1. Gather the necessary tools and parts:
- New drive belt
- Wrenches
- Socket set
- Screwdriver
- Gloves
2. Park the lawn mower on a level surface, engage the parking brake, and turn off the engine.
3. Disconnect the spark plug wire to prevent accidental starting.
4. Locate the drive belt:
- The drive belt is usually located under the mower deck, near the transmission.
5. Loosen the tensioner pulley:
- Look for a pulley that has a spring or lever that can be adjusted.
- Loosen the tensioner pulley to release tension on the drive belt.
6. Remove the old drive belt:
- Slip the old drive belt off the pulleys.
7. Inspect the pulleys for wear or damage:
- Replace any damaged pulleys.
8. Install the new drive belt:
- Wrap the new drive belt around the pulleys, starting with the transmission pulley.
- Make sure the belt is routed correctly according to the manufacturer's instructions.
9. Reattach the tensioner pulley:
- Tighten the tensioner pulley to put tension on the drive belt.
10. Reconnect the spark plug wire.
11. Start the lawn mower and check the drive belt operation:
- Ensure the drive belt is moving smoothly and there are no signs of slipping or rubbing.
12. If necessary, adjust the tensioner pulley to obtain proper belt tension.
13. Test the lawn mower to ensure it is operating correctly.
Remember, if you are not comfortable performing this repair yourself, it is recommended to seek assistance from a qualified technician.