1. Introduction
This manual provides essential information for the proper installation and maintenance of the DEWALT DW734/DW733 Planer Replacement Toothed Belt, part number 429962-08. This genuine OEM replacement part is designed to restore optimal performance to your DEWALT DW733 Type 2 12 1/2 inch Planer and DW734 Type 1 12-1/2 inch Planer.
The toothed belt is a critical component for power transmission within your planer. Regular inspection and timely replacement ensure consistent operation and prolong the life of your tool.

Image showing the genuine DEWALT replacement toothed belt, part number 429962-08, designed for DW733 and DW734 planers.
2. Safety Information
Always adhere to the following safety precautions when working with power tools and replacement parts:
- Disconnect Power: Before attempting any installation, maintenance, or repair, always disconnect the planer from its power source to prevent accidental startup.
- Wear Personal Protective Equipment (PPE): Use safety glasses, gloves, and any other recommended PPE to protect against injury.
- Refer to Planer Manual: Consult your DEWALT planer's original owner's manual for specific disassembly and reassembly instructions relevant to your model.
- Use Correct Tools: Ensure you use the appropriate tools for the task. Avoid forcing parts or using incorrect tools that could cause damage or injury.
- Work in a Clean Area: Maintain a clean and well-lit workspace to prevent accidents.
3. Setup and Installation
Replacing the toothed belt requires careful attention to detail. Follow these general steps, referring to your planer's specific manual for detailed diagrams and fastener locations:
- Disconnect Power: Ensure the planer is unplugged from the electrical outlet.
- Access Belt Compartment: Locate and remove the necessary covers or panels on your planer to access the drive belt system. This typically involves removing screws.
- Remove Old Belt: Carefully remove the worn or damaged belt from the pulleys. Note its orientation if applicable.
- Clean Pulleys: Thoroughly clean any debris, sawdust, or old belt residue from the pulleys. A clean surface ensures proper grip and extends the life of the new belt.
- Install New Belt:
- The new belt may be tight. For easier installation, some users find it helpful to soak the new belt in warm water for a few minutes to increase its flexibility.
- Carefully stretch the belt over the smaller pulley first, then work it onto the larger pulley. Avoid using sharp tools like screwdrivers to pry the belt, as this can damage the belt or pulleys. Use a blunt object or your hands.
- Ensure the belt is seated correctly in the grooves of both pulleys and is not twisted.
- Reassemble: Replace all covers and panels, ensuring all fasteners are securely tightened.
- Test Operation: Plug in the planer and perform a brief test run to ensure the belt operates smoothly without unusual noises or vibrations.
4. Operating Considerations
Once the replacement belt is installed, the planer should operate as intended. Observe the following:
- Smooth Operation: The planer should run smoothly without excessive vibration or slipping of the belt.
- Power Transmission: The belt should effectively transmit power, allowing the planer to cut efficiently.
- Listen for Noises: Pay attention to any unusual grinding, squealing, or slapping noises, which could indicate an issue with the belt or pulleys.
5. Maintenance
Regular maintenance of your planer's drive belt system will ensure longevity and consistent performance:
- Periodic Inspection: Periodically inspect the belt for signs of wear, such as cracks, fraying, glazing, or missing teeth. The frequency of inspection depends on usage.
- Cleanliness: Keep the belt and pulleys free from sawdust and debris. Accumulation can cause slippage and premature wear.
- Timely Replacement: Replace the belt at the first sign of significant wear or damage to prevent unexpected downtime and potential damage to other components.
6. Troubleshooting
If you encounter issues after replacing the belt, consider the following:
- Belt Slipping:
- Ensure the belt is correctly seated in the pulley grooves.
- Check if pulleys are clean and free of grease or debris.
- Verify the belt is the correct part number for your planer model.
- Unusual Noise (e.g., Squealing, Grinding):
- Inspect for foreign objects caught in the belt or pulleys.
- Ensure all covers are properly reinstalled and not vibrating.
- Confirm the belt is not rubbing against any internal components.
- Difficulty Installing Belt:
- The belt is designed to be tight. Warming the belt in warm water can increase its elasticity for easier installation.
- Ensure you are installing it onto the correct pulleys and in the correct orientation.
- Belt Does Not Fit:
- Double-check the part number (429962-08) against your planer's requirements.
- Confirm your planer model is either a DEWALT DW733 Type 2 12 1/2 inch Planer or DW734 Type 1 12-1/2 inch Planer.
7. Specifications
| Part Number | 429962-08 |
| Brand | DEWALT |
| Compatible Models | DEWALT DW733 Type 2 12 1/2 inch Planer, DEWALT DW734 Type 1 12-1/2 inch Planer |
| Belt Type | Toothed |
| Belt Width | 7/8 inches |
| Belt Length | 14 inches |
| Material | Plastic (as per product data) |
| Item Weight | 0.96 ounces |
8. Warranty Information
For detailed warranty information regarding this DEWALT replacement part, please refer to the official DEWALT warranty policy provided with your original planer or visit the official DEWALT website. Warranty terms and conditions may vary.
9. Support
If you require further assistance with the installation or troubleshooting of your DEWALT replacement belt, please contact DEWALT customer service or an authorized DEWALT service center. Contact information can typically be found on the official DEWALT website or in your planer's original manual.





