1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Kwikset 99090-018 Signature Series SmartCode Electronic Deadbolt. This product offers keyless entry convenience and features SmartKey re-key technology for enhanced security and flexibility. Please read these instructions thoroughly before installation and use to ensure proper function and safety.

Figure 1: Kwikset 99090-018 SmartCode Electronic Deadbolt, exterior view.
2. Safety Information
- Read all instructions completely before installing and operating the lock.
- Protect your User Code and Master Code.
- Restrict access to your lock's interior assembly and regularly check your user settings to ensure they have not been altered without your knowledge.
- Use a soft, non-abrasive cloth for cleaning. Do not use polishes, abrasive cleaners, or chemicals that could damage the finish.
3. Package Contents
Verify that all components are present before beginning installation:
- Exterior Keypad Assembly
- Interior Assembly (with battery cover)
- Deadbolt Latch
- Strike Plate
- Mounting Plate
- Mounting Screws
- Standard Keys
- SmartKey Tool
- 4 AA Batteries (not included)
4. Tools Required
- Phillips Head Screwdriver
- Tape Measure
- Pencil
- Drill (if new holes are required)
- Chisel (if strike plate mortising is required)
5. Installation Instructions
Follow these steps carefully for proper installation. Refer to the detailed diagrams in the included printed manual for visual guidance.
5.1. Prepare the Door
- Measure your door's backset (distance from door edge to center of bore hole) to ensure it is 2-3/8" or 2-3/4". Adjust the latch if necessary by rotating the faceplate.
- Verify the door thickness is between 1-3/8" and 1-3/4".
- Ensure the cross bore hole is 2-1/8" in diameter.
5.2. Install the Latch
- Insert the latch into the door edge, ensuring the
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