Listed gear-ratio data for 2020 Yamaha 300 HP outboards. Match your exact model and lower unit; some models may have more than one gearcase configuration.
2020 Yamaha 300 HP
Listed ratio values: 1.75:1
| Model | Gear ratio |
|---|---|
| F300ECA | 1.75:1 |
| F300ECA2 | 1.75:1 |
| F300UCA | 1.75:1 |
| F300UCA2 | 1.75:1 |
| F300XA | 1.75:1 |
| F300XCA | 1.75:1 |
| F300XCA2 | 1.75:1 |
| LF300ECA | 1.75:1 |
| LF300ECA2 | 1.75:1 |
| LF300UCA | 1.75:1 |
| LF300UCA2 | 1.75:1 |
| LF300XA | 1.75:1 |
| LF300XCA | 1.75:1 |
| LF300XCA2 | 1.75:1 |
Use the ratio that matches your exact outboard model and lower unit, then enter it in the PropSlip calculator.