Model: ZD-U-01
Thank you for choosing the Ulecoce Front Door Lock Set. This manual provides detailed instructions for the installation, operation, and maintenance of your new door lock. Please read this manual thoroughly before beginning installation to ensure proper function and safety. Keep this manual for future reference.

Image: The Ulecoce Front Door Lock Set, featuring two sleek black door handles.
Before installation, please verify that all components are present and undamaged:

Image: An illustration highlighting the key features and components of the Ulecoce door lock set, including installation hardware.
Before you begin, ensure you have the necessary tools: Phillips head screwdriver, tape measure, pencil, and a drill (if creating new holes).
For visual guidance, refer to the installation diagrams typically found on the product packaging or a dedicated installation guide.

Image: Ulecoce lock installed on an orange door.

Image: Ulecoce lock installed on a blue door.

Image: Ulecoce lock installed on a white door.
Ensure the door is fully closed before attempting to lock it.
Regular maintenance helps ensure the longevity and smooth operation of your Ulecoce Front Door Lock Set.
| Problem | Possible Cause | Solution |
|---|---|---|
| Key is difficult to turn or remove. | Dirt in keyway, worn key, or misaligned cylinder. | Apply graphite lubricant to keyway. Try a spare key. Check for proper alignment during installation. |
| Latch bolt does not retract or extend smoothly. | Misalignment with strike plate, dirt in mechanism, or loose screws. | Check strike plate alignment. Clean and lubricate the latch mechanism. Tighten mounting screws. |
| Door does not close or latch properly. | Door frame or door itself has shifted, strike plate misalignment. | Adjust the strike plate position. Check door hinges for looseness. |
| Knob/lever is loose or wobbly. | Loose mounting screws. | Tighten all visible mounting screws. |
| Brand | Ulecoce |
| Model Number | ZD-U-01 |
| Color | Black |
| Product Dimensions | 1"L x 1"W (Note: This might be a placeholder or simplified dimension, actual product dimensions may vary for full assembly) |
| Handle Type | Knob/Lever |
| Included Components | Installation Hardware |
| Item Weight | 1 pound |
| UPC | 768383681161 |
Ulecoce products are designed for durability and reliability. For specific warranty information, please refer to the warranty card included with your product or visit the official Ulecoce website.
If you encounter any issues or have questions regarding your Front Door Lock Set, please contact Ulecoce Customer Support:
Please have your model number (ZD-U-01) and purchase date ready when contacting support.
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