1. Introduction
This manual provides instructions for the assembly, operation, and maintenance of your Yaheetech Ergonomic Office Chair. Please read this manual carefully before assembly and use to ensure proper function and safety.
The Yaheetech Ergonomic Office Chair is designed for comfort and support during desk work. It features adjustable height, a breathable mesh back, and a rocking function to enhance your seating experience. Its sturdy five-point base and durable wheels ensure stability and smooth movement, making it suitable for various indoor environments such as study rooms, offices, and conference rooms.
2. Safety Information
- Ensure all components are present and undamaged before assembly. Do not use if any parts are missing or broken.
- Follow the assembly instructions precisely. Incorrect assembly can lead to instability and injury.
- Do not stand on the chair.
- Do not use the chair for purposes other than its intended use as an office chair.
- Keep children away from the chair during assembly. Small parts may pose a choking hazard.
- The maximum recommended weight capacity for this chair is 136 kg (299 lbs). Do not exceed this limit.
- Regularly check all screws and connections to ensure they are tight. Retighten if necessary.
3. Package Contents
Verify that all the following items are included in your package:
- 1 x Yaheetech Ergonomic Office Chair (disassembled components)
- 1 x Assembly Instruction Manual
- 1 x Accessory Kit (containing screws, tools, etc.)
4. Setup and Assembly
Assembly is required for this office chair. Please follow the steps below carefully.
- Unpack Components: Carefully remove all parts from the packaging and lay them out on a clean, soft surface to prevent scratches.
- Attach Casters to Base: Insert the five silent swivel casters into the holes on the five-star base until they click securely into place.
Image: Silent swivel casters for smooth movement.
- Insert Gas Lift: Place the gas lift cylinder into the center hole of the five-star base. Ensure it is firmly seated.
Image: Key components including the quality gas lift and stable star base.
- Attach Seat Plate to Seat: Secure the seat plate mechanism to the underside of the seat cushion using the provided screws. Ensure the front of the seat plate faces the front of the seat.
- Connect Backrest to Seat: Attach the backrest to the seat cushion using the designated screws. Ensure the ergonomic mesh back is correctly aligned.
Image: Ergonomic mesh backrest providing lumbar support.
- Attach Armrests: Secure the armrests to both the seat and the backrest using the appropriate screws.
Image: Comfortable armrests integrated with the chair design.
- Place Assembled Seat onto Gas Lift: Carefully place the assembled seat and backrest onto the gas lift cylinder. Press down firmly to secure it.
- Final Check: Ensure all screws are tightened and the chair is stable before use.
5. Operating Instructions
Your Yaheetech office chair offers several adjustable features for personalized comfort.
- Adjusting Seat Height:
To raise the seat, lift the lever located under the right side of the seat while taking your weight off the chair. The seat will rise automatically. To lower the seat, lift the same lever while seated. The seat height can be adjusted between 35 cm and 45 cm.
- Using the Rocking Function:
To activate the rocking function, pull out the knob located under the seat. To lock the chair in an upright position, push the knob back in. The backrest angle can be adjusted from 90° to 120° for relaxation.
- Swivel Function:
The chair features a 360-degree swivel function for easy movement and access to your workspace.
- Mobility:
The silent swivel casters allow for smooth and quiet movement across various floor surfaces.
Image: Chair dimensions and adjustable height range (35-45 cm seat height).
6. Maintenance
- Cleaning: Wipe the mesh fabric and plastic parts with a damp cloth and mild detergent. Avoid abrasive cleaners or harsh chemicals.
- Inspection: Periodically check all bolts and screws to ensure they are tight. Retighten as needed to maintain stability and safety.
- Caster Care: Keep casters free of hair and debris to ensure smooth rolling.
- Storage: Store the chair in a dry environment away from direct sunlight and extreme temperatures.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair is wobbly or unstable. | Loose screws or incorrect assembly. | Check all screws and connections; tighten them securely. Refer to assembly instructions. |
| Seat height adjustment not working. | Gas lift not properly installed or damaged. | Ensure the gas lift is fully inserted into the base and seat mechanism. If still not working, contact customer support. |
| Casters not rolling smoothly. | Debris (hair, dust) caught in casters. | Clean casters to remove any obstructions. |
| Rocking function is stuck. | Mechanism might be jammed or knob not fully engaged/disengaged. | Ensure the rocking knob is fully pulled out or pushed in. Check for any obstructions under the seat mechanism. |
8. Specifications
- Brand: Yaheetech
- Model Number: YA-00149231
- Color: Pink
- Material: Steel Alloy, Plastic, Nylon (Mesh)
- Overall Dimensions (D x W x H): 60 cm x 60 cm x 91-100.5 cm
- Adjustable Seat Height: 35 cm - 45 cm
- Backrest Angle: 90° - 120° (Rocking Function)
- Maximum Recommended Weight Capacity: 136 kg (299 lbs)
- Item Weight: 10 kg (22 lbs)
- Assembly Required: Yes
- Certifications: SGS Certified (Report No. SDHL241202405001FT), BIFMA compliant components
9. Warranty and Support
For warranty information or technical support, please contact Yaheetech customer service. Refer to your purchase documentation for specific warranty terms and contact details.
Website: www.yaheetech.com
Please have your model number (YA-00149231) and purchase date ready when contacting support.