WOLTU BS152
WOLTU Office Chair BS152 Instruction Manual
Model: BS152 | Brand: WOLTU
1. Introduction
Thank you for choosing the WOLTU Office Chair Model BS152. This chair features a unique petal design, velvet upholstery, and is equipped with armrests and wheels for comfort and mobility. It is height-adjustable, making it suitable for various uses such as an office chair, desk chair, or makeup chair. This manual provides detailed instructions for assembly, operation, maintenance, and troubleshooting to ensure safe and optimal use of your new chair.

Image: The WOLTU Office Chair BS152 in a bedroom setting, showcasing its design and color.
2. Safety Instructions
Please read and follow these safety guidelines carefully to prevent injury or damage to the product:
- Weight Limit: Do not exceed the maximum load capacity of 150 kg (approximately 330 lbs).
- Proper Use: Use the chair only for its intended purpose of sitting. Avoid standing on the chair or using it as a step stool.
- Children: Keep children away from the chair during assembly. Supervise children when they are near or using the chair.
- Stability: Ensure all screws and bolts are tightened securely before use. Periodically check and re-tighten fasteners.
- Movement: When moving the chair, ensure no obstacles are in the way of the wheels. Avoid sudden, forceful movements.
- Maintenance: Do not use abrasive cleaners or harsh chemicals on the chair's surfaces. Refer to the maintenance section for cleaning instructions.
3. Package Contents
Before assembly, please verify that all components are present and undamaged. If any parts are missing or damaged, contact WOLTU customer support.
- 1x Office Chair Seat and Backrest Assembly
- 1x Gas Lift Cylinder
- 1x Star Base (5-spoke metal base)
- 5x PU Castors (wheels)
- 1x Seat Mechanism (pre-attached or separate)
- 1x Hardware Pack (screws, Allen wrench)
- 1x Instruction Manual (this document)
4. Assembly Instructions
Assembly is straightforward and requires no additional tools beyond what is provided. Please follow these steps:
- Attach Castors to Base: Turn the star base upside down. Insert each of the five PU castors into the holes at the end of each leg of the star base. Push firmly until they click into place.
- Insert Gas Lift: Place the star base upright. Insert the wider end of the gas lift cylinder into the central hole of the star base. Do not sit on it yet to secure it.
- Attach Seat Mechanism: If the seat mechanism is not pre-attached, align it with the screw holes on the underside of the chair seat. Ensure the lever for height adjustment is facing the front of the chair. Secure it with the provided screws and Allen wrench.
- Connect Seat to Base: Carefully place the chair seat assembly onto the narrow end of the gas lift cylinder. The tapered end of the gas lift will fit into the central hole of the seat mechanism. Press down firmly to secure the connection.

Image: Key components for assembly, including the metal base, gas lift cylinder, and PU castors.
Your WOLTU Office Chair BS152 is now assembled and ready for use.
5. Operating Instructions
The WOLTU Office Chair BS152 is designed for ease of use and comfort. Here's how to operate its main features:
5.1. Height Adjustment
To adjust the seat height:
- To Raise: While standing, pull the lever located under the right side of the seat upwards. The seat will rise automatically. Release the lever when the desired height is reached.
- To Lower: While seated, pull the lever upwards. The seat will lower under your body weight. Release the lever when the desired height is reached.
The seat height can be adjusted between 44 cm and 53.5 cm.
5.2. Swivel Function
The chair features a 360-degree swivel function, allowing for easy rotation without moving the base. Simply rotate the seat to face any direction.
5.3. Mobility
The five PU castors allow for smooth and quiet movement across various floor surfaces, minimizing scratches. To move the chair, simply push or pull it gently.
6. Maintenance and Care
Proper care will extend the life and appearance of your WOLTU Office Chair BS152:
- Cleaning: For general cleaning, wipe the velvet upholstery with a soft, damp cloth. For spills, blot immediately with a clean, dry cloth. Do not rub. For stubborn stains, a mild fabric cleaner suitable for velvet can be used, following the product's instructions.
- Frame Cleaning: Wipe the metal base and gas lift with a soft, dry cloth. Avoid abrasive cleaners.
- Regular Checks: Periodically check all screws and bolts to ensure they are tight. Re-tighten if necessary to maintain stability and safety.
- Avoid Direct Sunlight: Prolonged exposure to direct sunlight can cause the velvet fabric to fade.
- Avoid Sharp Objects: Keep sharp objects away from the upholstery to prevent tears or snags.
7. Troubleshooting
If you encounter any issues with your WOLTU Office Chair BS152, refer to the following common problems and solutions:
- Chair Does Not Adjust Height:
- Ensure the height adjustment lever is fully engaged.
- Check if the gas lift cylinder is properly seated in both the base and the seat mechanism.
- If the gas lift is faulty, it may need replacement. Contact customer support.
- Chair is Unstable/Wobbly:
- Check all assembly screws under the seat and ensure they are tightened securely.
- Ensure the gas lift is firmly inserted into the star base.
- Verify that all five castors are fully inserted into the base legs.
- Wheels Do Not Roll Smoothly:
- Check for any debris (hair, dust, carpet fibers) caught in the castor wheels and remove them.
- Ensure the castors are fully inserted into the base.
- Squeaking Noises:
- Tighten all screws and bolts.
- Apply a small amount of silicone lubricant to moving parts if the noise persists, avoiding contact with upholstery.
If these solutions do not resolve the issue, please contact WOLTU customer support for further assistance.
8. Specifications
Detailed specifications for the WOLTU Office Chair Model BS152:
| Feature | Specification |
|---|---|
| Model Number | BS152 |
| Material | Velvet (Chamois), Metal, Nylon |
| Color | Pink |
| Overall Size (D x W x H) | 46.5 x 55 x 72-81.5 cm (21.65"D x 18.31"W x 28.35"H) |
| Seat Size (W x D) | 41 x 37.5 cm |
| Adjustable Seat Height | 44 - 53.5 cm |
| Base Diameter | 50 cm (approx. 19.7 inches) |
| Load Capacity | 150 kg (approx. 330 lbs) |
| Net Weight | Approx. 7.3 kg (16.1 lbs) |
| Frame Material | Metal |
| Castor Material | PU (Polyurethane) |
| Assembly Required | Yes |

Image: Technical drawing of the WOLTU Office Chair BS152 showing all key dimensions in centimeters.
9. Warranty and Support
WOLTU is committed to providing high-quality products. For any questions, concerns, or issues regarding your WOLTU Office Chair BS152, please contact our customer support team. Please have your purchase information and model number (BS152) ready when contacting support.
For the most up-to-date warranty information and contact details, please visit the official WOLTU website or refer to your purchase documentation.
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