Listed gear-ratio data for 1999 Yamaha 150 HP outboards. Match your exact model and lower unit; some models may have more than one gearcase configuration.
1999 Yamaha 150 HP
Listed ratio values: 1.86:1, 2.00:1
| Model | Gear ratio |
|---|---|
| C150TLRX | 1.86:1 |
| C150TXRX | 1.86:1 |
| D150TLRX | 2.00:1 |
| DX150TLRX | 2.00:1 |
| L150TXRX | 1.86:1 |
| LX150TXRX | 1.86:1 |
| P150TLRX | 2.00:1 |
| PX150TLRX | 2.00:1 |
| S150TLRX | 1.86:1 |
| S150TXRX | 1.86:1 |
| SX150TLRX | 1.86:1 |
| SX150TXRX | 1.86:1 |
Use the ratio that matches your exact outboard model and lower unit, then enter it in the PropSlip calculator.