1. Introduction
This manual provides essential instructions for the safe and effective use of your KIMO 1/2 Cordless Impact Wrench, Model 3618. This tool is designed for various fastening and loosening tasks, offering high torque and variable speed control. Please read this manual thoroughly before operating the tool and keep it for future reference.
Figure 1.1: KIMO 1/2 Cordless Impact Wrench
2. General Safety Information
WARNING: Read 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.
- Always wear eye protection (safety glasses or goggles) and hearing protection when operating power tools.
- 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.
- Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.
- Avoid accidental starting. Ensure the switch is in the off-position before connecting to a battery pack, picking up, or carrying the tool.
- Use the correct tool for your application. Do not force the tool.
- Disconnect the battery pack from the tool before making any adjustments, changing accessories, or storing power tools.
- 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.
- Maintain power tools and accessories. Check for misalignment or binding of moving parts, breakage of parts, and any other condition that may affect the power tool’s operation.
- Use the power tool, accessories, and tool bits in accordance with these instructions, taking into account the working conditions and the work to be performed.
3. Package Contents
Your KIMO 1/2 Cordless Impact Wrench package includes the following items:
- 1 x Cordless Impact Wrench
- 2 x 4.0Ah Batteries (20V)
- 1 x Charger
- 4 x Sockets (17mm, 19mm, 21mm, 24mm)
- 1 x 5-inch Extension Bar
- 1 x Belt Buckle
- 1 x Toolbox
Figure 3.1: Complete Package Contents
4. Setup
4.1. Battery Charging and Installation
Before first use, ensure the battery is fully charged. The 4.0Ah battery typically recharges in approximately 1 hour.
- Connect the charger to a power outlet.
- Slide the battery pack onto the charger until it clicks into place. The charger indicator lights will show the charging status.
- Once fully charged, remove the battery from the charger.
- To install the battery onto the impact wrench, align the battery with the tool's base and slide it in until it locks securely.
- To remove the battery, press the release button on the battery pack and slide it out.
Video 4.1: Demonstrating battery installation and removal on the KIMO Impact Wrench.
4.2. Socket Installation
The impact wrench features a hog ring anvil for quick and secure socket changes.
- Select the appropriate impact-rated socket (17mm, 19mm, 21mm, or 24mm) for your task.
- Push the socket firmly onto the 1/2-inch square drive anvil until it snaps into place. The hog ring will hold the socket securely.
- To remove the socket, pull it off the anvil with a firm tug.
Figure 4.2: Installing a socket onto the 1/2-inch square drive.
5. Operating Instructions
5.1. Power On/Off and Safety Lock
The tool is equipped with a safety lock to prevent accidental starts.
- To activate the tool, push the lock-off button (usually located above the trigger).
- Press the trigger switch to start the tool. The built-in LED light will illuminate the work area.
- Release the trigger to turn off the tool. The LED light will remain on for approximately 20 seconds after release.
Figure 5.1: Safety Lock and Trigger Operation
5.2. Speed Adjustment (3-Speed Modes)
The impact wrench offers three adjustable speed modes for versatile applications.
- Low Speed (0-2000 RPM): Ideal for delicate tasks or when precise control is needed, such as tightening smaller bolts and nuts.
- Medium Speed (0-3000 RPM): Suitable for general fastening and loosening, like engine work.
- High Speed (0-4000 RPM): Provides maximum power for heavy-duty applications, such as removing rusted truck nuts or working on axles.
Use the speed selection button on the tool to cycle through the modes. A gear display panel indicates the current setting.
Figure 5.2: 3-Speed Mode Adjustment
5.3. Forward/Reverse Switch and Auto-Stop Function
The tool features a forward/reverse switch and an advanced auto-stop function in reverse mode.
- To tighten fasteners, set the switch to the forward (F) position.
- To loosen fasteners, set the switch to the reverse (R) position.
- In reverse mode, the auto-stop function will automatically stop the tool once the fastener is loosened, preventing it from falling off or over-torquing.
Figure 5.3: Forward and Reverse Operation
Figure 5.4: Reverse Auto-Stop Function
5.4. Using the Extension Bar
The included 5-inch extension bar allows access to fasteners in tight or recessed areas.
- Attach the extension bar to the impact wrench's anvil.
- Then, attach the desired socket to the end of the extension bar.
Figure 5.5: Using the 5-inch Extension Bar
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your impact wrench.
- Cleaning: Keep the tool's ventilation openings clear and free of debris. Use a soft, damp cloth to clean the exterior. Do not use harsh chemicals or abrasive cleaners.
- Battery Care: Store batteries in a cool, dry place away from direct sunlight. Do not store batteries in a discharged state for extended periods.
- Storage: When not in use, store the impact wrench and its accessories in the provided toolbox in a dry, secure location, out of reach of children.
- Inspection: Periodically inspect the tool for any signs of damage, loose screws, or worn parts. If any issues are found, contact customer support for assistance.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | Battery not charged or improperly installed; Safety lock engaged; Faulty switch. | Charge battery and ensure it's securely installed; Disengage safety lock; Contact customer support if switch is faulty. |
| Reduced power or torque | Low battery charge; Incorrect speed setting; Worn or damaged socket. | Recharge battery; Select a higher speed mode; Replace socket if damaged. |
| Excessive vibration or noise | Loose components; Damaged anvil or internal parts. | Check for loose parts and tighten if possible; Discontinue use and contact customer support. |
| Battery not charging | Charger not plugged in; Faulty battery or charger. | Ensure charger is properly connected; Test with another battery/charger if available; Contact customer support. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | KIMO |
| Model Number | 3618 |
| Max Torque | 1200 N·m (900 ft-lbs) |
| Max Speed | 4000 RPM |
| Speed Settings | 3 (Low: 0-2000 RPM, Medium: 0-3000 RPM, High: 0-4000 RPM) |
| Motor Type | Brushless |
| Anvil Size | 1/2 inch Square Drive (Hog Ring) |
| Battery Voltage | 20V |
| Battery Capacity | 4.0Ah |
| Charging Time | Approx. 1 hour |
| Item Weight | 3.6 pounds |
| Item Length | 7.5 inches |
| Material | Metal |
| Included Components | Impact Wrench, 2x 4.0Ah Batteries, Charger, 4x Sockets (17/19/21/24mm), 5" Extension Bar, Belt Buckle, Toolbox |
9. Warranty and Customer Support
KIMO provides a 1-year warranty covering manufacturing defects from the date of purchase. For any questions, issues, or warranty claims, please contact KIMO Customer Support.
- Customer Support: 24/7 Friendly Customer Support is available. Refer to your product packaging or the KIMO official website for contact details.
- Warranty Claims: Keep your proof of purchase for any warranty claims. The warranty covers manufacturing defects only.