1. Introduction
Thank you for choosing the TACKLIFE TK5040 Pneumatic Nailer. This 18-gauge 2-in-1 tool is designed for both brad nailing and stapling applications, offering versatility and efficiency for various woodworking and construction projects. Please read this manual thoroughly before operating the tool to ensure safe and effective use. Keep this manual for future reference.
2. Safety Information
Always follow basic safety precautions to reduce the risk of personal injury and damage to the tool. Failure to do so may result in serious injury.
- Wear Eye Protection: Always wear ANSI Z87.1 approved safety goggles or glasses with side shields when operating this tool.
- Wear Hearing Protection: Prolonged exposure to noise from pneumatic tools can cause hearing damage.
- Wear Hand Protection: Use gloves to protect your hands from splinters and other debris.
- Disconnect Air Supply: Always disconnect the air supply before making adjustments, clearing jams, servicing, or when the tool is not in use.
- Maintain a Clean Work Area: Cluttered areas invite accidents. Keep your work area well-lit and clear of obstructions.
- Keep Children Away: Do not allow children or untrained persons to operate this tool.
- Never Point at Yourself or Others: The tool can discharge fasteners unexpectedly.
- Check for Hidden Hazards: Before fastening, check the workpiece for hidden wires, pipes, or other objects.
- Use Correct Air Pressure: Do not exceed the maximum recommended air pressure for the tool.
- Inspect Tool Before Use: Check for damaged parts, loose screws, or any other condition that may affect safe operation.

3. Package Contents
Upon unpacking, ensure all items listed below are present and undamaged. If any parts are missing or broken, please contact customer support.
- TACKLIFE TK5040 Pneumatic Nailer
- Hard Carrying Case
- Safety Goggles
- Lubricating Oil Bottle
- Hex Wrenches (2 pcs)
- Brad Nails (e.g., 50mm, 200 pieces)
- Crown Staples (e.g., 40mm, 200 pieces)

4. Product Features and Components
Familiarize yourself with the key features and components of your TK5040 nailer for optimal performance and safety.

- 360-Degree Multi-Directional Exhaust: Allows you to direct exhaust air away from your face and work surface.
- 1/4 Inch Air Inlet: Standard connection point for your air compressor hose.
- Tool-Free Jam Clearing: Enables quick and easy removal of jammed fasteners without additional tools.
- Magazine: Holds up to 100 fasteners (nails or staples).
- Magazine Level Indicator: Provides a visual cue of the remaining fasteners.
- Movable Cover (Depth Adjustment): Allows for precise control over the fastening depth.
- Tool-Free Release Mechanism: For opening and closing the magazine.
- Rubber Grip: Ergonomically designed for stable and comfortable handling.

5. Specifications
| Feature | Specification |
|---|---|
| Model | TK5040 |
| Fastener Type | 18 Gauge Brad Nails & Crown Staples (2-in-1) |
| Brad Nail Length | 5/8" to 2" (15mm to 50mm) |
| Crown Staple Length | 5/8" to 1-5/8" (15mm to 40mm) |
| Magazine Capacity | 100 Fasteners |
| Operating Pressure | 60-100 PSI (4.1-6.9 bar) |
| Air Inlet | 1/4" NPT |
| Weight | Approx. 1.3 kg (2.87 lbs) |

6. Setup
- Connect Air Compressor:
- Ensure your air compressor is off and the air tank is drained.
- Connect an air hose (not included) to the 1/4" NPT air inlet on the nailer.
- Set the air compressor's regulator to the recommended operating pressure (60-100 PSI).
- Lubricate the Tool:
- Before each use, apply 2-3 drops of the provided lubricating oil into the air inlet. This helps maintain the internal components and prolong tool life.
- Load Fasteners:
- Disconnect the air supply.
- Press the tool-free release mechanism to open the magazine.
- Insert a strip of 18-gauge brad nails or crown staples into the magazine, ensuring the points are facing down.
- Slide the fastener pusher forward until it locks behind the fasteners.
- Close the magazine securely.

7. Operation
- Adjust Depth (if necessary):
- The movable cover on the nose of the tool acts as a depth adjustment. Rotate or slide this cover to achieve the desired fastening depth. Test on a scrap piece of material first.
- Position the Tool:
- Place the nose of the tool firmly against the workpiece where you want to drive a fastener.
- Fire the Tool:
- Squeeze the trigger to drive a fastener. The tool features a sequential firing mechanism for safety.
- Check Magazine Level:
- Monitor the magazine level indicator to know when to reload fasteners.


8. Maintenance
Regular maintenance ensures the longevity and optimal performance of your pneumatic nailer.
- Daily Lubrication: Apply 2-3 drops of pneumatic tool oil into the air inlet before each use.
- Clean the Tool: Keep the tool clean and free of debris. Use a dry cloth to wipe down the exterior.
- Inspect Air Filter: Periodically check the air filter (if accessible) for clogs and clean or replace as needed.
- Store Properly: When not in use, disconnect the air supply and store the tool in its hard carrying case in a dry, secure location.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not fire | No air supply; Low air pressure; Empty magazine; Fastener jam; Trigger/safety mechanism issue. | Check air hose connection; Increase air pressure; Reload fasteners; Clear jam (see below); Inspect trigger/safety. |
| Fasteners jam frequently | Incorrect fastener size; Damaged fasteners; Worn driver blade; Low air pressure. | Use correct 18GA fasteners; Replace damaged fasteners; Contact service for blade replacement; Increase air pressure. |
| Fasteners not driven flush | Low air pressure; Depth adjustment incorrect; Hard material. | Increase air pressure; Adjust depth setting; Consider pre-drilling for very hard materials. |
| Air leaks | Loose fittings; Damaged O-rings/seals. | Tighten air fittings; Contact service for O-ring/seal replacement. |
Clearing a Fastener Jam:
- Disconnect Air Supply: ALWAYS disconnect the air hose from the tool.
- Open Jam Clearing Latch: Use the tool-free jam clearing mechanism on the nose of the tool.
- Remove Jammed Fastener: Carefully remove any bent or jammed fasteners using pliers if necessary.
- Close Latch: Ensure the jam clearing latch is securely closed before reconnecting air.
10. User Tips
Based on general user experience with pneumatic nailers, here are some tips for optimal use:
- Test on Scrap Material: Always test the depth setting and air pressure on a scrap piece of the same material before working on your main project.
- Keep Magazine Full: Avoid running the magazine completely empty, as this can sometimes lead to misfires or jams.
- Consistent Pressure: Apply consistent, firm pressure to the nose of the tool against the workpiece for proper fastener seating.
- Regular Oiling: Do not skip the daily oiling. It's crucial for the internal mechanisms of pneumatic tools.
11. Warranty and Support
TACKLIFE products are manufactured to high-quality standards. For warranty information, technical support, or service inquiries, please refer to the warranty card included with your product or visit the official TACKLIFE website. Please have your model number (TK5040) and purchase date available when contacting support.





