1. Introduction
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your BLACK+DECKER KD975 Percussion Hammer Drill. Please read these instructions carefully before using the tool and keep them for future reference.
The BLACK+DECKER KD975 is designed for efficient drilling in various materials, including stone, concrete, and other hard surfaces. It features an SDS-Plus chuck for secure bit changes and a chiseling function for light demolition tasks.
2. General Safety Instructions
WARNING: Read all safety warnings, instructions, illustrations, and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire, and/or serious injury.
- Work Area Safety: Keep your work area clean and well-lit. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
- Electrical Safety: Power tool plugs must match the outlet. Never modify the plug in any way. Avoid body contact with earthed or grounded surfaces.
- Personal Safety: Always wear eye protection. Use hearing protection when operating the tool for extended periods. Wear a dust mask if drilling dusty materials. Dress properly; avoid loose clothing or jewelry.
- Tool Use and Care: Do not force the power tool. Use the correct power tool for your application. Disconnect the plug from the power source before making any adjustments, changing accessories, or storing power tools.
- Service: Have your power tool serviced by a qualified repair person using only identical replacement parts.
3. Product Overview
Familiarize yourself with the components of your KD975 Percussion Hammer Drill.

Figure 1: Overview of the BLACK+DECKER KD975 Percussion Hammer Drill. This image shows the main body of the drill, including the handle, chuck, and power cord connection point.
Key Components:
- SDS-Plus Chuck: For quick and secure bit insertion.
- Mode Selector Switch: To switch between drilling, hammer drilling, and chiseling functions.
- Trigger Switch: To activate and control the speed of the drill.
- Auxiliary Handle: For improved control and stability during operation.
- Depth Stop: For precise drilling depth control.
- Power Cord: For connecting to the electrical supply.
4. Setup and Assembly
4.1 Attaching the Auxiliary Handle
The auxiliary handle can be rotated 360 degrees to suit left or right-handed use and for optimal positioning. Loosen the handle by twisting it counter-clockwise, position it as desired, and then tighten it clockwise until secure.
4.2 Installing the Depth Stop
Insert the depth stop into the hole on the auxiliary handle. Adjust the depth stop to the desired drilling depth by sliding it in or out. Secure it by tightening the auxiliary handle.
4.3 Inserting SDS-Plus Drill Bits
- Clean the shank of the drill bit.
- Pull back the chuck sleeve.
- Insert the drill bit into the chuck until it clicks into place.
- Release the chuck sleeve.
- Pull the drill bit to ensure it is securely locked. A slight axial play is normal for SDS-Plus systems.
4.4 Power Connection
Ensure the power switch is in the "OFF" position before plugging the tool into a 220V AC power outlet. Verify that the voltage of your power supply matches the rating on the tool's nameplate.
5. Operating Instructions
5.1 Selecting the Operating Mode
The KD975 offers three operating modes:
- Drilling (Rotation Only): For drilling in wood, metal, and plastics. Set the mode selector to the drill icon.
- Hammer Drilling (Rotation with Hammering): For drilling in concrete, masonry, and stone. Set the mode selector to the hammer drill icon.
- Chiseling (Hammering Only): For light chiseling, chipping, or demolition work. Set the mode selector to the chisel icon. Ensure the chisel is correctly oriented before locking.
CAUTION: Always switch off the tool and unplug it from the power source before changing the operating mode.
5.2 Starting and Stopping
To start the tool, press the trigger switch. The drilling speed is variable depending on the pressure applied to the trigger. To stop the tool, release the trigger switch.
5.3 Drilling Tips
- Always hold the tool firmly with both hands.
- Apply steady, even pressure. Do not force the drill.
- For deep holes, periodically withdraw the drill bit to clear debris.
- When drilling into hard materials, start with a slower speed and gradually increase.
6. Maintenance
WARNING: Always unplug the tool from the power source before performing any maintenance or cleaning.
6.1 Cleaning
Regularly clean the ventilation slots of the tool to prevent overheating. Use a soft brush or compressed air. Do not use water or chemical cleaning agents.
Clean the SDS-Plus chuck regularly and apply a small amount of grease to the bit shank before insertion to ensure smooth operation and prolong tool life.
6.2 Storage
Store the tool in a dry, secure place out of reach of children. Protect it from direct sunlight and extreme temperatures.
6.3 Carbon Brushes
The carbon brushes are wear parts. If the tool shows reduced performance or excessive sparking, have the carbon brushes checked and replaced by an authorized service center.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start. | No power supply. Faulty power cord/plug. Trigger switch fault. | Check power outlet. Inspect cord/plug for damage; replace if necessary. Contact service center. |
| Reduced drilling performance. | Worn drill bit. Incorrect mode selected. Worn carbon brushes. | Replace drill bit. Ensure hammer drilling mode is selected for masonry. Have carbon brushes checked/replaced. |
| Excessive vibration or noise. | Loose drill bit. Internal mechanical issue. | Ensure drill bit is securely locked in chuck. Discontinue use and contact service center. |
8. Technical Specifications
| Feature | Specification |
|---|---|
| Model Number | KD975-XK |
| Power Source | Corded Electric |
| Voltage | 220 Volts (AC) |
| No-Load Speed | 0-980 rpm |
| Chuck Type | SDS-Plus |
| Max. Drilling Diameter (Concrete) | 22 mm |
| Max. Drilling Diameter (Steel) | 13 mm |
| Max. Drilling Diameter (Wood) | 30 mm |
| Chiseling Function | Yes |
| Weight | 2.4 kg (5.29 lbs) |
| Dimensions (L x W x H) | 36.8 x 31.5 x 10.4 cm |
9. Warranty and Support
BLACK+DECKER products are manufactured to high-quality standards and are guaranteed for a specific period from the date of purchase. For detailed warranty information, please refer to the warranty card included with your product or visit the official BLACK+DECKER website.
For technical assistance, spare parts, or repair services, please contact your local BLACK+DECKER service center. Always provide the model number (KD975-XK) and serial number (if applicable) when seeking support.





