Listed gear-ratio data for 1999 Yamaha 30 HP outboards. Match your exact model and lower unit; some models may have more than one gearcase configuration.
1999 Yamaha 30 HP
Listed ratio values: 1.85:1, 2.33:1
| Model | Gear ratio |
|---|---|
| 30ELHX | 1.85:1 |
| 30ELRX | 1.85:1 |
| 30MLHX | 1.85:1 |
| 30MSHX | 1.85:1 |
| T30ESHX | 2.33:1 |
Use the ratio that matches your exact outboard model and lower unit, then enter it in the PropSlip calculator.