Cylindrical and mortise lever locksets differ primarily in their design, installation, and application. Cylindrical locksets are more common and easier to install. They fit into a hole drilled through the door and are secured with a latch mechanism. The lock body is cylindrical, hence the name, and it typically requires two holes: one for the lock body and another for the latch. These locks are often used in residential and light commercial applications due to their straightforward installation and cost-effectiveness. Mortise locksets, on the other hand, are more complex and robust. They require a pocket, or mortise, to be cut into the edge of the door to accommodate the lock body. This makes installation more labor-intensive and typically requires professional expertise. Mortise locks are known for their durability and strength, making them suitable for high-traffic areas and commercial settings. They offer enhanced security features and can accommodate a variety of functions, such as deadbolts and latch bolts within the same lock body. In terms of aesthetics, mortise locks often provide a more seamless and integrated look, as they sit flush with the door edge. Cylindrical locks, while available in various styles, may not offer the same level of design integration. Overall, the choice between cylindrical and mortise lever locksets depends on factors like security needs, installation complexity, and budget. Mortise locks are preferred for their strength and versatility in commercial applications, while cylindrical locks are favored for their ease of installation and cost-effectiveness in residential settings.

1. **Gather Tools and Materials**: Screwdriver, drill, hole saw, chisel, tape measure, pencil, and the lever lockset kit. 2. **Prepare the Door**: Ensure the door is the correct thickness (usually 1 3/8 to 1 3/4 inches) and has the appropriate backset (distance from the door edge to the center of the hole, typically 2 3/8 or 2 3/4 inches). 3. **Mark the Door**: Use the template provided with the lockset to mark the door for the face bore (usually 2 1/8 inches in diameter) and the edge bore (usually 1 inch in diameter). 4. **Drill Holes**: Drill the face bore hole through the door using a hole saw. Drill the edge bore hole using a spade bit or hole saw. 5. **Chisel for Latch Plate**: Insert the latch into the edge bore and trace around the latch plate. Chisel out a recess so the latch plate sits flush with the door edge. 6. **Install Latch**: Insert the latch into the edge bore and secure it with screws. 7. **Install Lever Handles**: Insert the exterior lever through the face bore, ensuring the spindle goes through the latch. Attach the interior lever, aligning it with the exterior lever. Secure both levers with screws. 8. **Install Strike Plate**: Close the door to mark the latch position on the door frame. Drill a hole for the latch bolt. Chisel a recess for the strike plate on the door frame and secure it with screws. 9. **Test the Lockset**: Ensure the lever operates smoothly and the latch engages properly with the strike plate. 10. **Adjust if Necessary**: Make any necessary adjustments to ensure proper alignment and operation.

Yes, lever locksets can be rekeyed. Rekeying involves changing the internal components of the lock so that it operates with a new key while maintaining the existing hardware. This process is typically performed by a locksmith or someone with knowledge of lock mechanisms. The steps generally include: 1. **Removing the Lockset**: The lockset is removed from the door to access the cylinder. 2. **Disassembling the Cylinder**: The cylinder is taken apart to access the pins or wafers inside. 3. **Replacing Pins/Wafers**: The existing pins or wafers are replaced with new ones that correspond to the cuts of the new key. This is done using a rekeying kit specific to the lock brand and model. 4. **Reassembling the Cylinder**: Once the new pins are in place, the cylinder is reassembled and tested with the new key to ensure smooth operation. 5. **Reinstalling the Lockset**: The lockset is then reinstalled on the door. Rekeying is a cost-effective way to change the keying of a lock without replacing the entire lockset. It is commonly done for security reasons, such as when moving into a new home, after losing a key, or when keys have been distributed to unauthorized individuals. Not all lever locksets are designed to be easily rekeyed, so it's important to check the manufacturer's specifications or consult with a locksmith. Some modern locksets offer user-friendly rekeying features that allow homeowners to rekey the lock themselves without professional assistance.

Yes, lever locksets are generally ADA compliant. The Americans with Disabilities Act (ADA) requires that door hardware be operable with one hand and not require tight grasping, pinching, or twisting of the wrist. Lever handles meet these criteria because they can be operated with a simple push or pull motion, making them accessible to individuals with disabilities, including those with limited hand strength or dexterity. To ensure full compliance, lever locksets should be installed at the correct height, typically between 34 and 48 inches above the finished floor, as specified by the ADA. Additionally, the force required to operate the lever should not exceed 5 pounds, allowing easy access for all users. It's important to note that while lever locksets are generally compliant, the specific design and installation must adhere to all ADA guidelines to ensure accessibility. This includes considerations for the shape and size of the lever, as well as the overall door and lockset configuration.

Schlage, Kwikset, Yale, Baldwin, and Emtek are considered some of the best brands for lever locksets.

1. **Identify the Problem**: Determine if the handle is loose due to a loose screw, worn-out parts, or a misalignment. 2. **Gather Tools**: You may need a screwdriver (Phillips or flathead, depending on the screw type), Allen wrench, and possibly a replacement screw or set screw. 3. **Remove the Handle**: Locate the set screw on the lever handle. It is usually on the side or bottom. Use the appropriate screwdriver or Allen wrench to loosen and remove the set screw. 4. **Inspect the Components**: Check the spindle, screws, and other internal components for wear or damage. Replace any worn-out parts if necessary. 5. **Tighten the Screws**: If the screws are loose, tighten them. For a set screw, align the handle properly on the spindle and tighten the set screw securely. 6. **Reattach the Handle**: Place the handle back onto the spindle, ensuring it is aligned correctly. Insert and tighten the set screw. 7. **Test the Handle**: Check the handle’s operation by turning it to ensure it moves smoothly and is securely attached. 8. **Adjust if Necessary**: If the handle is still loose, repeat the process, ensuring all components are correctly aligned and tightened. 9. **Lubricate (Optional)**: Apply a small amount of lubricant to the moving parts if the handle feels stiff. 10. **Final Check**: Ensure the handle is functioning correctly and securely attached. Make any final adjustments as needed.

The standard backset for lever locksets is typically 2-3/8 inches (60mm) or 2-3/4 inches (70mm).