1. Introduction
This manual provides detailed instructions for the assembly, operation, and maintenance of your VECELO Mesh Office Chair. Please read this manual thoroughly before use to ensure proper setup and to maximize the chair's features and longevity. Keep this manual for future reference.

Figure 1: VECELO Mesh Office Chair (Model KHD-OC01-BLK)
2. Product Specifications
The following table outlines the key specifications for your VECELO Mesh Office Chair:
| Feature | Description |
|---|---|
| Brand | VECELO |
| Model Number | KHD-OC01-BLK |
| Color | Black |
| Material | Alloy Steel (Frame), Foam (Seat), Mesh (Backrest) |
| Product Dimensions (D x W x H) | 56 cm x 56 cm x 91-99 cm |
| Seat Height Range | 32-40 cm |
| Product Weight | 8.3 kg |
| Static Load Capacity | 130 kg |
| Special Features | Armrest, Ergonomic, Space-saving, Height adjustable |
| Assembly Required | Yes |
| Included Components | Office chair x1, Assembly kit x1, Instruction manual x1 |

Figure 2: Chair Dimensions
3. Setup and Assembly
Your VECELO Mesh Office Chair requires assembly. Please follow these steps carefully. It is recommended to assemble the chair on a soft, clean surface to prevent damage.
3.1. Package Contents
Before starting, verify that all parts are present:
- Backrest
- Seat Cushion
- Armrests (Left and Right)
- Gas Lift Cylinder
- Star Base
- Casters (5 pieces)
- Control Mechanism (under-seat plate)
- Hardware Kit (screws, washers, Allen wrench)

Figure 3: Key Components (Gas Lift, Chassis, Base, Casters)
3.2. Assembly Steps
- Attach Casters to Base: Insert each of the five casters into the holes at the end of each leg of the star base. Push firmly until they click into place.
- Insert Gas Lift: Place the gas lift cylinder into the center hole of the assembled star base. Do not remove the red cap from the top of the gas lift until instructed.
- Attach Control Mechanism to Seat: Align the control mechanism with the screw holes on the underside of the seat cushion. Ensure the front of the mechanism faces the front of the seat. Secure with screws provided in the hardware kit.
- Attach Armrests to Seat and Backrest: Attach the armrests to the sides of the seat cushion using the designated screws. Then, attach the backrest to the armrests and the seat using the remaining screws. Ensure all connections are tight but do not overtighten.
- Connect Seat Assembly to Gas Lift: Carefully place the assembled seat and backrest onto the gas lift cylinder, ensuring the center hole of the control mechanism aligns with the top of the gas lift. Press down firmly to secure.
Note: If you encounter difficulty, refer to the diagrams in the included paper manual. Do not force parts together. If screws are difficult to insert, check alignment.
4. Operating Instructions
Your VECELO Mesh Office Chair offers several adjustments for personalized comfort.
4.1. Height Adjustment
To adjust the chair height:
- To raise: While seated, lift the lever located on the right side of the seat. Lift your weight slightly off the seat, and the chair will rise. Release the lever at the desired height.
- To lower: While seated, lift the lever and apply your weight to the seat. The chair will lower. Release the lever at the desired height.
4.2. Tilt/Recline Function
The chair features a tilt function for reclining:
- To enable tilt: Pull the same lever (used for height adjustment) outwards. The backrest will now allow you to lean back.
- To lock upright: Push the lever inwards to lock the backrest in an upright position.
- Tilt Tension Adjustment: Rotate the round knob located under the seat, at the front of the control mechanism. Turn clockwise to increase tension (making it harder to recline) or counter-clockwise to decrease tension (making it easier to recline).
4.3. Armrest Adjustment
The armrests can be flipped up to save space:
- Simply lift the armrests upwards until they lock into a vertical position.
- To return them to the horizontal position, pull them down.

Figure 4: Flip-up Armrests for Space Saving
4.4. Ergonomic Features
The chair is designed with an S-shaped backrest and lumbar support to promote good posture and reduce strain during long periods of sitting.

Figure 5: Ergonomic S-shaped Backrest

Figure 6: Lumbar Support Detail
The high-rebound cushion and breathable mesh material on both the seat and backrest ensure comfort and ventilation, preventing discomfort from prolonged use.

Figure 7: Seat Cushion and Breathable Mesh
5. Maintenance
Regular maintenance helps prolong the life and appearance of your office chair.
- Cleaning: Wipe down plastic and metal parts with a soft, damp cloth. For mesh areas, use a mild soap solution and a soft brush, then wipe with a clean, damp cloth and allow to air dry. Avoid harsh chemicals or abrasive cleaners.
- Inspection: Periodically check all screws and bolts to ensure they are tight. Retighten if necessary.
- Casters: Keep casters free of hair and debris to ensure smooth movement.
- Weight Limit: Do not exceed the static load capacity of 130 kg to prevent damage and ensure safety.
- Armrests: Avoid placing excessive weight or standing on the armrests, as this may cause bending or damage.
6. Troubleshooting
If you encounter any issues with your VECELO Mesh Office Chair, refer to the following common problems and solutions:
| Problem | Possible Cause / Solution |
|---|---|
| Chair does not adjust height | Gas lift lever not fully engaged. Ensure the lever is pulled up completely. If the issue persists, the gas lift may be faulty. |
| Chair wobbles or feels unstable | Loose screws or improper assembly. Check all connections and tighten screws. Ensure the gas lift is fully seated in the base. |
| Casters do not roll smoothly | Debris (hair, dust) caught in casters. Clean casters thoroughly. Casters may be damaged and require replacement. |
| Seat cushion feels uncomfortable / bottoms out | This chair features a high-rebound foam cushion. If discomfort persists, consider using an additional seat cushion. Ensure the chair is used within its specified weight limit. |
| Armrests feel loose or bend | Screws securing armrests may be loose. Retighten. Avoid applying excessive weight or force to the armrests. |
| Difficulty during assembly | Incorrect alignment of parts or overtightening. Review the assembly steps and diagrams carefully. Do not force screws; ensure proper alignment before tightening. |
If the problem persists after attempting these solutions, please contact VECELO customer support.
7. Warranty and Customer Support
VECELO is committed to customer satisfaction. Your chair is covered by a 1-year free parts exchange policy and a 30-day return policy from the date of purchase.
If you experience any initial defects, including missing or damaged parts, please do not hesitate to contact our customer service team. We are available to assist you with any questions or concerns regarding your product.
For support, please refer to the contact information provided with your purchase or visit the official VECELO website.