1. Introduction
Thank you for choosing the FLEXISPOT OC3 Cloud Ergonomic Office Chair. This manual provides detailed instructions for assembly, operation, maintenance, and troubleshooting to ensure you get the most comfortable and efficient experience from your new chair. Please read this manual thoroughly before assembly and use, and retain it for future reference.

Image: The FLEXISPOT OC3 Cloud Ergonomic Office Chair, designed for comfort and support in an office environment.
2. Safety Information
To prevent injury and ensure safe operation, please adhere to the following guidelines:
- Do not exceed the maximum weight capacity of 300 pounds (136 kg).
- Ensure all screws and bolts are securely tightened before using the chair. Periodically check and re-tighten as necessary.
- Avoid standing on the chair or using it as a step stool.
- Do not sit on the armrests as this may cause damage or instability.
- Keep children and pets away from the chair during assembly. Small parts may pose a choking hazard.
- Use the chair on a level surface to prevent tipping.
- Follow all assembly and adjustment instructions carefully. Improper assembly or adjustment can lead to injury.
3. Parts List
Before beginning assembly, please verify that all components are present and undamaged. If any parts are missing or damaged, please contact customer support.
- Backrest (B)
- Seat Cushion (C)
- Armrest L (D)
- Armrest R (D)
- Base (E)
- Gas Lift (F)
- Wheels (K) x 5
- Mechanism (A)
- Headrest (O)
- Clothes Hanger (Q)
- Screws and Tools (H, I, G, L)
4. Setup and Assembly
Follow these steps to assemble your FLEXISPOT OC3 Cloud Ergonomic Office Chair. It is recommended to assemble the chair on a soft, clean surface to prevent damage.
Step-by-Step Assembly Video
Video: Official installation guide for the FLEXISPOT OC3 Cloud Ergonomic Office Chair, demonstrating step-by-step assembly.
Written Assembly Instructions
- Attach Armrests to Seat Cushion: Connect the left and right armrests (D) to the underside of the seat cushion (C) using the provided M6*25MM screws (G). Ensure they are securely fastened.
- Install Mechanism: Attach the mechanism (A) to the underside of the seat cushion (C) using the M6*20MM screws (I). Ensure the front of the mechanism aligns with the front of the seat cushion.
- Connect Backrest: Secure the backrest (B) to the mechanism (A) using the M8*18MM screws (H).
- Assemble Base: Insert the five wheels (K) firmly into the holes at the end of each leg of the chair base (E). Ensure they are fully seated.
- Insert Gas Lift: Remove the protective cover from the gas lift (F) and insert it into the center hole of the assembled base (E).
- Attach Seat to Base: Carefully place the assembled seat cushion and backrest onto the gas lift (F), aligning the center hole of the mechanism with the top of the gas lift. Press down firmly to secure.
- Install Headrest and Hanger: Remove the two screws from the headrest (O). Attach the headrest (O) and the clothes hanger (Q) to the top of the backrest (B) using the screws previously removed.
5. Operating Instructions and Adjustments
The FLEXISPOT OC3 Cloud chair offers multiple adjustment options to customize your seating experience for optimal comfort and ergonomic support.
Chair Features Overview Video
Video: Overview video showcasing the ergonomic features and adjustments of the FLEXISPOT OC3 Cloud Ergonomic Office Chair.
Adjustments
- Seat Height Adjustment: Locate the lever on the right side under the seat. Pull the lever up to raise the seat. While seated, pull the lever up to lower the seat. Release the lever to lock the height.
- Lumbar Support Adjustment: The chair features adjustable lumbar support. Gently push or pull the lumbar support pad on the backrest to adjust its position vertically to match the curve of your lower back. The lumbar support can be moved up and down by approximately 1.9 inches.

Image: Adjusting the vertical position of the lumbar support for personalized back comfort.
- Backrest Recline and Lock: Use the tilt tension control mechanism to adjust the reclining angle. The backrest can be locked between 90 and 130 degrees. Push the lever inwards to lock the backrest in your desired position, and pull it outwards to unlock and recline.

Image: Visual representation of the chair's recline angles and tilt tension adjustment.
- 2D Headrest Adjustment: The headrest can be adjusted in multiple dimensions for precise neck and head support. It can be moved up and down by 2.1 inches and rotated by 30 degrees. Gently push or pull the headrest to adjust its height and angle.

Image: Details on adjusting the headrest for height and rotation.
- Armrest Adjustment: The armrests are adjustable to provide comfortable support for your arms and shoulders. Lift the armrest to adjust its height.
- Integrated Coat Hanger: The headrest includes a convenient coat hanger to store clothing, keeping your workspace tidy.

Image: The headrest with its integrated coat hanger feature.
6. Maintenance
Regular maintenance will prolong the life and appearance of your office chair.
- Cleaning: For mesh and fabric parts, use a soft brush or vacuum cleaner to remove dust. For stains, gently dab with a damp cloth and mild soap, then wipe with a clean, dry cloth. Avoid harsh chemicals.
- Frame: Wipe metal and plastic components with a soft, damp cloth.
- Casters: Periodically clean hair and debris from the casters to ensure smooth movement.
- Fasteners: Check all screws and bolts every few months and re-tighten if necessary to maintain stability.
7. Troubleshooting
If you encounter any issues with your chair, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair does not adjust height | Gas lift cover not removed; Gas lift faulty; Actuation lever disconnected. | Ensure gas lift cover is removed. Check if the gas lift is properly inserted. Verify the lever mechanism is connected. Contact support if gas lift is faulty. |
| Chair wobbles or is unstable | Loose screws; Uneven floor. | Check and tighten all assembly screws. Ensure the chair is on a flat, level surface. |
| Casters do not roll smoothly | Debris in casters; Casters damaged. | Remove any hair or debris from the caster wheels. If casters are damaged, contact support for replacements. |
| Backrest does not recline or lock | Tilt mechanism locked; Mechanism faulty. | Ensure the recline lock lever is disengaged. Check the tilt tension knob. If the mechanism is faulty, contact support. |
If the problem persists after attempting these solutions, please contact FLEXISPOT customer support.
8. Specifications
Detailed specifications for the FLEXISPOT OC3 Cloud Ergonomic Office Chair:
| Feature | Detail |
|---|---|
| Brand | FLEXISPOT |
| Model Name | OC3 Cloud (Item model number: FLEXISPOT-OC3-CLOUD) |
| Color | Black |
| Product Dimensions (D x W x H) | 21"D x 25.6"W x 47.2"H |
| Seat Depth | 21 inches |
| Material | Metal, Comfortable Foam (Seat Cushion), Mesh (Backrest) |
| Back Style | Comfortable Mesh Back |
| Arm Style | Recessed, Adjustable |
| Special Features | Adjustable Lumbar Support (1.9in up/down), 2D Headrest (2.1in lift, 30° rotation), Lockable Backrest (90-130 degrees), Foam Seat Cushion, Breathable Mesh, Integrated Coat Hanger |
| Weight Capacity | 300 lbs |
| Item Weight | 42.7 pounds |
| UPC | 840460485920 |
| Indoor/Outdoor Usage | Indoor |

Image: Comprehensive dimensions of the OC3 Cloud chair for reference.
9. Warranty and Support
FLEXISPOT provides a warranty for its products. For specific warranty details, including coverage period and terms, please refer to the warranty card included with your product or visit the official FLEXISPOT website. If you require assistance with assembly, operation, or troubleshooting, or if you need to claim warranty service, please contact FLEXISPOT customer support through their official channels.
For further information and support, please visit the FLEXISPOT Store on Amazon.





