaha range
The Versatile family covers smaller general-purpose outboards for tenders, fishing boats and compact installations.
This is model 2 of 6 in the Versatile family when the range is ordered from higher to lower rated output.
Neighbouring models
Before choosing
Verify the boat manufacturer’s permitted power range, transom height and shaft length, engine and rigging weight, steering and control compatibility, electrical load, propeller selection and the exact variant code before ordering. For twin or multiple-engine installations, confirm steering and control-system requirements as a complete package.
FAQ
- Is this the same as another Yamaha model with similar horsepower?
- Not necessarily. Yamaha can offer different families, control systems, shaft lengths, rotations or duty-oriented variants at a similar output. Compare the full specification rather than horsepower alone.
- What should be verified before installation?
- Confirm shaft or mounting configuration, steering and controls, electrical requirements, propeller selection, weight and the exact model or variant code.
Sources & verification
Technical data: Yamaha Motor Europe official product page. Official factsheet. Verified: 2026-09-06.
Engine
| Engine type | SOHC, In-line 2 cylinders |
|---|---|
| Displacement | 362 cm³, F20G: 432 cm³ |
| Bore x stroke | 63.0 × 58.1 mm, F20G: 65.0 × 65.1 mm |
| Compression ratio | 9.3 : 1, F20G: 9.1 : 1 |
| Fuel induction system | 1 carburetor, F20G: Fuel injection |
| Lubrication system | Wet sump |
| Engine oil capacity | 1.8 L/ 1.6 L (with / without oil filter replacement), F20G: 1.1 L/ 1.0 L (with / without oil filter replacement) |
| Ignition / advance system | CDI, F20G: TCI |
| Alternator | 10 A (Except MH), F20G: 16 A |
Dimensions
| Overall length | MH, EH, EHP: 1048 mm, E, EP: 665 mm, F20G: MH, WH, WHP: 1130 mm, E, W, EP, WP: 633 mm |
|---|---|
| Overall width | MH, EH, EHP: 420 mm, E, EP: 390 mm, F20G: 378 mm |
| Overall height | S: 1078 mm, L: 1205 mm, F20G: S: 1106 mm, L: 1233 mm |
| Engine transom height | S: 438 mm, L: 565 mm, EP: S: 443 mm, EHP, EP: L: 570 mm, F20G: S: 424 mm, S: 429 mm: EP, WP, WHP L: 551 mm, L 556 mm: EP, WP, WHP |
| Steering angle | Manual: 45 degrees (PT: 40 degrees) each direction |
| Dry weight | 51 kg - 61 kg, F20G; 56 kg - 66 kg |
Performance
| Maximum propeller shaft output | 14.7 kW |
|---|---|
| Full throttle operating range | 5000 – 6000 r/min |
| Idling speed | 1000 – 1100 r/min (EHP: 1150 – 1250 r/min), F20G: 850 – 950 r/min |
Bracket/Drive
| Shallow water drive | Manual: 2 positions EHP, EP: PT: variable position |
|---|---|
| Gear shift | F-N-R |
| Gear ratio | 2.08 (27/13) |
| Gear oil capacity | 0.250 L, F20G: 0.370 L |