1. Introduction
Thank you for purchasing the Dowinx LS-66WB01-01C-PD Ergonomic Office Chair. This chair is designed to provide optimal comfort and support for extended periods of sitting, whether for work, gaming, or relaxation. Its advanced ergonomic features, including adjustable headrest, lumbar support, and a unique pocket coil seat, ensure a superior seating experience. Please read this manual carefully before assembly and use to ensure proper setup and to maximize the chair's lifespan.
2. Product Overview
The Dowinx LS-66WB01-01C-PD chair combines aesthetic design with high functionality, making it suitable for various environments. Key features include:
- Ergonomic Design: Engineered to perfectly integrate human engineering principles with comfort, supporting the body's natural curves.
- Adjustable Headrest: Features 6cm height adjustment and 50° swivel for optimal head and neck support.
- Adjustable Lumbar Support: Can be adjusted vertically and horizontally to maintain the natural S-curve of your spine.
- Pocket Coil Seat: The unique W-shaped seat cushion incorporates pocket coils, providing balanced support and distributing pressure evenly, similar to a high-end sofa.
- Breathable Mesh Material: High-quality mesh ensures excellent ventilation, preventing discomfort during hot weather.
- 140° Reclining Function: Allows for seamless adjustment from an upright working posture to a relaxed reclining position.
- Retractable Ottoman: Integrated footrest for ultimate relaxation during recline.
- Linked Armrests: Armrests move in conjunction with the recline, providing continuous support for your arms.
- Silent PU Casters: Smooth and quiet movement, gentle on floors.
- Sturdy Steel Base: Ensures high stability and durability for long-term use.

Figure 2.1: The Dowinx LS-66WB01-01C-PD Ergonomic Office Chair in a typical office environment, showcasing its sleek design and features.

Figure 2.2: An exploded view highlighting the various adjustable components and ergonomic design elements of the chair.
3. Assembly Instructions
The Dowinx LS-66WB01-01C-PD chair is designed for easy assembly. A dedicated tool and a detailed instruction manual (in both Japanese and English) are included to guide you through the process. Assembly can typically be completed by one person.
3.1. Before You Begin
- Unpack all components and verify against the parts list provided in the included manual.
- Ensure you have enough clear space for assembly.
- Keep all screws and small parts organized to prevent loss.
3.2. Step-by-Step Assembly
Refer to the detailed diagrams and instructions in the physical manual for precise steps. General steps include:
- Attach the casters to the five-star base.
- Insert the gas lift cylinder into the center of the base.
- Attach the seat plate mechanism to the bottom of the seat cushion.
- Connect the backrest to the seat cushion.
- Place the assembled seat and backrest onto the gas lift cylinder.
- Install the headrest and lumbar support, adjusting them as needed.

Figure 3.1: All chair components neatly arranged, ready for assembly. This image helps in identifying all parts before starting the assembly process.
4. Operating Instructions
This section details how to use the various adjustable features of your Dowinx office chair to achieve optimal comfort and support.
4.1. Seat Height Adjustment
To adjust the seat height, locate the lever on the right side beneath the seat. Pull the lever upwards while sitting on the chair to lower it, or stand up and pull the lever upwards to raise it. Release the lever at your desired height.
4.2. Reclining Function (90° to 140°)
The chair offers a reclining range from 90 degrees (upright) to 140 degrees (fully reclined). To recline, pull the lever on the left side of the seat upwards and lean back. Release the lever to lock the backrest in your preferred angle. To return to an upright position, lean forward slightly while pulling the lever.

Figure 4.1: Visual representation of the chair's reclining capabilities, from 90 degrees to a full 140-degree recline, suitable for both work and relaxation.
4.3. Headrest Adjustment
The 3D headrest can be adjusted for both height and angle to perfectly fit your head and neck. To adjust the height, grasp the headrest and slide it up or down (up to 6cm). To adjust the angle, pivot the headrest forward or backward (up to 50°). Find the position that provides optimal support for your posture.

