1. Introduction
Thank you for choosing the GrecoShop 1050W 38mm Hammer Drill Demolisher. This powerful tool is designed for heavy-duty drilling and chiseling tasks in concrete, masonry, and other tough materials. Please read this manual carefully before operating the tool to ensure safe and efficient use. Keep this manual for future reference.
2. Safety Instructions
Always follow basic safety precautions when using electrical tools to reduce the risk of fire, electric shock, and personal injury.
- Work Area Safety: Keep your work area clean and well-lit. Cluttered or dark areas invite accidents. 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. Do not abuse the cord. Never use the cord for carrying, pulling, or unplugging the power tool. Keep cord away from heat, oil, sharp edges, or moving parts.
- Personal Safety: Always wear eye protection. Use hearing protection when operating for extended periods. Wear a dust mask if working in dusty conditions. 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. This will ensure that the safety of the power tool is maintained.
3. Package Contents
Carefully unpack the contents and ensure all items are present and undamaged. If any items are missing or damaged, contact your retailer immediately.
- GrecoShop 1050W 38mm Hammer Drill Demolisher
- Adjustable Auxiliary Handle
- Replacement Carbon Brushes
- Service Key
- 1 x 65mm Hole Saw
- 1 x 22x350mm Hole Saw Rod
- 1 x 22x350mm Helical Drill Bit
- 1 x 7x11mm Helical Drill Bit
- 1 x 17x350mm Pointed Chisel
- 1 x 17x350mm Flat Chisel
- Carrying Case
4. Product Features
The GrecoShop Hammer Drill Demolisher is equipped with features designed for versatility and performance:
- Percussion Stop Function: Allows for drilling without the hammering action, ideal for wood or metal.
- Rotation Stop Function: Disables rotation for chiseling-only applications, perfect for demolition work.
- Hexagonal Attachment: Secure and quick bit changes for various applications.
- Adjustable Auxiliary Handle: Provides enhanced control and comfort during operation.
- Powerful 1050W Motor: Delivers robust performance for demanding tasks.
- High Impact Energy: 8 Joules of impact energy for efficient demolition.

Figure 4.1: The GrecoShop Hammer Drill Demolisher with a pointed chisel inserted, showcasing its robust design and auxiliary handle. This image highlights the tool's primary function as a demolisher.
5. Setup
- Attaching the Auxiliary Handle: Loosen the clamp on the auxiliary handle. Slide the handle onto the front of the tool body. Adjust its position for comfortable and secure grip, then tighten the clamp firmly.
- Inserting Bits:
- Ensure the tool is unplugged from the power source.
- Pull back the locking sleeve on the tool's chuck.
- Insert the desired hexagonal bit (drill bit or chisel) into the chuck until it clicks into place.
- Release the locking sleeve and pull on the bit to ensure it is securely seated.
- Power Connection: Connect the power cord to a suitable power outlet. Ensure the voltage matches the tool's requirements.

Figure 5.1: The GrecoShop Hammer Drill Demolisher displayed alongside its comprehensive set of included accessories, including various drill bits and chisels. This image illustrates the versatility of the tool for different applications.
6. Operating Instructions
This tool offers multiple operating modes for different applications:
- Drilling Mode (Rotation Only):
- Set the mode selector switch to the "Rotation Only" symbol (usually a drill icon). This disables the percussion function.
- Insert a suitable drill bit for wood, metal, or plastic.
- Hold the tool firmly with both hands. Position the drill bit on the workpiece and press the trigger.
- Hammer Drilling Mode (Rotation with Percussion):
- Set the mode selector switch to the "Hammer Drill" symbol (usually a drill and hammer icon).
- Insert a suitable drill bit for concrete or masonry.
- Apply steady, firm pressure. Do not lean into the tool excessively; let the hammer action do the work.
- Chiseling Mode (Percussion Only):
- Set the mode selector switch to the "Chisel" symbol (usually a hammer icon). This disables the rotation function.
- Insert a pointed or flat chisel.
- Position the chisel on the material to be broken or removed. Press the trigger and guide the tool.
- Speed Control: The trigger switch allows for variable speed control. Pressing the trigger further increases the speed and impact rate.
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your tool.
- Cleaning: After each use, clean the tool with a soft cloth. Do not use harsh chemicals or abrasive cleaners. Keep ventilation openings clear of dust and debris.
- Carbon Brush Replacement: The tool is supplied with replacement carbon brushes. When the motor performance decreases or sparks become excessive, the carbon brushes may need replacement.
- Unplug the tool.
- Locate the brush caps on the sides of the motor housing.
- Use the service key to unscrew the brush caps.
- Remove the old carbon brushes and insert the new ones, ensuring they are oriented correctly.
- Screw the brush caps back on firmly.
- Lubrication: The internal mechanism is factory-lubricated. Do not attempt to lubricate internal components unless specified by a qualified technician.
- Storage: Store the tool in its carrying case in a dry, secure place, out of reach of children.
8. Troubleshooting
Refer to this section for common issues and their solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start. | No power supply; faulty power cord; worn carbon brushes. | Check power connection and outlet. Inspect power cord for damage. Replace carbon brushes if worn. |
| Low power or excessive sparking. | Worn carbon brushes; motor overload. | Replace carbon brushes. Reduce load on the tool. |
| Bit not holding securely. | Chuck not fully engaged; damaged chuck. | Ensure bit is fully inserted and locking sleeve is released. If problem persists, chuck may need service. |
| Excessive vibration or noise. | Damaged internal components; loose parts. | Discontinue use and have the tool inspected by a qualified service center. |
9. Specifications
| Characteristic | Value |
|---|---|
| Brand | GrecoShop |
| Model | 38mm 1050W Hammer Drill Demolisher |
| Power (Watt) | 1050 W |
| Impact Energy (Joules) | 8 J |
| No-Load Speed (RPM) | 400 RPM |
| Impact Rate (BPM) | 2800 BPM |
| Max. Drilling Capacity (Concrete) | 38 mm |
| Weight | 7.5 kg |
| Dimensions (LxWxH) | 520x130x350 mm |
| ASIN | B007H65TEW |
| UPC | 012345678912 |
10. Warranty and Support
For warranty information or technical support, please contact GrecoShop directly through their official channels or the retailer from whom you purchased the product. Keep your purchase receipt as proof of purchase.
This product is from a small or medium-sized enterprise brand registered on Amazon's Brand Registry or an artisan part of Amazon Handmade based in Italy. Your purchase supports small and medium-sized businesses.
For further assistance, you may visit the GrecoShop store on Amazon: GrecoShop Amazon Store





