Amazon Basics Mid-Back Office Computer Task Desk Chair (Model GF-9390M-1) Instruction Manual

Introduction

This manual provides essential instructions for the assembly, operation, and maintenance of your Amazon Basics Mid-Back Office Computer Task Desk Chair. Please read all instructions carefully before assembly and use to ensure proper function and safety.

Safety Information

WARNING:

• Always follow the assembly instructions provided in this user manual to ensure safe use.
• Do not exceed the maximum weight capacity of 275 pounds (124.74 kg).
• Be cautious of the swivel feature to prevent tripping.
• Ensure all screws are fully tightened before use. Periodically check and re-tighten all fasteners.

Package Contents

Verify that all components are present before beginning assembly:

• Seat Cushion
• Back Cushion
• Gas Lift (Cylinder)
• Hardware (Screws, Hex Tool)
• Base (5-point star base)
• Armrests (2)
• Casters (5)
• Mechanism (for seat height and tilt)

Setup and Assembly

Follow these steps to assemble your office chair. An assembly video is provided for visual guidance.

1. Insert Casters: Firmly press each of the five casters (wheels) into the holes at the end of each leg of the 5-point star base. Ensure they are securely seated.
2. Insert Cylinder: Place the gas lift cylinder into the center hole of the assembled base. Ensure the narrower end of the cylinder points upwards.
3. Attach Mechanism to Seat: Align the seat mechanism with the pre-drilled holes on the underside of the seat cushion. Use the provided screws (typically 'A' type) and the hex tool to attach it. Do not fully tighten yet.
4. Place Seat on Cylinder: Carefully place the assembled seat (with mechanism attached) onto the gas lift cylinder. The cylinder should fit snugly into the mechanism's central opening.
5. Attach Armrests: Position the armrests on either side of the seat, aligning them with the pre-drilled holes on both the seat and the backrest. Use the appropriate screws (typically 'B' type) to attach them. Do not fully tighten these screws at this stage.
6. Attach Backrest: Align the backrest with the armrests and the seat. Use the remaining screws (typically 'C' type) to secure the backrest to the armrests.
7. Tighten All Screws: Once all components are loosely assembled, fully tighten all screws using the hex tool. Ensure all connections are firm and secure.
8. Place Screw Caps: Cover any visible screw heads with the provided plastic caps for a finished appearance.

Operating Instructions

Your Amazon Basics office chair offers several adjustable features for personalized comfort:

• Seat Height Adjustment: To raise the seat, lift the lever located under the seat while taking your weight off the chair. To lower the seat, lift the lever while remaining seated. Release the lever at the desired height.
• Tilt Function: The chair features a tilt mechanism. To enable tilting, pull the lever outwards. To lock the chair in an upright position, push the lever inwards.
• Tilt Tension Adjustment: Rotate the round knob located under the seat (usually at the front of the mechanism) to adjust the tension of the tilt. Turn clockwise to increase tension (making it harder to recline) and counter-clockwise to decrease tension (making it easier to recline).
• 360-Degree Swivel: The chair is designed with a 360-degree swivel for easy movement and multi-tasking.
• Rolling Casters: The five-point base with casters allows for smooth-rolling mobility across various floor surfaces.

Maintenance

To maintain the appearance and longevity of your chair:

• Cleaning: Wipe clean with a damp cloth. Avoid harsh chemicals or abrasive cleaners that may damage the faux leather.
• Fasteners: Periodically check all screws and bolts to ensure they remain tight. Re-tighten as necessary to prevent wobbling or instability.
• Casters: Keep casters free of debris (hair, dust, etc.) to ensure smooth rolling.

Troubleshooting

If you encounter issues with your chair, consider the following:

• Chair feels unstable or wobbly: Ensure all assembly screws are fully tightened. Check the gas lift cylinder for proper seating in the base and mechanism.
• Difficulty leaning back or adjusting tilt: Check the tilt tension knob under the seat. Rotate it counter-clockwise to loosen the tension. Ensure the tilt lock lever is disengaged (pulled outwards).
• Screws not fitting or stripping: Ensure you are using the correct screws for each step as indicated in the assembly instructions. Do not overtighten screws during initial assembly; tighten fully only after all components are loosely fitted. If a screw is stripped, contact customer support for replacement parts.
• Casters not rolling smoothly: Inspect casters for trapped debris (hair, lint) and clean them. Ensure they are fully inserted into the base.

Specifications

Warranty and Support

For warranty information or technical support, please refer to the product packaging or contact Amazon Basics customer service directly. Keep your purchase receipt for any warranty claims.