Manufacturer
Yamaha 100hp
Japanese manufacturer of marine propulsion and boat-control systems, including electric propulsion products.
Official manufacturer website ↗
100hp
Trim, eager and surprisingly punchy, the 100hp proves that lighter can also mean livelier — with smooth acceleration and effortless all-round versatility baked in to one smile-inducing package.
Key facts
- Family: High Power
- Engine type: 16-Valve, SOHC, In-line 4 cylinders
- Displacement: 1832 cm³
- Rated output: 73.6 kW
- Weight: 162 kg - 166 kg
- Operating range: 5000 – 6000 r/min
- Fuel system: Fuel injection
Position in Yamaha range
The High Power family covers mainstream high-output outboards for larger leisure, fishing and general-purpose installations.
This is model 9 of 10 in the High Power family when the range is ordered from higher to lower rated output.
Neighbouring models
- Higher-output neighbour: V MAX SHO 115hp
- Lower-output neighbour: V MAX SHO 90hp
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 | 16-Valve, SOHC, In-line 4 cylinders |
|---|---|
| Displacement | 1832 cm³ |
| Bore x stroke | 81.0 × 88.9 mm |
| Compression ratio | 10.0 : 1 |
| Fuel induction system | Fuel injection |
| Lubrication system | Wet sump |
| Engine oil capacity | 3.2 L / 3.0 L (with / without oil filter replacement) |
| Ignition / advance system | TCI |
| Alternator | 35 A (battery charging: 21 A) |
Dimensions
| Overall length | 803 mm |
|---|---|
| Overall width | 488 mm |
| Overall height | L: 1622 mm, X: 1749 mm |
| Engine transom height | L: 516 mm, X: 643 mm |
| Steering angle | 35 degrees each direction |
| Dry weight | 162 kg - 166 kg |
Performance
| Maximum propeller shaft output | 73.6 kW |
|---|---|
| Full throttle operating range | 5000 – 6000 r/min |
| Idling speed | 700 – 800 r/min |
Bracket/Drive
| Shallow water drive | PTT: variable position |
|---|---|
| Gear shift | F-N-R |
| Gear ratio | 2.15 (28/13) |
| Gear oil capacity | 0.760 L |