1. Introduction
Thank you for choosing the Yaheetech Mid-Back Mesh Office Chair. This manual provides essential information for the safe assembly, operation, and maintenance of your new office chair. Please read these instructions carefully before use and retain them for future reference.
Image: The Yaheetech Mid-Back Mesh Office Chair, blue color variant.
2. Safety Information
To ensure your safety and prolong the life of your chair, please observe the following:
- Do not stand on the chair.
- Ensure all screws and bolts are tightened securely before use.
- Do not use the chair if any parts are damaged or missing.
- Maximum weight recommendation: 300 Pounds (136 kg).
- Allow for slight variations (approximately ±0.6 inches) in seat height due to manual measurements.
3. Parts List
Before assembly, verify that all components are present and undamaged. Refer to the included illustrated instructions for a detailed visual parts list.
- 1 x Office Chair (disassembled components)
- 1 x Instructions Manual
- Necessary tools and fittings (Allen wrench, screws, etc.)
Image: Exploded view of chair components and step-by-step assembly diagram.
4. Setup and Assembly Instructions
Assembly is designed to be straightforward and typically takes about 15 minutes for an adult. Follow the illustrated instructions provided in the package. Here is a general overview:
- Attach Casters to Base: Insert the five rolling casters into the star base. Ensure they are firmly seated.
- Insert Gas Lift: Place the gas lift cylinder into the center hole of the star base.
- Assemble Backrest and Armrests: Attach the armrests to the backrest using the provided screws. Do not fully tighten until all components are aligned.
- Attach Seat to Backrest/Armrest Assembly: Secure the seat cushion to the assembled backrest and armrests.
- Install Mechanism Plate: Attach the mechanism plate to the underside of the seat cushion using the appropriate screws. Ensure the adjustment levers face the rear of the chair.
- Connect Seat Assembly to Gas Lift: Carefully place the assembled seat onto the gas lift cylinder.
- Final Tightening: Once all parts are aligned, fully tighten all screws.
Video: Official Yaheetech video demonstrating the assembly process for the office chair.
5. Operating Instructions (Adjustments)
Your Yaheetech office chair offers several adjustments for personalized comfort:
- Seat Height Adjustment: Use the lever located under the right side of the seat to raise or lower the chair. Lift the lever while seated to lower, or lift the lever while standing to raise.
- Tilt Function: Pull the lever out to activate the rocking motion. Push it back in to lock the backrest in an upright position.
- Tilt Tension Control: Rotate the round knob located under the seat to adjust the resistance of the tilt mechanism. Turn clockwise for more resistance, counter-clockwise for less.
- Lumbar Support: The curved backrest with integrated lumbar support is designed to align with the spine's natural curve, providing consistent lower back support.
- 360° Swivel and Rolling: The chair features nylon swivel casters and a 360-degree rotating base for effortless mobility.
Video: Official Yaheetech video demonstrating the various adjustable features and ergonomic design of the office chair.
Image: Visual representation of the chair's adjustable height, 90-120 degree rocking, and 360-degree swivel and rolling functions.
6. Maintenance
Regular maintenance helps maintain the chair's condition and functionality:
- Cleaning: Wipe clean with a damp cloth. Avoid harsh chemicals that may damage the mesh or frame.
- Inspection: Periodically check all screws and connections to ensure they are tight. Re-tighten if necessary.
- Caster Care: Keep casters free of debris (hair, dust) to ensure smooth rolling.
7. Troubleshooting
If you encounter any issues with your chair, refer to the following common solutions:
- Chair feels unstable: Check all assembly screws and ensure they are fully tightened. Verify the gas lift is properly seated in the base.
- Casters not rolling smoothly: Inspect casters for trapped debris (hair, lint) and clean as needed.
- Height adjustment not working: Ensure the gas lift lever is fully engaged or disengaged as required. Check for any obstructions.
- Backrest not tilting: Verify the tilt lock lever is disengaged. Adjust the tilt tension knob if the resistance is too high.
If problems persist, please contact Yaheetech customer support.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Yaheetech |
| Model Name | Office Chair (YT-0009655401) |
| Color | Blue |
| Product Dimensions | 24"D x 23.6"W x 38.2"H |
| Back Style | Mesh Back |
| Special Features | Adjustable Height, Arm Rest, Ergonomic, Rolling |
| Maximum Weight Recommendation | 300 Pounds (136 kg) |
| Seat Height | 17.7 Inches |
| Seat Depth | 20.7 Inches |
| Fill Material | Foam |
| Furniture Base Movement | Swivel |
| Assembly Instructions | Included, illustrated instructions with necessary tools and fittings. |
Image: Detailed dimensions of the chair, including height, width, and depth measurements.
9. Warranty and Support
For warranty information, product support, or to purchase replacement parts, please visit the official Yaheetech website or contact their customer service directly. Keep your purchase receipt as proof of purchase.
Yaheetech Customer Service:
- Website: Yaheetech Store on Amazon
- Refer to your product packaging for specific contact details.
