1. Introduction
This manual provides comprehensive instructions for the safe and efficient operation, maintenance, and troubleshooting of your Virutex FC116U Lock Mortiser. The FC116U is a specialized machine designed for creating precise slots on doors and other elements for fitting locks. Its portable design ensures ease of use and transport, making it suitable for various woodworking projects and professional carpentry tasks.
2. Product Overview
2.1. Key Features
- Designed for quick and precise mortising of lock slots on doors.
- Portable and easy to transport for on-site work.
- Includes features for handles insertion, dust collection, and rubber protection to prevent surface damage.
- Equipped with a locking bar for secure positioning during operation.
- Allows mortising on doors that are already hung.
2.2. Components
The Virutex FC116U Lock Mortiser comes with the following main components:
- Lock mortiser machine body
- Tool UT16I (cutting tool/bit)
- Handles insert
- Dust collector attachment
- Rubber protection pads
- Locking bar
- Various sized bits (e.g., 18mm, 22mm, 24mm)
- Wrenches for adjustment
- Carrying case

Figure 1: The Virutex FC116U Lock Mortiser main unit. This image displays the complete assembly of the lock mortiser, including the motor, frame, and adjustment mechanisms.
3. Safety Information
Always prioritize safety when operating power tools. Read and understand all safety warnings and instructions before using the Virutex FC116U Lock Mortiser. Failure to follow these instructions may result in electric shock, fire, and/or serious injury.
- Wear appropriate personal protective equipment (PPE), including safety glasses, hearing protection, and gloves.
- Ensure the workpiece is securely clamped before beginning any operation.
- Keep hands and loose clothing away from moving parts.
- Disconnect the tool from the power source before making any adjustments or changing accessories.
- Use the correct bit size and type for the material and desired mortise.
- Maintain a clean and well-lit work area.
4. Setup
Proper setup is crucial for achieving precise results and ensuring safe operation. Follow these steps to prepare your FC116U Lock Mortiser:
- Unpacking and Inspection: Carefully remove all components from the carrying case. Inspect for any damage.
- Mounting the Unit:
- Position the mortiser on the edge of the door where the lock will be installed.
- Use the clamping feet and locking bar to securely fasten the unit to the door. Ensure the rubber protection pads are in place to prevent surface damage.
- Adjusting Length:
- Measure the length of the lock body that will be inserted into the door.
- Adjust the mortiser's guides to match this length, ensuring the cutting area corresponds to the lock dimensions.
- Adjusting Depth:
- Measure the depth of the lock body.
- Set the depth stop on the mortiser to prevent cutting too deep into the door.
- Installing the Cutting Bit:
- Select the appropriate size cutting bit (e.g., 18mm, 22mm, 24mm) for your lock.
- Securely insert the bit into the chuck of the mortiser's motor unit.

Figure 2: The Virutex FC116U Lock Mortiser securely mounted on a door edge, ready for operation. This view highlights the clamping mechanism and the tool's stable positioning.

Figure 3: A close-up view of the depth adjustment mechanism on the Virutex FC116U, showing the scale for precise setting.
Video 1: Virutextools FC116U Tutorial. This video demonstrates the complete setup and operation process for the Virutex FC116U Lock Mortiser, including adjustments and actual mortising.
5. Operating Instructions
Once the mortiser is securely set up, proceed with the following steps to create the lock mortise:
- Power On: Connect the mortiser to a suitable power outlet.
- Initiate Cut: Gently push the motor unit forward, allowing the cutting bit to engage with the door material.
- Perform Mortise: Move the motor unit smoothly along the guides, allowing the bit to cut the desired slot. Apply steady, even pressure.
- Clear Debris: The integrated dust collector helps manage wood chips. Periodically clear any accumulated debris to maintain visibility and prevent clogging.
- Complete Cut: Once the desired length and depth are achieved, retract the motor unit.
- Power Off: Disconnect the tool from the power source.

Figure 4: The Virutex FC116U Lock Mortiser actively cutting a mortise into a door, demonstrating the tool's operational use.

Figure 5: A hand inserting a lock into a precisely cut mortise, illustrating the final result of using the mortiser.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your Virutex FC116U Lock Mortiser.
- Cleaning: After each use, clean the unit thoroughly to remove all wood dust and debris. Use a brush or compressed air.
- Bit Care: Inspect cutting bits for sharpness and damage. Replace dull or damaged bits to ensure clean cuts and prevent strain on the motor.
- Lubrication: Periodically lubricate moving parts and guide rods with a light machine oil to ensure smooth operation.
- Storage: Store the mortiser in its original carrying case in a dry, clean environment to protect it from dust and moisture.
7. Troubleshooting
If you encounter issues with your FC116U Lock Mortiser, refer to the following common troubleshooting tips:
- Poor Cut Quality:
- Check if the cutting bit is sharp and undamaged.
- Ensure the unit is securely clamped to the door, preventing movement during operation.
- Verify that the depth and length adjustments are correctly set.
- Tool Not Starting:
- Check the power connection and ensure the outlet is functional.
- Inspect the power cord for any damage.
- Excessive Vibration/Noise:
- Ensure all fasteners are tight.
- Check the cutting bit for proper installation and balance.
- Inspect for any foreign objects obstructing moving parts.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Virutex |
| Model Name | FC116U |
| Special Feature | Portable |
| Lock Type | Mortise Lock |
| Item Dimensions (L x W x H) | 21 x 24 x 17 inches |
| Material | Rubber (for protection pads) |
| Recommended Uses | Door Lock Installation, Woodworking Projects, Home Renovations, Professional Carpentry |
| Color | Blue, Silver |
| Number of Pieces | 1 (main unit) |
| Included Components | Lock mortiser machine, tool UT16I |
| Item Weight | 54 Pounds |
| Control Method | Touch |
9. Warranty and Support
For customer support inquiries, please refer to the seller's contact information or the product's official website. Specific warranty details may vary and are typically provided at the point of purchase or within the product packaging.
The product is sold by Virutextools, which also handles shipping and customer support. For returns, a 30-day easy return policy is generally available.





