1. Product Overview
The FelixKing FK918-W Ergonomic Office Chair is designed to provide comfort and support for extended periods of sitting. It features a breathable mesh back, adjustable lumbar support, flip-up armrests, and a stable rolling base.

Image 1.1: Overview of the FelixKing FK918-W Ergonomic Office Chair.
2. Setup and Assembly
Assembly of the FelixKing FK918-W office chair typically takes approximately 15 minutes. Please follow the steps below and refer to the provided installation video for visual guidance.
2.1 Assembly Steps
- Attach the casters to the chair base.
- Insert the gas lift cylinder into the center of the chair base.
- Connect the seat mechanism to the bottom of the seat cushion.
- Attach the backrest to the seat mechanism.
- Place the assembled seat and backrest onto the gas lift cylinder.

Image 2.1: Visual guide for chair assembly steps.
2.2 Installation Video
Video 2.2: Official FelixKing Office Chair Installation Video (Model 918-W).
3. Operating Instructions
The FelixKing FK918-W chair offers several adjustable features to customize your seating experience.
3.1 Seat Height Adjustment
To adjust the seat height, locate the lever under the right side of the seat. Lift the lever to raise the seat. To lower the seat, remain seated and lift the lever. Release the lever at the desired height.
3.2 Backrest Tilt and Rocking Function
The chair features a tiltable and rocking backrest. Use the lever on the left side of the seat to lock or unlock the tilt function. Adjust the tilt tension by rotating the round knob located under the seat. Turn clockwise to increase tension (less rocking) and counter-clockwise to decrease tension (more rocking).

Image 3.1: Controls for rocking function, tilt tension, and height adjustment.
3.3 Adjustable Lumbar Support
The lumbar support can be adjusted vertically by 5 cm (2 inches) to provide optimal support for your lower back. Gently push or pull the lumbar support pad to your preferred position.

Image 3.2: Dynamic lumbar support adjustment.
3.4 Flip-Up Armrests
The armrests can be flipped up by 90 degrees to save space or flipped down for arm support. This feature allows the chair to be easily stored under a desk.

Image 3.3: Flip-up armrests for space-saving.
3.5 Swivel Function and Casters
The chair features a 360-degree swivel function for easy movement. The silent PU casters are designed to protect various floor surfaces.

Image 3.4: 360-degree swivel capability.
Video 3.5: Demonstration of adjustable features including height, tilt, and armrests.
4. Maintenance
To ensure the longevity and appearance of your FelixKing office chair, follow these simple maintenance guidelines:
- Cleaning: Wipe clean with a damp cloth. Avoid harsh chemicals or abrasive cleaners, which can damage the mesh fabric or metal components.
- Inspection: Periodically check all screws and bolts to ensure they are tight. Retighten if necessary to maintain stability and safety.
- Casters: Keep casters free of debris (hair, dust) to ensure smooth rolling and prevent floor damage.
5. Troubleshooting
If you encounter any issues with your FelixKing office chair, refer to the following common troubleshooting tips:
- Chair Sinks or Does Not Stay Up: This usually indicates an issue with the gas lift cylinder. Contact customer support for a replacement.
- Chair Wobbles: Ensure all assembly screws are securely tightened. Check that the chair base is properly seated on the gas lift.
- Casters Not Rolling Smoothly: Inspect casters for trapped debris (hair, lint) and clean them. If casters are damaged, replacements may be needed.
- Squeaking Noises: Apply a small amount of silicone lubricant to moving parts or joints, especially where metal components meet.
For persistent issues, please refer to the Warranty and Support section.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | FelixKing |
| Model Number | FK918-W |
| Color | Light Blue |
| Material | Mesh, Metal, Foam |
| Product Dimensions (D x W x H) | 27.6"D x 27.6"W x 40"H |
| Item Weight | 29.5 Pounds |
| Maximum Weight Recommendation | 300 Pounds |
| Adjustable Features | Adjustable Lumbar, Back Support, Ergonomic, Flip-up Arm Rest, Seat Height, Tiltable Backrest |
| Swivel | 360 Degrees |
| Casters | Silent PU Casters |

Image 6.1: Product dimensions and weight capacity.
7. Warranty
FelixKing provides a 5-year warranty for this office chair. This warranty covers manufacturing defects and significant quality issues. If you experience any quality problems, please contact FelixKing after-sales service for assistance. Necessary parts will be replaced as per the warranty terms.
8. Customer Support
For any questions, concerns, or warranty claims, please contact FelixKing customer support:
- Email: service@felixking7.com
- Phone: +1 (269) 397-4226
Alternatively, you can contact us through your Amazon account:
- Login to your Amazon Account.
- Go to 'Your Orders'.
- Find the relevant order for your FelixKing chair.
- Click 'Contact Seller'.

Image 8.1: FelixKing customer contact details.







