Makita XRH04Z 18V LXT Cordless 7/8" Rotary Hammer Instruction Manual

1. Safety Information

Always read and understand 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.

General Power Tool Safety Warnings

• Work Area Safety: Keep 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. Power tools create sparks which may ignite the dust or fumes. Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.
• Electrical Safety: Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk of electric shock. 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. Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.
• Personal Safety: Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury. Use personal protective equipment. Always wear eye protection. Protective equipment such as a dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.
• Tool Use and Care: Do not force the power tool. Use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed. Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot be controlled with the switch is dangerous and must be repaired. Disconnect the plug from the power source and/or remove the battery pack, if detachable, from the power tool before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally. Store idle power tools out of the reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool. Power tools are dangerous in the hands of untrained users.

2. Product Overview

The Makita XRH04Z 18V LXT Lithium-Ion Cordless 7/8" SDS-Plus Rotary Hammer is engineered for efficient percussive drilling. This versatile tool features 3-mode operation and a built-in torque limiter for stable torque control across various concrete drilling tasks. Its compact design and reduced vibration enhance user comfort and control. As part of Makita's 18V Lithium-Ion series, it offers compatibility with a wide range of cordless tools and benefits from fast battery charge times.

Figure 1: Makita XRH04Z 18V LXT Cordless 7/8" Rotary Hammer with battery attached.

3. Components

The Makita XRH04Z Rotary Hammer includes the following components:

• Makita XRH04Z 18V LXT Cordless 7/8" Rotary Hammer (Tool Only)
• Depth Gauge (Part No. 324219-0)
• Side Handle (Part No. 158057-6)

Note: Battery and charger are not included and must be purchased separately.

Figure 2: Close-up view of the chuck, mode selector, and side handle attachment point.

4. Setup

Battery Installation and Removal

1. To install the battery, align the battery pack with the housing groove and slide it into place until it locks with a click.
2. To remove the battery, press the release button on the battery pack and slide it out of the tool.

Side Handle Adjustment

The side handle can be adjusted to various positions for optimal control and comfort. To adjust:

1. Loosen the side handle by rotating it counter-clockwise.
2. Slide the handle to the desired position along the tool's body.
3. Rotate the handle clockwise to tighten and secure it in place. The handle features indexed positions for a sturdy fit.

Bit Installation and Removal (SDS-PLUS)

The XRH04Z uses SDS-PLUS bits for quick and secure changes:

1. To install, clean the bit shank and insert it into the chuck. Push the bit firmly until it clicks into place. Pull on the bit to ensure it is securely locked.
2. To remove, pull back the chuck sleeve and pull the bit out.

5. Operating Modes

The rotary hammer features a 3-mode operation selector to match the application:

• Rotation Only: For drilling into wood, metal, or plastic without hammering action.
• Hammering with Rotation: For efficient drilling into concrete, masonry, and stone. This mode combines rotation and hammering for faster material removal.
• Hammering Only: For chipping, chiseling, or scaling applications in concrete or masonry. The bit will not rotate in this mode.

To select a mode, press the red button on the mode selector and rotate the selector to the desired icon.

Figure 3: Close-up of the mode selector dial on the Makita XRH04Z.

6. Maintenance

Regular maintenance ensures optimal performance and extends the tool's lifespan.

• Cleaning: Keep the tool's ventilation openings clean to prevent overheating. Regularly wipe down the tool with a dry cloth.
• Lubrication: Refer to the detailed service manual for specific lubrication requirements.
• Brush Replacement: The tool features easily accessible brush holders for convenient replacement when brushes wear out.

7. Troubleshooting

• Tool stops during operation: The built-in torque limiting clutch is designed to prevent gear damage by automatically disengaging if the bit binds. Release the trigger, clear the obstruction, and restart the tool.
• Reduced performance: Check battery charge level. Ensure the correct operating mode is selected for the material. Inspect drill bit for wear or damage.

8. Specifications

9. Warranty and Support

The Makita XRH04Z Rotary Hammer comes with a 3-year limited warranty. This warranty covers defects in materials and workmanship under normal use. For warranty claims, service, or technical support, please contact Makita customer service or visit their official website. Keep your purchase receipt as proof of purchase.