1. Introduction
This manual provides essential instructions for the safe and effective operation, maintenance, and troubleshooting of your Makita TW001GZ 40Vmax Rechargeable Impact Wrench. Please read this manual thoroughly before using the tool to ensure proper handling and to prevent injury or damage.
The Makita TW001GZ is a compact cordless impact wrench designed for heavy-duty applications, powered by a 40V Max Li-ion XGT battery (not included). It features a powerful brushless motor, variable speed control, and an electronic 4-stage impact power selection.
2. Safety Information
Always observe basic safety precautions to reduce the risk of fire, electric shock, and personal injury. Keep this manual for future reference.
- Work Area Safety: Keep the 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: Avoid body contact with earthed or grounded surfaces. Do not expose power tools to rain or wet conditions.
- Personal Safety: Always wear eye protection. Use hearing protection when operating the tool for extended periods. 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 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. Use power tools only with specifically designated battery packs.
3. Package Contents
Upon unpacking, ensure all items are present and undamaged. The standard package for the Makita TW001GZ includes:
- 1 x Makita TW001GZ 40Vmax Rechargeable Impact Wrench
- 1 x Belt Clip
Note: Battery, charger, and case are sold separately and are not included with this tool.
4. Product Overview
Familiarize yourself with the components of your impact wrench.

Image: A close-up view of the Makita TW001GZ impact wrench's head, showing the square drive and the robust housing.
- Square Drive: For attaching impact sockets.
- Brushless Motor: Provides efficient power and longer tool life.
- Trigger Switch: Controls variable speed.
- Forward/Reverse Switch: Changes rotation direction.
- LED Job Light: Illuminates the work area.
- Control Panel: For impact power selection and mode changes.
- Battery Terminal: For connecting the 40Vmax XGT battery.
5. Setup
5.1 Battery Installation
The Makita TW001GZ requires a 40Vmax XGT Li-ion battery (sold separately).
- Ensure the tool is switched off.
- Align the battery pack with the battery housing on the tool.
- Slide the battery into place until it clicks securely.
- To remove, press the release button on the battery and slide it out.
5.2 Attaching Sockets
- Ensure the tool is switched off and the battery is removed.
- Select the appropriate impact-rated socket for your application.
- Push the socket firmly onto the square drive until it locks into place.
- To remove, pull the socket off the square drive.
6. Operating Instructions
6.1 Powering On/Off
To start the tool, pull the trigger switch. To stop, release the trigger switch.
6.2 Variable Speed Control
The tool features variable speed controlled by the trigger. Pressing the trigger further increases the rotational speed and impact frequency.
6.3 Forward and Reverse Rotation
Use the forward/reverse switch located above the trigger to select the desired rotation direction. Ensure the switch is fully engaged in either the forward or reverse position before operating.
6.4 Electronic 4-Stage Impact Power Selection
The TW001GZ offers four impact power settings (Maximum, Hard, Medium, Soft) for various applications. Use the mode selection button on the control panel to cycle through these settings.

Image: A close-up of the impact wrench's control panel, showing the LED indicators for the 4-stage impact power selection and the mode button.
6.5 Full Speed Mode
The variable speed mode can be changed to full speed mode by simply pushing a button. In full speed mode, trigger travel is shorter, allowing full speed to be reached faster.
6.6 Auto-Stop System
The auto-stop system is available in both forward and reverse rotations. The tool stops automatically after the bolt/nut is loosened enough, preventing over-loosening or dropping fasteners.
6.7 LED Job Light
The twin LED job light illuminates the work area. It features pre-glow and after-glow functions for enhanced visibility.

Image: A person wearing gloves operates the Makita TW001GZ impact wrench to tighten or loosen a large bolt on a rail track, demonstrating its application in heavy-duty tasks.
7. Maintenance
Regular maintenance ensures optimal performance and extends the tool's lifespan.
- Cleaning: Regularly clean the tool's ventilation openings to prevent dust accumulation. Use a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Inspection: Periodically inspect the square drive for wear and tear. Check the power cord (if applicable to charger) and battery contacts for damage.
- Storage: Store the tool in a dry, secure place, out of reach of children. Remove the battery pack before storage.
- Lubrication: This tool is designed for maintenance-free operation regarding internal lubrication. Do not attempt to lubricate internal components.
8. Troubleshooting
If you encounter issues with your Makita TW001GZ, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | Battery not charged or improperly installed; Tool malfunction | Charge battery fully and re-install; Ensure battery is securely clicked in; Contact service center if issue persists |
| Reduced power/torque | Low battery charge; Incorrect impact power setting; Worn socket | Recharge battery; Select a higher impact power setting; Replace worn socket |
| Excessive vibration | Loose socket; Damaged square drive; Internal issue | Ensure socket is securely attached; Inspect square drive for damage; Contact service center |
| LED light not working | Faulty LED; Tool malfunction | Contact service center for repair |
For problems not listed here or if solutions do not resolve the issue, please contact Makita authorized service centers.
9. Specifications
Detailed technical specifications for the Makita TW001GZ Impact Wrench:
| Feature | Specification |
|---|---|
| Brand | Makita |
| Model Number | TW001GZ |
| Power Source | Battery Powered (40Vmax Li-ion XGT) |
| Maximum Rotational Speed | 1800 RPM |
| Maximum Tightening Torque | 1800 Nm |
| Nut Busting Torque | 2050 Nm |
| Impacts Per Minute (IPM) | 2500 IPM |
| Voltage | 40 Volts |
| Product Dimensions | 8.54"L x 3.7"W x 11.93"H |
| Item Weight | 2.2 pounds (1000 Grams) |
| Material | Polycarbonate |
| Special Feature | Variable Speed, 4-Stage Impact Power Selection, Auto-Stop System, LED Job Light |
| Included Components | 1 x Belt clip, 1 x Makita TW001GZ |
| UPC | 088381720106 |
10. Warranty Information
The Makita TW001GZ comes with a 1-year manufacturer warranty. An additional 2 years of warranty can be obtained by registering the product within 30 days of purchase.
Important:
- This guarantee does not apply where non-genuine or non-recommended parts or accessories are fitted to the tool.
- The use of non-genuine or incompatible batteries and chargers with Makita tools will invalidate the Makita guarantee for our tools.
11. Support
For further assistance, technical support, or to locate an authorized service center, please visit the official Makita website or contact Makita customer service.
You can also refer to the Makita Store on Amazon for additional product information and resources.
