1. 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. 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 dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.
- Power 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 the battery pack 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.
- 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. Use of any other battery packs may create a risk of injury and fire.
2. Product Overview
The KIMO Cordless Impact Wrench QM-3609 is designed for efficient fastening and loosening tasks, offering powerful performance and versatile features.
Key Features:
- High Torque & Brushless Motor: Delivers a maximum torque of 400 N·m, significantly improving work efficiency. Equipped with a powerful brushless motor for stable, efficient operation and extended tool life.
- Variable Speed & Forward/Reverse Rotation: Features stepless speed adjustment from 0-2600 rpm (min-1) based on trigger pressure. Includes two speed modes: High-efficiency (0-2600rpm) and Power-saving (0-1600rpm). A convenient forward/reverse switch allows for easy change of rotation direction.
- Three Operating Modes: Easily switch between Auto-stop mode, High-efficiency mode, and Power-saving mode with a single button. The Auto-stop mode prevents nuts from flying off when loosening.
- Large Capacity Battery & LED Light: Comes with a high-performance 2000mAh lithium battery that fully charges in 90 minutes, supporting long working hours. A 4-stage LED indicator displays battery status. An integrated LED light illuminates the work area for use in dark conditions.
- Comprehensive Accessories & Versatile Applications: Includes the main unit, 2000mAh battery, rapid charger, extension adapter, storage bag, 3-inch extension rod, and 7 sockets (8/10/12/14/17/19/21mm). Suitable for various tasks such as car repair, tire changes, home maintenance, furniture assembly, DIY projects, and stage construction.
Product Components:

The image above displays the KIMO Cordless Impact Wrench QM-3609 along with its standard accessories, including the battery, charger, various sockets, and a carrying bag.
3. Setup
3.1 Battery Installation and Charging
- Charging the Battery: Connect the rapid charger to a power outlet. Insert the 2000mAh lithium battery into the charger. The LED indicators on the battery will show the charging progress. A full charge typically takes 90 minutes.
- Installing the Battery: Align the charged battery pack with the base of the impact wrench. Slide the battery into place until it clicks securely. Ensure it is firmly seated to prevent accidental detachment during operation.
- Checking Battery Level: Press the battery verification button on the battery pack. The 4-stage LED display will indicate the remaining power level.
3.2 Attaching Sockets

The KIMO Impact Wrench features a 1/2" square drive, compatible with standard sockets. To attach a socket:
- Select the appropriate socket size (e.g., 8mm, 10mm, 12mm, 14mm, 17mm, 19mm, 21mm) for your task.
- Push the socket firmly onto the 1/2" square drive until it locks into place.
- To remove, pull the socket off the drive while pressing the release button (if present).
4. Operating Instructions
4.1 Power and Torque

The KIMO Impact Wrench provides a maximum torque of 400 N·m and a maximum rotation speed of 2600 rpm, suitable for demanding applications.
4.2 Variable Speed Control

The tool features a stepless variable speed trigger. The rotation speed (0-2600 rpm) can be adjusted by varying the pressure applied to the trigger. This allows for precise control depending on the task.
4.3 Forward/Reverse Rotation

To change the rotation direction, push the forward/reverse switch lever located on both sides of the main unit. Push left for forward rotation (tightening nuts) and right for reverse rotation (loosening nuts). The center position acts as a safety lock, preventing accidental activation.
4.4 Operating Modes

Press the mode switch button on the cordless impact wrench to select one of three operating modes:
- Auto-stop Mode: This mode is active only during reverse rotation. When a nut is significantly loosened, the tool automatically stops, preventing the nut from flying off and reducing the risk of loss or injury.
- High-efficiency Mode: Provides a rotation speed of 0-2600 rpm (min-1). Speed is controlled by the trigger pressure.
- Power-saving Mode: Provides a rotation speed of 0-1600 rpm (min-1). This mode helps conserve battery power and is active only during forward rotation.
4.5 Brushless Motor Technology

The QM-3609 is equipped with a powerful brushless motor. This technology offers higher efficiency, better control, and a longer lifespan compared to traditional brushed motors, as it eliminates friction and wear from carbon brushes.
4.6 Product Videos
KIMO Impact Wrench in Use
This video demonstrates the KIMO Impact Wrench in action, showing its effectiveness in loosening and tightening lug nuts on a vehicle wheel.
KIMO Cordless Impact Wrench Features
This video highlights various features of the KIMO Cordless Impact Wrench, including its power, battery, and ease of use for different applications.
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your KIMO Impact Wrench.
- Cleaning: Keep the tool's ventilation openings clean and free from dust and debris. Use a soft, damp cloth to wipe down the exterior. Do not use harsh chemicals or abrasive cleaners.
- Battery Care: Store batteries in a cool, dry place away from direct sunlight and extreme temperatures. Do not store fully discharged batteries for extended periods. Charge them periodically if not in use.
- Accessory Inspection: Regularly inspect sockets and other accessories for wear or damage. Replace worn or damaged accessories to ensure safe and effective operation.
- Storage: When not in use, store the impact wrench and its accessories in the provided storage bag in a dry, secure location out of reach of children.
6. Troubleshooting
If you encounter issues with your KIMO Impact Wrench, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start. | Battery not charged or improperly installed. | Ensure battery is fully charged and securely inserted. |
| Reduced power or torque. | Low battery charge; incorrect mode selected. | Recharge battery; switch to High-efficiency mode if more power is needed. |
| Socket does not attach securely. | Debris in drive; worn socket or drive. | Clean the drive; replace worn components. |
| Tool overheats. | Prolonged heavy use; blocked ventilation. | Allow tool to cool down; clear ventilation openings. |
If the problem persists after attempting these solutions, please contact KIMO customer support.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | KIMO |
| Model Number | QM-3609 |
| Max Torque | 400 N·m |
| Max Rotation Speed | 2600 rpm |
| Power Source | Battery Powered |
| Voltage | 20 Volts (DC) |
| Battery Type | Lithium-ion |
| Battery Capacity | 2000mAh |
| Item Weight | 3.07 Kilograms |
| Package Dimensions | 29.4 x 18.4 x 17.2 cm |
| Head Style | Fixed Square |
8. Warranty & Support
For warranty information, technical support, or service inquiries regarding your KIMO Cordless Impact Wrench QM-3609, please refer to the documentation included with your product or visit the official KIMO website. Keep your purchase receipt as proof of purchase.
You can also visit the KIMO Store on Amazon for more information and product support.





