Introduction
This manual provides detailed instructions for the assembly, operation, maintenance, and troubleshooting of your SONGMICS OBN088B01 Ergonomic Office Chair. Please read this manual thoroughly before assembly and use to ensure proper function and safety. Keep this manual for future reference.
Safety Instructions
- Ensure all parts are present and undamaged before beginning assembly.
- Follow all assembly steps carefully and in the correct order.
- Do not stand on the chair.
- Do not exceed the maximum weight capacity of 150 kg (330 lbs).
- Keep children and pets away from moving parts during assembly and adjustment.
- Use the chair on a flat, stable surface to prevent tipping.
- Regularly check all screws and connections for tightness. Re-tighten if necessary.
- Avoid exposing the chair to direct sunlight or extreme temperatures for prolonged periods.
Package Contents
Please verify that all components are present and in good condition before beginning assembly:
- 1x Backrest with integrated headrest
- 1x Seat Cushion
- 2x Armrests (left and right)
- 1x Gas Lift Cylinder
- 1x Star Base
- 5x Casters
- 1x Mechanism Plate
- 1x Set of Screws and Assembly Tools (Hex key)

Image: The complete SONGMICS OBN088B01 ergonomic office chair, showcasing its design and components.
Assembly Instructions
Follow these steps to assemble your office chair. It is recommended to assemble the chair on a soft, clean surface to prevent scratches.
- Attach Casters to Base: Insert the 5 casters into the holes at the end of each leg of the star base. Push firmly until they click securely into place.
- Install Gas Lift: Place the gas lift cylinder into the central hole of the star base. Ensure it is seated properly.
- Attach Mechanism Plate to Seat: Align the mechanism plate with the pre-drilled holes on the underside of the seat cushion. Secure it with the provided screws using the hex key. Ensure the front of the mechanism plate (usually indicated by an arrow or 'FRONT' label) faces the front of the seat.
- Attach Armrests to Seat: Secure the armrests to the sides of the seat cushion using the provided screws. Ensure they are oriented correctly (left and right armrests are often distinct).
- Attach Backrest to Seat/Mechanism: Align the backrest with the mounting points on the seat or mechanism plate. Secure with screws.
- Connect Seat Assembly to Gas Lift: Carefully place the assembled seat and backrest onto the gas lift cylinder, ensuring it is centered and stable.
Operating Instructions
Your SONGMICS OBN088B01 office chair offers several adjustment features for optimal comfort and ergonomic support.
Height Adjustment
To adjust the seat height:
- To raise the seat: Lift the lever on the right side of the seat while taking your weight off the chair. Release the lever at the desired height.
- To lower the seat: Lift the lever on the right side of the seat while seated. Release the lever at the desired height.

Image: Illustration of the seat height adjustment lever and its function, showing a 10 cm adjustment range.
Tilt Mechanism
The chair features a tilt mechanism for reclining the backrest and seat, allowing for a more relaxed posture.
- To recline: Pull the lever on the left side of the seat outwards to unlock the tilt function. Lean back to recline.
- To lock the tilt: Push the lever inwards at your desired recline angle.
- To adjust tilt tension: Rotate the round knob located under the seat at the front. Turn clockwise to increase tension (making it harder to recline) and counter-clockwise to decrease tension (making it easier to recline).

Image: Visual guide to the chair's tilt function, including recline angles and controls for locking and tension adjustment.
Foldable Armrests
The armrests can be folded up by 90 degrees to allow the chair to be pushed closer to a desk or to save space.
- To fold up: Simply lift the armrests upwards until they lock into the vertical position.
- To fold down: Pull the armrests downwards until they return to the horizontal position.

Image: Demonstration of the armrests folding upwards to save space or allow closer desk access.
Ergonomic Backrest and Lumbar Support
The S-shaped backrest with integrated headrest and fish-tail lumbar support is designed to conform to your body, providing comprehensive support for your neck and back.

Image: Detailed view of the ergonomic backrest, headrest, and lumbar support, highlighting their design for comfort.
Maintenance
- Cleaning: Wipe the chair with a soft, damp cloth. For stubborn stains, use a mild soap solution and dry thoroughly. Avoid harsh chemicals or abrasive cleaners.
- Casters: Periodically clean the casters to remove dust, hair, and debris that may hinder smooth movement.
- Fasteners: Regularly check all screws and bolts to ensure they are tight. Re-tighten if necessary to maintain stability and safety.
- Gas Lift: The gas lift cylinder is a sealed unit and requires no maintenance. Do not attempt to disassemble it.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair does not adjust height | Gas lift cylinder malfunction or lever not fully engaged. | Ensure the height adjustment lever is fully engaged. If the problem persists, the gas lift may need replacement. Contact customer support. |
| Chair wobbles or is unstable | Loose screws or uneven assembly. | Check and tighten all assembly screws. Ensure the chair is on a flat, level surface. |
| Casters do not roll smoothly | Debris (e.g., hair, dust) caught in casters or damaged casters. | Clean any debris from the caster wheels. Replace damaged casters if necessary. |
| Backrest does not recline or lock | Tilt mechanism locked or tension too high. | Ensure the tilt lock lever is disengaged (pulled outwards). Adjust the tilt tension knob counter-clockwise to loosen the tension. |
Specifications
| Feature | Detail |
|---|---|
| Brand | SONGMICS |
| Model Number | OBN088B01 |
| Color | Black Ink |
| Overall Dimensions (L x W x H) | 70 x 70 x 111-123 cm (27.6 x 27.6 x 43.7-48.4 inches) |
| Seat Dimensions (W x D) | 52 x 53 cm (20.5 x 20.9 inches) |
| Seat Height (Adjustable) | 44-52 cm (17.3-20.5 inches) |
| Backrest Height | 70 cm (27.6 inches) |
| Armrest Height (from seat) | 26 cm (10.2 inches) |
| Item Weight | 11.5 kg (25.3 lbs) |
| Maximum Load Capacity | 150 kg (330 lbs) |
| Materials | Steel, Polyester, Polyurethane Foam, Nylon |
| Special Features | Ergonomic S-shaped backrest, Integrated headrest, Fish-tail lumbar support, Foldable armrests, Adjustable height, Tilt mechanism |
| Recommended Use | Office |

Image: Detailed dimensional diagram of the SONGMICS OBN088B01 office chair, including recommended user specifications.
Warranty and Support
For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official SONGMICS website. Keep your proof of purchase for any warranty claims. Our customer service team is available to assist you with any questions or concerns.