Figure 4.2: Close-up of the adjustable headrest, illustrating its vertical and angular movement for personalized neck and head support.
4.4. Lumbar Support Adjustment
The movable lumbar support can be adjusted both vertically and horizontally to provide precise support for your lower back. Use the knob on the side of the backrest to adjust the depth (forward/backward) of the lumbar support. To adjust the height (up/down), slide the lumbar support mechanism along the backrest. This allows you to maintain the natural S-curve of your spine.

Figure 4.3: Illustration of the dynamic lumbar support, demonstrating how it can be adjusted to fit individual body types and postures for optimal spinal alignment.
4.5. Retractable Ottoman
For enhanced relaxation, especially when reclining, pull out the integrated ottoman located beneath the seat. Extend it fully to support your legs and feet. Push it back in when not in use to save space.

Figure 4.4: A user demonstrating the retractable ottoman, which provides comfortable leg support when the chair is reclined.
4.6. Linked Armrests
The armrests are designed to move in conjunction with the backrest when you recline. This ensures that your arms remain comfortably supported regardless of your reclining angle. No separate adjustment is needed for the armrests during recline.

Figure 4.5: The linked armrests provide continuous support as the chair reclines, adapting to the user's posture.
5. Maintenance
Regular maintenance will help prolong the life and maintain the appearance of your Dowinx office chair.
- Cleaning:
- For mesh and plastic parts, wipe with a soft, damp cloth. Avoid abrasive cleaners.
- For stubborn stains, use a mild soap solution and wipe dry immediately.
- Casters: Periodically check casters for hair or debris that may hinder smooth movement. Clean as necessary.
- Fasteners: Occasionally check all screws and bolts to ensure they are tight. Re-tighten if loose to maintain stability.
- Avoid Direct Sunlight: Prolonged exposure to direct sunlight can cause fading or damage to the materials.
- Weight Limit: Do not exceed the recommended weight limit of 135 kg (297 lbs) to prevent damage and ensure safety.
6. Troubleshooting
If you encounter any issues with your chair, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair does not adjust height. | Gas lift cylinder malfunction or lever not engaged. | Ensure the height adjustment lever is fully pulled. If the issue persists, the gas lift may need replacement. Contact customer support. |
| Chair wobbles or feels unstable. | Loose screws or uneven floor. | Check and tighten all assembly screws. Ensure the chair is on a flat, even surface. |
| Casters do not roll smoothly. | Debris (hair, dust) caught in casters. | Turn the chair over and remove any debris from the caster wheels. |
| Backrest does not recline or lock. | Recline mechanism stuck or lever not engaged. | Ensure the recline lever is fully engaged. Check for any obstructions in the mechanism. |
If the problem persists after attempting these solutions, please contact Dowinx customer support for further assistance.
7. Product Specifications
| Feature | Detail |
|---|---|
| Brand | Dowinx |
| Model Number | LS-66WB01-01 |
| Color | Black |
| Material | Mesh |
| Product Dimensions | 51 cm (Depth) x 53 cm (Width) x 130 cm (Height) |
| Package Dimensions | 72 x 51 x 26 cm |
| Product Weight | 16.5 kg |
| Package Weight | 18 kg |
| Maximum Recline Angle | 140° |
| Headrest Adjustment | Height adjustable (6cm), Angle adjustable (50°) |
| Lumbar Support Adjustment | Height and Depth adjustable |
| Seat Type | Pocket Coil Seat (W-shaped) |
| Casters | Silent PU Casters |
| Base Material | Steel |
| Recommended Height | 145-180 cm (Limit: 190 cm) |
| Recommended Weight | 40-80 kg (Limit: 135 kg) |

Figure 7.1: Detailed dimensional drawing of the Dowinx office chair, including height, width, and depth measurements, along with recommended user height and weight.
8. Warranty and Support
Dowinx is committed to providing excellent after-sales service to ensure your long-term satisfaction with our products. We stand behind the quality and durability of the LS-66WB01-01C-PD Ergonomic Office Chair.
- After-Sales Service: If you encounter any defects or have questions regarding your purchased product, please do not hesitate to contact us. We are dedicated to providing prompt and effective support.
- Contact Information: Please refer to the contact details provided on the product packaging or the official Dowinx website for customer service inquiries.
Your satisfaction is our priority. We encourage you to reach out for any assistance needed.