Introduction
Thank you for choosing the Flash Furniture Hercules Series Executive Office Chair. This manual provides detailed instructions for the assembly, operation, and maintenance of your new chair. Designed for comfort and durability, this ergonomic high-back swivel office chair is suitable for extended use in various professional environments.

Image: The Hercules Series Executive Office Chair, showcasing its design and presence in an office environment.
Setup and Assembly
Your Flash Furniture Hercules Series Executive Office Chair is designed for straightforward assembly. All necessary tools are included. Please follow these general steps for assembly:
- Unpack Components: Carefully remove all parts from the packaging and lay them out on a clean, flat surface. Verify all components are present against the parts list (not provided in this manual, refer to packaging).
- Attach Casters to Base: Insert the five casters into the openings at the end of each leg of the chair base. Push firmly until they click into place.
- Insert Gas Lift: Place the gas lift cylinder into the center hole of the assembled chair base.
- Attach Armrests to Seat: Secure the armrests to the underside of the seat cushion using the provided screws and Allen wrench. Ensure they are oriented correctly.
- Attach Backrest to Seat: Connect the backrest to the seat assembly using the designated mounting points and screws.
- Connect Seat Assembly to Gas Lift: Carefully place the assembled seat and backrest onto the gas lift cylinder, ensuring the center mechanism aligns with the top of the gas lift.

Image: Chair dimensions (34"D x 32.75"W x 44.5-48"H) for reference during setup and placement.
Operating Instructions
This chair offers several adjustable features to customize your seating experience for optimal comfort and support.
1. Seat Height Adjustment
To adjust the seat height, locate the pneumatic height adjustment lever on the right side, beneath the seat. While seated, pull the lever up to lower the seat. To raise the seat, stand up and pull the lever up. Release the lever at your desired height.
2. Armrest Height Adjustment
The armrests are height adjustable. Press the button located on the side of each armrest post and move the armrest up or down to your preferred height. Release the button to lock it in place. This allows you to support your shoulders and neck effectively.
3. Lumbar Support Adjustment
The chair features a pressurized lumbar support knob. Rotate this knob, typically found on the side of the chair, to increase or decrease the amount of lumbar support provided by the backrest. Adjust it to relieve pressure on your lower back.
4. Tilt and Tilt Tension Adjustment
- Tilt Lock: To enable or disable the rocking/reclining motion, use the tilt lock mechanism lever, usually located on the left side beneath the seat. Push it in to lock the chair in an upright position, or pull it out to allow tilting.
- Tilt Tension: Adjust the resistance of the tilt mechanism by turning the tilt tension adjustment knob, located at the front center beneath the seat. Turn clockwise to increase tension (requiring more force to recline) or counter-clockwise to decrease tension (allowing easier recline).

Image: Key adjustable features of the chair, including armrests, lumbar support knob, and tilt/height levers.

Image: Detailed view of the armrest and control levers for height and tilt adjustments.
Video: An official product video demonstrating the various adjustable features of the Hercules Series Executive Office Chair, including lumbar support, armrest height, and seat height adjustments.
Maintenance
To ensure the longevity and appearance of your chair, follow these simple maintenance guidelines:
- Cleaning: Wipe down the chair with a damp cloth as needed for quick and easy cleaning. Avoid harsh chemicals or abrasive cleaners.
- Regular Inspection: Periodically check all screws and bolts to ensure they are tight. Re-tighten if necessary to maintain stability and safety.
- Caster Care: Keep the dual-wheel casters free of debris (hair, dust, etc.) to ensure smooth rolling.
Troubleshooting
If you encounter any issues with your chair, please refer to the following common problems and solutions:
- Squeaking Noises: If the chair develops squeaking noises, check all assembly points and tighten any loose screws. A small amount of silicone lubricant can be applied to moving parts or joints if the noise persists.
- Seat Sinks/Does Not Hold Height: This typically indicates an issue with the gas lift cylinder. Ensure the height adjustment lever is fully engaged. If the problem persists, the gas lift may need replacement. Contact customer support for assistance.
- Wobbling: Check that all connections, especially between the seat, backrest, and base, are securely fastened. Ensure the casters are fully inserted into the base.
Specifications
| Feature | Detail |
|---|---|
| Brand | Flash Furniture |
| Model Number | GO-2085-GG |
| Color | Black Fabric |
| Material | Fabric, Plastic, Foam, Polyester, Chrome, Metal |
| Product Dimensions (D x W x H) | 34"D x 32.75"W x 44.5-48"H |
| Item Weight | 60 Pounds |
| Maximum Weight Recommendation | 400 Pounds |
| Seat Material | Fabric |
| Arm Style | Adjustable |
| Furniture Base Movement | Swivel |
| Required Assembly | Yes |
Warranty
This Flash Furniture Hercules Series Executive Office Chair comes with a 2-year limited manufacturer's warranty. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for any warranty claims. For full details and terms, refer to the warranty information provided with your product packaging or contact Flash Furniture customer service.
Support
For further assistance, parts replacement, or to report any issues not covered in this manual, please contact Flash Furniture customer support. You can typically find contact information on the product packaging or on the official Flash Furniture website.
When contacting support, please have your model number (GO-2085-GG) and proof of purchase readily available.