Listed gear-ratio data for 1998 Yamaha 50 HP outboards. Match your exact model and lower unit; some models may have more than one gearcase configuration.
1998 Yamaha 50 HP
Listed ratio values: 1.85:1, 2.33:1
| Model | Gear ratio |
|---|---|
| C50TLRW | 1.85:1 |
| F50TLHW | 1.85:1 |
| F50TLRW | 1.85:1 |
| T50TLRW | 2.33:1 |
Use the ratio that matches your exact outboard model and lower unit, then enter it in the PropSlip calculator.