Dewalt D25404K Manual

The Dewalt D25404K is a powerful 1-1/8-inch SDS rotary hammer designed for heavy-duty applications. It features a durable motor, a variable speed control, and a two-mode operation for drilling and chiseling. This manual provides essential information on safety, features, installation, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Operating Instructions 8. Maintenance 9. Safety Information 10. Troubleshooting

Features at a Glance

Key components: SDS chuck, variable speed control, two-mode operation, and ergonomic design for comfort during extended use.

Feature	Description
SDS Chuck	Allows for quick and easy bit changes
Variable Speed Control	Provides precise control for different applications
Two-Mode Operation	Switch between drilling and chiseling modes
Ergonomic Design	Reduces user fatigue during prolonged use
Depth Rod	Ensures consistent drilling depth
Side Handle	Provides additional control and stability

Installation

Unpack the tool and inspect for any damage. Ensure all components are included.

Attach the side handle for better control.
Insert the SDS bit into the chuck until it locks in place.
Connect to a suitable power source.

WARNING! Always wear appropriate safety gear when operating the tool.

First-Time Setup

Power on the tool and familiarize yourself with the controls.

Select the desired mode (drilling or chiseling).
Adjust the speed setting based on the material being worked on.
Practice using the tool on scrap material to gain confidence.

CAUTION! Ensure the work area is clear of obstacles.

Specifications

Power: 8.5 Amps.
Impact Energy: 3.5 Joules.
Weight: 6.5 lbs.
Chuck Type: SDS Plus.
Speed: 0-1,300 RPM.
Blows per Minute: 0-4,500 BPM.
Dimensions: 12.5 x 10.5 x 4.5 inches.

Controls and Settings

Access the mode switch and speed control located on the handle. The side handle can be adjusted for better grip.

Safety Features: Includes a safety clutch to prevent tool damage and user injury.

Connecting Devices

Ensure the tool is unplugged before connecting any accessories.

Insert the SDS bit into the chuck.
Connect to a power source with the appropriate voltage.

Tip: Always check the power cord for damage before use.

Operating Instructions

Follow these steps to operate the tool effectively.

Power on the tool and select the desired mode.
Position the tool at the desired angle against the material.
Apply steady pressure while operating.

WARNING! Do not force the tool; let it do the work.

Maintenance

Regular maintenance is essential for optimal performance.

Clean the tool after each use.
Inspect the power cord and plug for damage.
Lubricate the chuck as needed.

CAUTION! Unplug the tool before performing maintenance.

Safety Information

Always follow safety guidelines when operating the tool.

Wear safety goggles and gloves.
Keep the work area clean and well-lit.
Do not operate the tool in wet conditions.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Tool does not start	No power	Check power source and connections.
Excessive vibration	Loose parts	Tighten all screws and components.
Bit not rotating	Chuck jammed	Remove bit and clear any debris.
Overheating	Continuous use	Allow tool to cool down before resuming.

Service: For further assistance, contact Dewalt customer service.