Makita DLX2157TJ1 18V Brushless Hammer Drill and Angle Grinder Combo Kit

1. Important Safety Instructions

Always observe basic safety precautions when using electric tools to reduce the risk of fire, electric shock, and personal injury. Read all instructions before operating this product.

• 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: Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges, and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
• Personal Safety: Always wear eye protection. Use appropriate safety equipment such as dust masks, non-skid safety shoes, hard hats, or hearing protection when necessary. Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing, and gloves away from moving parts.
• Tool Use and Care: Do not force the power tool. Use the correct power tool for your application. It will do the job better and safer at the rate for which it was designed. Disconnect the plug from the power source and/or the battery pack from the power tool before making any adjustments, changing accessories, or storing power tools.
• Battery Tool Use and Care: Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack. Use power tools only with specifically designated battery packs.

2. Package Contents

The Makita DLX2157TJ1 combo kit includes the following items:

• Makita DHP481 18V Brushless Hammer Drill Driver
• Makita DGA504 18V Brushless Angle Grinder
• 3 x Makita BL1850B 18V 5.0Ah Li-ion Batteries
• Makita DC18RC Rapid Charger
• Side Handle for Hammer Drill
• Side Handle for Angle Grinder
• Grinding Wheel Guard
• Grinding Wheel
• Makita MAKPAC Type 3 Connector Case
• Instruction Manuals for each tool

Image: The complete Makita DLX2157TJ1 combo kit, showcasing the hammer drill, angle grinder, three 5.0Ah 18V batteries, a charger, and the MAKPAC Type 3 connector case.

3. Product Overview

3.1 Makita DHP481 18V Brushless Hammer Drill Driver

The DHP481 is a powerful 18V cordless hammer drill driver featuring a brushless motor for increased efficiency and longer tool life. It offers two mechanical gears, variable speed control, and a hammer function for drilling into masonry. The ergonomic design ensures comfortable use.

3.2 Makita DGA504 18V Brushless Angle Grinder

The DGA504 is an 18V cordless angle grinder equipped with a brushless motor, providing high power and extended run time. It features an automatic speed control that adjusts the cutting speed according to the load condition, and an anti-restart function for user safety.

4. Setup

4.1 Battery Charging

1. Connect the DC18RC Rapid Charger to a suitable power outlet.
2. Insert the 18V Li-ion battery pack into the charger. Ensure it clicks into place.
3. The charger's indicator light will show the charging status. A full charge is indicated when the light changes (refer to charger manual for specific light patterns).
4. Once fully charged, remove the battery from the charger.

4.2 Attaching Accessories to DHP481 Hammer Drill

1. Ensure the battery pack is removed from the drill.
2. Installing the Side Handle: Screw the side handle into the designated threaded hole on the front of the drill. Tighten securely.
3. Installing Drill Bits: Rotate the chuck counter-clockwise to open the jaws. Insert the drill bit fully into the chuck. Rotate the chuck clockwise to tighten the jaws securely around the drill bit. Ensure the bit is centered and firmly held.

4.3 Attaching Accessories to DGA504 Angle Grinder

1. Ensure the battery pack is removed from the grinder.
2. Installing the Side Handle: Screw the side handle into one of the two threaded holes on the grinder head. Choose the position that offers the best control for your application. Tighten securely.
3. Installing the Wheel Guard: Position the wheel guard over the spindle housing. Ensure it is securely fitted and adjusted to protect against sparks and debris. Tighten any securing screws or levers.
4. Installing Grinding/Cutting Wheels: Press the spindle lock button. Place the inner flange onto the spindle. Place the grinding or cutting wheel onto the inner flange. Screw the outer flange (nut) onto the spindle and tighten it firmly using the provided wrench. Release the spindle lock.

5. Operating Instructions

5.1 Operating the DHP481 Hammer Drill Driver

1. Battery Installation: Slide a charged battery pack into the base of the drill until it clicks into place.
2. Mode Selection:
   • Drill Mode: Rotate the mode ring to the drill symbol for general drilling.
   • Hammer Drill Mode: Rotate the mode ring to the hammer drill symbol for drilling into masonry.
   • Screwdriver Mode: Rotate the mode ring to the screwdriver symbol. Adjust the torque ring to the desired setting (1-21) for driving screws.
3. Speed Selection: Use the gear selector switch on top of the drill to choose between high speed (2) and low speed (1).
4. Operation: Hold the drill firmly with both hands (using the side handle for better control). Press the trigger switch to start the drill. The speed is variable depending on how far the trigger is pressed. Apply steady, even pressure.
5. Reversing Rotation: Use the forward/reverse lever located above the trigger to change the direction of rotation.

5.2 Operating the DGA504 Angle Grinder

1. Battery Installation: Slide a charged battery pack into the base of the grinder until it clicks into place.
2. Starting the Grinder: Ensure the work area is clear. Hold the grinder firmly with both hands (using the side handle). Slide the lock-off button (if present) and then press the paddle switch or slide switch to start the grinder.
3. Grinding/Cutting: Allow the wheel to reach full speed before contacting the workpiece. Apply light, even pressure. Do not force the tool. Maintain a stable stance and keep the wheel guard between you and the workpiece as much as possible.
4. Stopping the Grinder: Release the paddle switch or slide switch. Wait for the wheel to come to a complete stop before setting the tool down.
5. Automatic Speed Control: The grinder automatically adjusts its speed and torque during operation based on the load, optimizing performance.

6. Maintenance

Regular maintenance ensures optimal performance and extends the life of your tools.

• Cleaning: After each use, clean the tools with a soft cloth to remove dust and debris. Do not use harsh chemicals or abrasive cleaners. Keep ventilation openings clear.
• Battery Care: Store batteries in a cool, dry place away from direct sunlight. Do not store fully discharged batteries for extended periods. Charge them periodically if not in use.
• Inspection: Regularly inspect the power cords (if applicable for charger), switches, and housing for any damage. Check that all screws are tight.
• Accessory Inspection: Inspect drill bits, grinding wheels, and guards for wear or damage before each use. Replace worn or damaged accessories immediately.
• Brushless Motors: These tools feature brushless motors, eliminating the need for carbon brush replacement.

7. Troubleshooting

8. Specifications

• Model Number: DLX2157TJ1
• Brand: Makita
• Voltage: 18 Volt
• Battery Composition: Lithium-Ion
• Battery Amperage: 5 Ampere (5.0Ah)
• Hammer Drill Driver (DHP481): Brushless Motor, 2-speed, Hammer function
• Angle Grinder (DGA504): Brushless Motor, Automatic Speed Control, Anti-restart function
• Charger: DC18RC Rapid Charger
• Case: MAKPAC Type 3 Connector Case
• GTIN/UPC: 088381819114
• ASIN: B01MXRRJFS

9. Warranty and Support

Makita power tools are manufactured under strict quality control standards. This product is covered by Makita's standard warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Makita website.

For technical support, service, or spare parts, please contact your local authorized Makita service center or dealer. You can find contact information on the official Makita website: www.makita.com