Introduction
This user manual provides essential information for the assembly, operation, maintenance, and troubleshooting of your new Dowinx Big and Tall Office Chair. Please read this manual thoroughly before assembly and use to ensure proper function and safety. This chair is designed to provide enhanced comfort and ergonomic support for extended periods of sitting, featuring a double-layered backrest, individual pocket springs, and flexible adjustability.

Figure 1: Front view of the Dowinx Big and Tall Office Chair in white PU leather.
Safety Information
Warning: This chair requires assembly. Always follow the assembly instructions carefully to ensure safe and proper installation. The chair has a weight capacity of 52.2 pounds. Exceeding this capacity may result in instability or damage to the chair. Always use the chair within its intended weight limit for safe operation.
- Keep all parts and packaging materials away from children.
- Ensure all screws and bolts are tightened securely before use. Periodically check and re-tighten as needed.
- Do not stand on the chair or use it as a step stool.
- Avoid exposing the chair to direct sunlight or extreme temperatures to prevent material degradation.
Product Features
- Double-Layered Thickened Backrest: Features a dual-layer design with a soft cushioning layer and a supportive layer for enhanced comfort and ergonomic support during extended sitting.
- Individual Pocket Springs: The seat cushion incorporates pocket springs, similar to those found in sofas. Each spring operates independently, providing adaptive elasticity and support by conforming to your body's weight for a luxurious and comfortable experience.

Figure 2: Visual comparison illustrating the benefits of pocket springs and breathable materials in the seat cushion.
- Flexible Adjustability: Offers a versatile reclining range from 90° to 135°, suitable for various activities from working to relaxing. Adjustable padded armrests allow for personalized height settings.

Figure 3: Demonstration of the chair's reclining capability, showing a range of motion from upright to a relaxed position.
- PU Leather or Tech Cloth Options: Available in classic PU leather for a sleek look or breathable tech cloth for a softer feel, catering to different style and comfort preferences.
- Durability and Longevity: Constructed with high-quality materials and robust design to ensure sustained performance and withstand daily use.
- Integrated Footrest: For enhanced relaxation, the chair includes a retractable footrest.
Setup and Assembly
Your Dowinx Office Chair requires assembly. Please ensure all components are present before beginning. Refer to the detailed assembly instructions and diagrams included in the product packaging for step-by-step guidance. It is recommended to assemble the chair on a soft, clean surface to prevent damage to the chair or your floor.
- Unpack all components and verify against the parts list provided in the assembly guide.
- Attach the casters to the chair base.
- Insert the gas lift cylinder into the center of the base.
- Assemble the seat and backrest according to the instructions, ensuring all bolts are securely fastened.
- Attach the assembled seat and backrest to the gas lift cylinder.
- Install the armrests and any other accessories.
- Once assembled, test all functions and ensure stability before regular use.

Figure 4: Side view of the chair, illustrating its structure and the retractable footrest mechanism.
Operating Instructions
Recline Function
To recline the backrest, locate the recline lever on the side of the chair (typically on the right). Pull the lever up to unlock the backrest, lean back to your desired angle (between 90° and 135°), and then push the lever down to lock the position. To return to an upright position, pull the lever up again and lean forward.
Armrest Adjustment
The padded armrests are adjustable in height. Locate the button or lever on the side of each armrest. Press or lift it to unlock the armrest, then move the armrest up or down to your preferred height. Release the button/lever to lock the armrest in place.

Figure 5: Illustration of the adjustable armrest mechanism, allowing users to customize height for optimal comfort.
Footrest Operation
To extend the footrest, pull it out from underneath the seat. To retract it, push it back in until it is fully stored under the seat.
Lumbar Support
The chair's design, including the double-layered backrest, provides integrated lumbar support. Position yourself comfortably against the backrest to utilize its ergonomic contouring for spinal alignment.

Figure 6: Diagram illustrating how the chair's design supports the natural curve of the spine for improved posture and comfort.
Maintenance
Regular maintenance will extend the life and appearance of your chair.
- Cleaning: Wipe clean with a damp cloth. For PU leather, use a mild leather cleaner if necessary. For tech cloth, a gentle fabric cleaner can be used. Avoid harsh chemicals or abrasive cleaners.
- Hardware Check: Periodically check all bolts and screws to ensure they are tight. Re-tighten as needed to maintain stability and safety.
- Caster Care: Clean casters regularly to remove dust and debris that can impede smooth movement.
- Avoid Overloading: Do not exceed the chair's stated weight capacity of 52.2 pounds.
Troubleshooting
If you encounter issues with your chair, refer to the following common solutions:
- Chair is Wobbly:
- Ensure all assembly bolts are securely tightened.
- Check if the chair is on an even surface.
- Gas Lift Not Functioning:
- Verify that the gas lift lever is correctly engaged.
- Ensure no obstructions are preventing the lift from moving freely.
- Casters Not Rolling Smoothly:
- Remove any hair or debris wrapped around the caster wheels.
- Ensure casters are properly inserted into the base.
- Recline Mechanism Stuck:
- Check if the recline lever is fully disengaged or engaged.
- Ensure no objects are obstructing the mechanism.
If problems persist, please contact Dowinx customer support for assistance.
Specifications
| Feature | Detail |
|---|---|
| Brand | Dowinx |
| Model Name | LS-66BG104 |
| Color | White |
| Product Dimensions | 20.1"D x 22.8"W x 45.3"H |
| Item Weight | 52.2 pounds |
| Material | PU Leather (or Tech Cloth option), Sponge Fill |
| Back Style | Open Back, Double-Layered Thickened Backrest |
| Special Feature | Foot Rest, Adjustable Armrests, Pocket Spring Cushion |
| Reclining Range | 90° to 135° |
| Recommended Uses | Office, Reading, Relaxing, Video Game |
| Product Care | Wipe Clean |
Warranty and Support
Dowinx offers a one-year repair service and after-sales support for this product. For any inquiries, technical assistance, or warranty claims, please contact Dowinx customer service through the official channels provided at the time of purchase or on the Dowinx website.
For further assistance, you may visit the Dowinx Store: Dowinx Official Store



