1. Introduction
Thank you for choosing the Youhauchair Upholstered Home Office Chair. This manual provides essential information for the safe assembly, operation, and maintenance of your new chair. Please read it thoroughly before use and retain it for future reference.

Figure 1: Front view of the Youhauchair Upholstered Home Office Chair.
2. Safety Information
Please observe the following safety guidelines to prevent injury or damage to the product:
- Maximum Weight Capacity: The chair is designed to support a maximum weight of 300 lbs (136 kg). Do not exceed this limit.
- Stability: Ensure the chair is stable on a flat, level surface before sitting. When adjusting height or using the rocking function, maintain balance.
- Small Parts: Keep all small parts and packaging materials away from children to avoid choking hazards.
- Assembly: Assemble the chair according to the instructions provided. Do not use power tools for assembly unless explicitly stated, as this may overtighten screws and damage components.
- Maintenance: Regularly check all bolts and screws to ensure they are tight. Retighten as necessary.
3. Package Contents
Verify that all components are present before beginning assembly. If any parts are missing or damaged, please contact customer support.
- Chair Backrest
- Chair Seat with Armrests
- Gas Lift Cylinder
- Star Base
- Casters (5 pieces)
- Mechanism Plate
- Hardware Pack (screws, Allen wrench)
- Instruction Manual
4. Assembly Instructions
Assembly typically takes approximately 15 minutes. Follow these steps carefully:
- Attach Casters to Base: Insert each of the five casters into the holes at the end of the star base until they click securely into place.
- Insert Gas Lift: Place the gas lift cylinder into the center hole of the star base.
- Attach Mechanism Plate: Secure the mechanism plate to the underside of the chair seat using the provided screws. Ensure the lever is positioned correctly for easy access.
- Connect Seat to Gas Lift: Carefully place the assembled chair seat onto the gas lift cylinder, ensuring it is centered and stable.
- Attach Backrest: Align the backrest with the seat and secure it using the remaining screws. Tighten all screws firmly but do not overtighten.

Figure 2: Key components of the chair, including the gas lift, casters, and base.
5. Operating Instructions
Your Youhauchair office chair offers several adjustable features for personalized comfort.
5.1. Height Adjustment
To adjust the seat height:
- To raise the seat: While standing, pull the control lever located under the right side of the seat upwards. The seat will rise automatically. Release the lever at the desired height.
- To lower the seat: While seated, pull the control lever upwards. The seat will lower. Release the lever at the desired height.
The seat height can be adjusted within a range of 20.47 inches to 24.41 inches (52 cm to 62 cm).

Figure 3: Illustration of 360-degree swivel and seat height adjustment.
5.2. Rocking Function
The chair features a rocking function for enhanced comfort and flexibility.
- To activate/deactivate rocking: Push the control lever (the same lever used for height adjustment) inwards to lock the chair in an upright position, or pull it outwards to enable the rocking motion.
- Adjusting Rocking Tension: A tension control knob is located under the front of the seat. Turn the knob clockwise to increase tension (making it harder to rock) or counter-clockwise to decrease tension (making it easier to rock).
The rocking function allows for a tilt range of 90-120 degrees.

Figure 4: Details of the rocking function lever and tension control knob.
5.3. Swivel Function
The chair is equipped with 5 quiet casters that allow for a full 360-degree swivel motion, providing ease of movement around your workspace.
6. Maintenance
Proper care will extend the life of your chair.
- Cleaning: Spot clean the upholstered fabric as needed. Use a mild detergent and a damp cloth. Avoid harsh chemicals or abrasive cleaners.
- Hardware Check: Periodically check all screws and bolts to ensure they are tight. Retighten if any looseness is detected.
- Caster Care: Keep casters free of hair and debris to ensure smooth rolling.
7. Troubleshooting
If you encounter any issues with your chair, please refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair does not adjust height. | Gas lift cylinder malfunction or lever not engaged. | Ensure the lever is fully pulled up. If the issue persists, contact customer support for a replacement gas lift. |
| Chair wobbles or feels unstable. | Loose screws or uneven floor. | Check and tighten all assembly screws. Ensure the chair is on a flat, level surface. |
| Casters do not roll smoothly. | Debris caught in casters. | Remove any hair, dust, or debris from the caster wheels. |
| Rocking function is too stiff or too loose. | Tension control knob setting. | Adjust the tension control knob located under the seat. Turn clockwise to increase tension, counter-clockwise to decrease. |
8. Specifications
Detailed specifications for the Youhauchair Upholstered Home Office Chair:
| Feature | Detail |
|---|---|
| Brand | Youhauchair |
| Model Number | YC-7007HDG |
| Color | Grey/High Back |
| Product Dimensions (D x W x H) | 21.65"D x 22.44"W x 38.98"H |
| Maximum Weight Recommendation | 300 Pounds (136 kg) |
| Item Weight | 33 Pounds (15 kg) |
| Back Style | High Back |
| Special Feature | Adjustable Height, Rocking Function, 360-degree Swivel |
| Product Care Instructions | Spot Clean |
| Fill Material | Foam |
| Leg Style | Wheels (Casters) |
| Surface Recommendation | Hard Floor |
| Tilting | Yes (90-120 degrees) |

Figure 5: Dimensional overview of the chair.
9. Warranty and Support
Youhauchair provides a 1-year after-sales service for this product. If you encounter any issues such as missing parts, product damage, or other concerns, please contact our customer support team.
We aim to respond to all inquiries within 24 hours.
For support, please visit the Youhauchair Store on Amazon or refer to your purchase documentation for direct contact information.





