DEWALT D25263K SDS Rotary Hammer Drill Instruction Manual

1. Product Overview

The DEWALT D25263K SDS Rotary Hammer Drill is a powerful and versatile tool designed for demanding drilling and chipping applications. It features an 8.5 amp high-performance motor, delivering 3.0 Joules of impact energy for fast and efficient work. Equipped with SHOCKS Active Vibration Control, it significantly reduces vibration felt by the user, enhancing comfort and control during extended use. The tool also includes a rotating brush ring for full power in both forward and reverse, and an integral clutch to minimize sudden, high torque reactions if the bit jams.

Figure 1: DEWALT D25263K SDS Rotary Hammer Drill with included side handle and depth rod.

2. Safety Information

Always wear appropriate personal protective equipment (PPE) including safety glasses, hearing protection, and gloves when operating the rotary hammer drill. Ensure the work area is clear of obstructions and bystanders. Disconnect the tool from the power source before making any adjustments, changing accessories, or performing maintenance. Read and understand all safety warnings and instructions provided in the full manual before use.

3. Setup and Assembly

3.1 Attaching the Side Handle and Depth Rod

1. Loosen the side handle clamp by rotating it counter-clockwise.
2. Slide the side handle onto the front of the tool until it is in a comfortable and secure position.
3. Insert the depth rod into the hole on the side handle. Adjust the depth rod to the desired drilling depth.
4. Tighten the side handle clamp by rotating it clockwise to secure both the handle and the depth rod.

Figure 2: Proper grip on the D-handle for enhanced control.

3.2 Inserting and Removing SDS Bits

1. Pull back the chuck collar on the front of the tool.
2. Insert the SDS bit into the chuck until it clicks into place. Release the collar.
3. Pull on the bit to ensure it is securely locked. There should be a slight amount of play, which is normal for SDS systems.
4. To remove, pull back the chuck collar and pull the bit out.

4. Operating Instructions

4.1 Powering the Tool

The DEWALT D25263K is a corded electric tool. Ensure it is plugged into a 115 Volt power outlet. Always use an appropriate extension cord if needed, ensuring it is rated for the tool's amperage (8.5 Amps).

4.2 Selecting Operating Mode

The tool features a mode selector switch located on the side of the gear housing. Rotate the switch to select the desired operating mode:

• Drill Mode (Drill icon): For drilling into wood, metal, and plastics without hammer action.
• Hammer Drill Mode (Hammer and Drill icon): For drilling into concrete, masonry, and stone with both rotation and hammer action. This is the most common mode for heavy-duty applications.
• Chisel Mode (Hammer icon): For light chipping, chiseling, and demolition work. The rotation is disengaged, allowing only hammer action.

Figure 3: Mode selector switch for drilling, hammer drilling, and chiseling functions.

4.3 Starting and Stopping the Tool

To start the tool, press the trigger switch. The speed is variable depending on how far the trigger is pressed. To stop the tool, release the trigger switch. For continuous operation, press the lock-on button while the trigger is depressed. To release the lock-on, press the trigger fully and then release it.

4.4 Forward and Reverse Operation

The forward/reverse switch is located above the trigger. Push the switch to the left for forward rotation (drilling) and to the right for reverse rotation (for removing jammed bits or screws). Always ensure the tool has come to a complete stop before changing the direction of rotation.

5. Maintenance

Regular maintenance ensures optimal performance and extends the life of your tool. Always disconnect the tool from the power supply before performing any maintenance.

• Cleaning: Keep the ventilation slots clear and clean. Use a soft brush or dry cloth to remove dust and debris. Do not use water or chemical cleaning agents.
• Lubrication: The tool is factory-lubricated and does not require additional lubrication under normal use.
• Carbon Brushes: The carbon brushes are designed for long life and are typically self-disconnecting when worn. Replacement should be performed by a qualified service technician.
• Cord Inspection: Regularly inspect the power cord for damage. If damaged, have it replaced by a qualified service technician to avoid hazards.

6. Troubleshooting

If you encounter issues with your DEWALT D25263K, refer to the following common troubleshooting steps:

• Tool does not start: Check if the power cord is securely plugged into a live outlet. Ensure the trigger switch is fully depressed and the lock-on button (if engaged) is released.
• Loss of power or intermittent operation: Inspect the power cord for any visible damage. Ensure the extension cord (if used) is of adequate gauge and length.
• Excessive vibration or unusual noise: Stop operation immediately. Check if the bit is correctly inserted and secured. If the issue persists, discontinue use and contact customer support.
• Bit not rotating or hammering: Verify the mode selector switch is set to the correct position (Drill, Hammer Drill, or Chisel). Ensure the bit is not jammed.

For persistent problems or internal component issues, do not attempt repairs yourself. Contact a DEWALT authorized service center.

7. Specifications

8. Warranty and Support

The DEWALT D25263K SDS Rotary Hammer Drill comes with a comprehensive warranty and support package:

• 3-Year Limited Warranty: Covers defects in material or workmanship.
• 1-Year Free Service: DEWALT will maintain the tool and replace worn parts caused by normal use, for free, any time during the first year after purchase.
• 90-Day Money Back Guarantee: If you are not completely satisfied with the performance of your DEWALT Power Tool, Laser, or Nailer for any reason, you can return it within 90 days from the date of purchase for a full refund.

For warranty claims, service, or technical assistance, please visit the official DEWALT website or contact their customer support.