Listed gear-ratio data for 2023 Yamaha 300 HP outboards. Match your exact model and lower unit; some models may have more than one gearcase configuration.
2023 Yamaha 300 HP
Listed ratio values: 1.75:1
| Model | Gear ratio |
|---|---|
| F300ECB | 1.75:1 |
| F300ECB2 | 1.75:1 |
| F300ESB | 1.75:1 |
| F300ESB2 | 1.75:1 |
| F300UCB | 1.75:1 |
| F300UCB2 | 1.75:1 |
| F300USB | 1.75:1 |
| F300USB2 | 1.75:1 |
| F300XA | 1.75:1 |
| F300XCB | 1.75:1 |
| F300XCB2 | 1.75:1 |
| F300XSB | 1.75:1 |
| F300XSB2 | 1.75:1 |
| LF300ECB | 1.75:1 |
| LF300ECB2 | 1.75:1 |
| LF300ESB | 1.75:1 |
| LF300ESB2 | 1.75:1 |
| LF300UCB | 1.75:1 |
| LF300UCB2 | 1.75:1 |
| LF300USB | 1.75:1 |
| LF300USB2 | 1.75:1 |
| LF300XA | 1.75:1 |
| LF300XCB | 1.75:1 |
| LF300XCB2 | 1.75:1 |
| LF300XSB | 1.75:1 |
| LF300XSB2 | 1.75:1 |
Use the ratio that matches your exact outboard model and lower unit, then enter it in the PropSlip calculator.