1. Introduction
This manual provides detailed instructions for the assembly, operation, maintenance, and troubleshooting of your Waleaf 500lbs Big and Tall Office Chair, Model CJG001. Please read this manual thoroughly before assembly and use to ensure proper function and safety.

Image: The Waleaf 500lbs Big and Tall Office Chair, showcasing its robust design and silent rubber wheels.
2. Safety Information
Adherence to the following safety guidelines is crucial for preventing injury and ensuring the longevity of your chair:
- Weight Capacity: This chair is designed to support a maximum weight of 500 pounds. Do not exceed this limit.
- Assembly: Ensure all components are correctly and securely assembled before using the chair. Refer to the assembly instructions carefully.
- Stability: Use the chair on a flat, stable surface. Avoid standing on the chair or using it as a step stool.
- Adjustments: Make adjustments to the chair's height, recline, and lumbar support while seated and in a controlled manner to prevent sudden movements.
- Maintenance: Regularly inspect the chair for loose screws or damaged parts. Tighten fasteners as needed and replace any damaged components immediately.
- Cleaning: Wipe clean with a damp cloth. Avoid harsh chemicals that may damage the PU leather.
3. Package Contents
Before beginning assembly, verify that all parts are present and undamaged. If any parts are missing or damaged, contact customer support immediately.
- Backrest
- Seat Cushion
- Armrests (2)
- Chair Base (5-star)
- Casters (5)
- Gas Lift Cylinder
- Mechanism Plate
- Hardware Kit (screws, washers, Allen wrench)
4. Assembly Instructions
Assembly typically requires one person and takes approximately 20-30 minutes. An Allen wrench is included in the hardware kit. It is recommended to assemble the chair on a soft, clean surface to prevent scratching components.
- Attach Casters to Base: Insert each of the five casters into the holes at the end of each leg of the chair base. Push firmly until they click into place.
- Insert Gas Lift: Place the gas lift cylinder into the center hole of the chair base.
- Attach Mechanism Plate to Seat: Align the mechanism plate with the pre-drilled holes on the underside of the seat cushion. Ensure the front of the mechanism plate faces the front of the seat. Secure with screws using the provided Allen wrench.
- Attach Armrests to Seat: Attach the armrests to the sides of the seat cushion using the designated screws. Do not fully tighten yet.
- Attach Backrest to Seat and Armrests: Align the backrest with the seat and the armrests. Secure the backrest to the seat and armrests using the remaining screws. Once all screws are in place, fully tighten all screws on the armrests and backrest.
- Connect Seat Assembly to Gas Lift: Carefully place the assembled seat onto the gas lift cylinder, ensuring the tapered end of the gas lift fits securely into the mechanism plate.
Tip: Some users find it easier to attach the backrest to the seat and armrests by laying the seat on its side or back. Ensure all screws are tightened securely, as some reviews mention cables on the bottom coming loose if not properly secured.

Image: The fully assembled Waleaf office chair, ready for use in a professional environment.
5. Operating Instructions
Your Waleaf office chair offers several adjustable features to customize your seating experience for optimal comfort and ergonomic support.
5.1. Height Adjustment
To adjust the chair's height:
- To raise: While standing, pull the height adjustment lever (located on the right side, under the seat) upwards. The seat will rise. Release the lever at the desired height.
- To lower: While seated, pull the height adjustment lever upwards. The seat will lower. Release the lever at the desired height.

Image: Detailed view of the chair's control mechanisms, including the height adjustment lever and lumbar support knob.
5.2. Recline and Tilt Function
The chair's backrest can recline between 90° and 120°. The tilt resistance can also be adjusted.
- To recline: Pull the rocking control knob (located on the left side, under the seat) outwards to unlock the recline function. Lean back to the desired angle. Push the knob inwards to lock the recline position.
- To adjust tilt resistance: Rotate the round knob located at the front-center, under the seat. Turn clockwise to increase resistance (making it harder to recline) and counter-clockwise to decrease resistance (making it easier to recline).

Image: Illustration demonstrating the adjustable recline angles of the chair, from 90 to 120 degrees.
5.3. Adjustable Ergonomic Lumbar Support
The chair features an adjustable lumbar support system to conform to your lower back curve.
- To adjust lumbar support: Rotate the lumbar support knob (located on the right side, under the seat, towards the back). Turn clockwise to increase the lumbar support protrusion and counter-clockwise to decrease it.

Image: The chair's adjustable lumbar support feature, designed to enhance spinal relaxation.
5.4. Silent Rubber Wheels
The premium rubber wheels are designed for quiet movement and to protect various flooring types, including wood and ceramic tiles, from scratches.

Image: A close-up view of the chair's silent rubber wheels and sturdy five-star base, emphasizing durability and floor protection.
6. Maintenance
- Cleaning: Wipe the PU leather surfaces with a soft, damp cloth. For stubborn stains, use a mild soap solution and immediately wipe dry. Avoid abrasive cleaners or solvents.
- Fasteners: Periodically check all screws and bolts to ensure they are tight. Re-tighten as necessary to maintain stability and safety.
- Casters: Keep the casters free of hair, dust, and debris to ensure smooth rolling. Clean them regularly.
- Gas Lift: Do not attempt to disassemble or repair the gas lift cylinder. If it malfunctions, contact customer support for assistance.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair wobbles or feels unstable | Loose screws; uneven floor | Check and tighten all assembly screws. Ensure the chair is on a flat surface. |
| Chair does not adjust height | Gas lift malfunction; lever not engaged | Ensure the height adjustment lever is fully engaged. If the issue persists, the gas lift may need replacement. Contact support. |
| Casters do not roll smoothly | Debris in casters; damaged casters | Remove any hair or debris from the caster wheels. If damaged, casters may need replacement. |
| Recline function is stiff or not working | Tilt tension too high; mechanism locked | Adjust the tilt tension knob counter-clockwise. Ensure the rocking control knob is pulled out to unlock recline. |
8. Specifications

Image: Dimensional drawing of the Waleaf Office Chair, indicating key measurements.
- Model Name: Managerial & Executive Chairs
- Model Number: CJG001
- Brand: Waleaf
- Color: Black
- Product Dimensions (D x W x H): 29.9" x 25.2" x 48"
- Seat Depth: 18 inches
- Item Weight: 61.7 pounds
- Maximum Weight Recommendation: 500 Pounds
- Material: Premium PU Leather, High-Density Foam, Alloy Steel Frame
- Special Features: Adjustable Height, Adjustable Lumbar Support, Arm Rests, Ergonomic Design, Head Support, Silent Rubber Wheels
- Reclining Position Count: 3 (90°, 105°, 120°)
- Surface Recommendation: Hard Floor
- Assembly Required: Yes
9. Warranty and Support
Waleaf is committed to customer satisfaction. If you encounter any issues with your product or require assistance, please contact our customer service professionals. Your pleasure is important to us, and we are available to help.
For support, please refer to the contact information provided at the point of purchase or on the official Waleaf website.
This product is covered by a manufacturer's warranty. Details regarding the warranty period and coverage can be found with your purchase documentation.
