Toro Lawn-Boy Transmission Kit

If your mower is running but failing to self-propel, or if you notice the drive speed is inconsistent, slipping, or completely unresponsive, the transmission is likely the culprit. This kit is designed to address those specific mechanical failures in the drivetrain.

No, this is a specific replacement part for model 131-9665. You should always verify your mower's specific model number against the manufacturer's parts diagram to ensure this kit is the correct match for your machine.

Yes, this kit is designed as a direct replacement for the original equipment, providing the necessary hardware to restore your mower's self-propulsion. However, it is always a good idea to inspect your drive belt and cables for wear while you have the mower open, as those components may also need attention.

Replacing a transmission is a moderate-level repair. If you are comfortable using basic hand tools and following a service manual, you can likely handle this yourself, though it does require removing the rear wheels and drive components to access the transmission housing.

Yes. Because this kit is engineered to meet original equipment standards, installing it will return your mower's self-propulsion system to its factory-specified performance and speed.