1. Introduction
This manual provides instructions for the assembly, operation, and maintenance of your WOLTU ergonomic swivel office and vanity stool, Model BS153hgr. This versatile chair features a comfortable velvet upholstered seat, an ergonomic backrest, 360-degree swivel, and adjustable height, making it suitable for various settings such as offices, studies, or vanity areas.

Image 1.1: WOLTU Ergonomic Swivel Stool in a home office setting.
2. Safety Information
- Weight Limit: Do not exceed a maximum weight of 150 kg (330 lbs) on this chair.
- Height Adjustment: Operate the height adjustment mechanism carefully to prevent injury.
- Assembly: Ensure all components are securely fastened before use.
- Stability: Avoid standing on the chair or using it on uneven surfaces.
3. Components
Before assembly, verify that all parts listed below are present in your package:
- Seat with Backrest (1)
- Gas Lift Cylinder (1)
- Star Base (5-star) (1)
- Wheels (5)
- Assembly Kit (screws, tools)
- User Manual (this document)
4. Setup and Assembly
The WOLTU ergonomic swivel stool is designed for easy assembly. A detailed manual and accessory kit are provided to simplify the process. Please follow these general steps:
- Unpack Components: Carefully remove all parts from the packaging and lay them out on a clean, soft surface to prevent scratches.
- Attach Wheels to Base: Insert each of the five wheels into the openings at the end of each arm of the star base until they click securely into place.
- Insert Gas Lift: Place the gas lift cylinder into the central hole of the star base. Important: Remove the protective cap from the gas lift before insertion.
- Attach Seat to Gas Lift: Align the mounting plate under the seat with the top of the gas lift cylinder. Gently lower the seat onto the gas lift, applying slight pressure until it is seated firmly.
- Secure Backrest: If the backrest is separate, attach it to the seat using the provided screws and tools, ensuring it is firm and stable.
- Final Check: Verify that all connections are tight and the chair is stable before first use.

Image 4.1: Product dimensions for assembly reference.
5. Operating Instructions
- Height Adjustment: To adjust the seat height, lift the lever located under the seat while seated to lower the chair, or lift the lever while standing to raise the chair. The seat height is adjustable from 40 cm to 47.5 cm.
- 360° Swivel: The seat is designed to swivel 360 degrees, allowing for easy movement and access to different areas without needing to reposition the entire chair.
- Ergonomic Backrest: The curved backrest is designed to support the natural curve of your spine, promoting a comfortable sitting posture.

Image 5.1: Height adjustment and 360-degree swivel features.

Image 5.2: Ergonomic design of the backrest.
6. Maintenance
- Cleaning Velvet Upholstery: For general cleaning, gently vacuum the velvet fabric to remove dust and debris. For spills, blot immediately with a clean, dry cloth. For stubborn stains, use a mild upholstery cleaner following the product instructions, testing on an inconspicuous area first.
- Cleaning Metal Parts: Wipe metal components with a soft, damp cloth. Avoid abrasive cleaners that may damage the finish.
- Check Fasteners: Periodically check all screws and bolts to ensure they are tight. Retighten as necessary to maintain stability and safety.
- Wheel Care: Keep the wheels free of hair and debris to ensure smooth movement.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair is unstable/wobbly | Loose screws or uneven assembly. | Check and tighten all screws. Ensure the chair is assembled correctly on a flat surface. |
| Difficulty adjusting height | Protective cap still on gas lift; gas lift malfunction. | Ensure the protective cap is removed from the gas lift. If the issue persists, contact customer support. |
| Wheels not rolling smoothly | Debris caught in wheels; damaged wheels. | Clean any hair or debris from the wheels. If wheels are damaged, they may need replacement. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | WOLTU |
| Model Number | BS153hgr |
| Color | Light Grey |
| Material | Velvet (Upholstery), Metal (Frame), Foam (Filling) |
| Product Dimensions (D x W x H) | 35.5 x 43 x 87.5 cm (14 x 17 x 34.4 inches) |
| Seat Height Adjustment | 40 - 47.5 cm (15.7 - 18.7 inches) |
| Seat Depth | 35.5 cm (14 inches) |
| Product Weight | 6.3 kg (13.9 lbs) |
| Maximum Recommended Weight | 150 kg (330 lbs) |
| Special Features | Ergonomic design, Height adjustment, 360° swivel, Durable velvet upholstery |
| Assembly Required | Yes |
| Intended Use | Indoor, Office, Vanity |
9. Warranty and Support
For warranty information, product support, or to inquire about replacement parts, please contact WOLTU customer service. Refer to your purchase documentation for specific contact details or visit the official WOLTU website.





