Yaheetech Office Chair Model YA592506 Instruction Manual

Introduction

Thank you for choosing the Yaheetech Office Chair, Model YA592506. This manual provides essential information for the safe assembly, operation, and maintenance of your new office chair. Please read these instructions carefully before assembly and use, and retain them for future reference.

Image: Front view of the Yaheetech Office Chair, Model YA592506, in black with mesh back and foldable armrests.

Important Safety Information

• Do not stand on the chair. This chair is designed for sitting only.
• Ensure the chair is correctly assembled according to the instructions before any use.
• Do not exceed the maximum weight capacity of 136 kg (300 lbs).
• Keep children away from moving parts during assembly and adjustment.
• Regularly check all bolts, screws, and knobs to ensure they are tight. Retighten if necessary.
• Use the chair on a flat, stable surface.

Assembly Instructions

Your Yaheetech Office Chair requires assembly. A detailed assembly instruction manual and an accessory kit are included in the package. Please follow the step-by-step guide provided with your product for proper assembly.

General Assembly Tips:

• Unpack all components and verify against the parts list in the included manual.
• Assemble the chair on a soft, clean surface to prevent scratches.
• Do not fully tighten all screws until the entire chair is assembled, then tighten them securely.
• If you encounter any difficulties, refer to the included assembly guide or contact customer support.

Image: Diagram showing various components of the office chair, including the mesh backrest, seat, armrests, gas lift, and star base with wheels.

Operating Instructions

1. Seat Height Adjustment

To adjust the seat height (range: 45-55 cm):

• To raise the seat: While standing, pull the 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 lever located under the right side of the seat upwards. The seat will lower. Release the lever at the desired height.

2. Backrest Recline and Tilt Function

The backrest can recline up to 120° and features a tilt function.

• To recline: Pull the lever (usually the same one for height adjustment, or a separate one) outwards to unlock the tilt mechanism. Lean back to the desired angle. Push the lever inwards to lock the backrest in place.
• Tilt Tension Adjustment: Rotate the round knob located under the front of the seat to adjust the tension of the tilt mechanism. Turn clockwise to increase tension (making it harder to recline) and counter-clockwise to decrease tension (making it easier to recline).

Image: Illustration demonstrating the backrest tilt movement and the tilt tension adjustment knob located beneath the seat.

3. Foldable Armrests (90° Retractable)

The armrests can be lifted up to 90° to save space or allow closer access to your desk.

• To lift armrests: Simply grasp an armrest and pivot it upwards until it locks into the vertical position.
• To lower armrests: Gently pull the armrest outwards slightly and pivot it downwards until it rests in the horizontal position.

Image: A three-panel sequence illustrating the armrests being lifted from a horizontal to a vertical position, demonstrating the space-saving feature.

Image: A split image showing the chair in use with armrests down for support and with armrests lifted to allow the chair to slide under a desk, illustrating space-saving.

4. Adjustable Lumbar Support

The lumbar support can be adjusted by 4 cm to conform to your back's natural curve.

• To adjust: Gently push or pull the lumbar support pad on the backrest to move it up or down to your preferred position.

Image: A diagram highlighting the adjustable lumbar support feature on the chair's backrest, showing its position relative to the spine.

5. Swivel Casters

The chair is equipped with 360° swivel casters for easy movement across your workspace.

• Ensure the casters are clean and free of debris for smooth rolling.

Maintenance

• Cleaning: Wipe the chair with a soft, damp cloth. For stubborn stains, use a mild soap solution and dry thoroughly. Avoid harsh chemicals or abrasive cleaners.
• Inspection: Periodically check all screws, bolts, and connections. Tighten any loose fasteners to ensure stability and safety.
• Casters: Clean casters regularly to remove hair, dust, and debris that may hinder movement.
• Gas Lift: The gas lift is a sealed unit and does not require maintenance. Do not attempt to disassemble it.

Troubleshooting

Specifications

Image: Front and side view diagrams with detailed measurements of the chair's height, width, and depth, including seat height range and maximum load capacity.

Warranty and Support

For warranty information, spare parts availability, or technical support, please refer to the documentation included with your purchase or contact Yaheetech customer service directly. Contact details can typically be found on the manufacturer's website or your purchase receipt.

Spare parts availability information is currently unavailable through this document.