Introduction
Thank you for choosing the UOCFYK Ergonomic Mesh Swivel Task Chair. This manual provides essential information for the proper assembly, operation, and maintenance of your new chair. Please read these instructions carefully before use to ensure optimal performance and longevity of the product.

Image: Front view of the UOCFYK Ergonomic Mesh Swivel Task Chair, showcasing its black mesh back, padded seat, and fixed armrests.
Safety Information
Please observe the following safety guidelines to prevent injury or damage to the product:
- Always ensure the chair is fully assembled and all bolts are tightened before use.
- Do not exceed the maximum weight capacity of 250 lbs (approximately 113 kg).
- Be cautious when moving the chair on uneven surfaces or while using the casters to avoid tipping or injury.
- Keep children away from the chair during assembly and adjustment to prevent accidents.
- Avoid standing on the chair or using it as a ladder.
Package Contents
Before beginning assembly, please verify that all components are present and undamaged. If any parts are missing or damaged, contact customer support.
- (A) Backrest: 1 unit
- (B) Seat: 1 unit
- (C) Armrests: 1 Left (L), 1 Right (R)
- (D) Mechanism: 1 unit
- (E) Gas Lift: 1 unit
- (F) Base: 1 unit
- (G) Legs: 5 units
- (H) Casters: 5 units
- (I) Bolts: 4 units (for armrests to backrest)
- (J) Bolts: 6 units (for armrests to seat)
- (K) Bolts: 10 units (for legs to base)
- (L) Bolts: 4 units (for mechanism to seat)
- (M) Wrench: 1 unit
Setup and Assembly
Follow these steps for quick and easy assembly. An assembly video is provided for visual guidance.
- Attach Legs to Base: Turn the Base (F) upside down. Insert the 5 Legs (G) one by one into the Base. Use the Wrench (M) to secure them with 10 Bolts (K).
- Install Casters: Press the 5 Casters (H) into the holes at the end of each Leg (G).
- Insert Gas Lift: Insert the Gas Lift (E) into the center hole of the assembled Base (F).
- Attach Armrests to Backrest: Using the Wrench (M), install the Armrests (C) (marked 'L' for Left and 'R' for Right) to both sides of the Backrest (A) with 4 Bolts (I). Tighten these bolts to 50% initially.
- Attach Armrests to Seat: Turn the Seat (B) upside down. Ensure the 'FRONT' marking on the Seat is correctly oriented. Using the Wrench (M), attach the Armrests (C) to the Seat (B) with 6 Bolts (J). Tighten these bolts to 100%.
- Attach Mechanism to Seat: Ensure the 'FRONT' direction of the Mechanism (D) and Seat (B) are the same. Using the Wrench (M), attach the Mechanism (D) to the Seat (B) with 4 Bolts (L).
- Final Assembly: Using the Wrench (M), fully tighten (100%) the 4 Bolts (I) previously installed on the Armrests (C) to the Backrest (A). Align the hole on the Mechanism (D) with the Gas Lift (E) and press the chair down until it is fully secured.
Video: Detailed assembly instructions for the UOCFYK Ergonomic Mesh Swivel Task Chair, showing step-by-step installation of components.
Operating Instructions
Your UOCFYK Ergonomic Mesh Swivel Task Chair is designed for comfort and adjustability. Familiarize yourself with its features for an optimal seating experience.
Adjusting Seat Height
Locate the pneumatic adjustment lever under the seat. Pull the lever upwards to raise the seat. To lower the seat, remain seated and pull the lever upwards. Release the lever at your desired height.

Image: Illustration of the chair's adjustment mechanisms, including seat height, rocking mode, and tension control.
Rocking Mode
To activate the rocking function, pull the lever located under the seat outwards. Push the lever inwards to lock the chair in an upright position. The tension of the rocking motion can be adjusted by turning the round knob located under the seat.
Ergonomic Support
The chair features an ergonomically designed backrest with integrated lumbar support to conform to the natural curve of your spine, promoting a healthy sitting posture. The mesh back provides breathability, while the high-density sponge seat offers comfortable support.

Image: Close-up of the chair's breathable mesh backrest, designed for comfort and airflow.
Mobility
The chair is equipped with smooth, multi-directional casters for effortless movement across various floor surfaces, including tile, wood, and carpet. The 360° swivel function allows for easy rotation.
Video: Demonstration of the chair's ergonomic features, including seat height adjustment, rocking function, and comfortable seating.
Maintenance
Regular maintenance helps prolong the life and appearance of your chair.
- Cleaning: For the mesh back and fabric seat, use a soft cloth dampened with mild soap and water. Avoid harsh chemicals or abrasive cleaners.
- Casters: Periodically check casters for hair or debris that may hinder smooth movement. Clean as needed.
- Bolts: Every few months, check all bolts and screws to ensure they are securely tightened. Retighten if necessary.
- Gas Lift: The gas lift is a sealed unit and requires no maintenance. If it malfunctions, contact customer support.
Troubleshooting
If you encounter any issues with your chair, refer to the following common problems and solutions:
- Chair does not adjust height: Ensure the gas lift lever is fully engaged. If the issue persists, the gas lift may need replacement.
- Chair wobbles: Check that all bolts, especially those connecting the legs to the base and the mechanism to the seat, are securely tightened. Ensure the chair is on a flat, even surface.
- Casters do not roll smoothly: Inspect casters for trapped debris (hair, lint, etc.) and clean them. Ensure the casters are properly inserted into the leg holes.
- Squeaking noises: Tighten all bolts. A small amount of silicone spray on moving parts (excluding the gas lift) may help, but avoid over-lubrication.
If these steps do not resolve the issue, please contact UOCFYK customer support.
Specifications
| Feature | Detail |
|---|---|
| Brand | UOCFYK |
| Model Number | C-3718-BLACK |
| Color | Black |
| Product Dimensions | 18.5"D x 20.08"W x 41.54"H |
| Seat Depth | 18.5 inches |
| Chair Backrest Width | 20.08 Inches |
| Style | Fixed Handrail |
| Material | Mesh (Back), Sponge (Seat), Metal (Frame) |
| Maximum Weight Capacity | 250 Pounds |
| Special Feature | Ergonomic, Swivel, Adjustable Height, Rocking Mode |
| Item Weight | 25 pounds |

Image: Detailed diagram illustrating the various dimensions of the chair.
Warranty and Support
For warranty information, please refer to the documentation provided at the time of purchase or contact the seller directly. UOCFYK is committed to customer satisfaction.
If you have any questions, require assistance with assembly, or need to report a missing/damaged part, please contact UOCFYK customer support through your purchase platform or the official brand website.