Assembly of Black Office Chair

The assembly steps for a black office chair should be adjusted according to the specific model, but the general process can refer to the following steps and be optimized based on the assembly characteristics of common models such as the IKEA FLINTAN office chair:

1. Installation of Casters and Chair Base

   • Align the casters with the mounting holes on the chair base and press vertically until fully engaged. Some casters (such as those on the IKEA FLINTAN office chair) may have a locking function; after installation, test the locking/unlocking mechanism to ensure the chair can be fixed in place when not in use.
   • If the chair base has a star-shaped structure, ensure all casters are installed in the same direction (usually no front/back distinction) to prevent wobbling during subsequent use.

2. Connection of Gas Lift and Chair Base

   • Insert the gas lift vertically into the center hole of the chair base, ensuring sufficient insertion depth (usually indicated by a 'click' sound or inability to press further). The gas lift is the core component for adjusting the chair's height; avoid tilting it during installation to prevent air leakage or damage.
   • Simplified models like the IKEA FLINTAN office chair may omit this step and directly combine the seat with the gas lift; refer to the instructions for confirmation.

3. Fixing the Seat to the Base Plate

   • Use a screwdriver to secure the base plate (including the control lever) to the bottom of the seat with screws. Ensure the screw specifications match (usually M6 or M8) to avoid over-tightening causing stripped threads or under-tightening leading to rattling.
   • The base plate of some ergonomic chairs (such as the Haworth Fern) may integrate a recline tension adjustment function; confirm the position of the adjustment knob before installation for easy subsequent operation.

4. Combination of Backrest and Seat

   • Align the backrest with the connection holes on the seat, insert vertically, and press lightly until fully seated. Some models may require secondary fixation with screws (such as those with a separate backrest and seat design); follow the instructions for operation.
   • When inserting the gas lift, keep the backrest perpendicular to the seat to prevent uneven force on the gas lift.

5. Installation of Armrests and Headrest

   • Armrests are usually fixed to both sides of the seat with screws; adjust them to a symmetrical position (measurable with a tape measure). The headrest is directly inserted into the预留 (pre-drilled) holes on the backrest; some models may require rotation to lock.
   • The armrests of the IKEA FLINTAN office chair may have a snap-on design; align the slots and press firmly during installation.

Precautions:

• Before assembly, count all components (such as screws, wrenches) and read the instructions to confirm any step differences.
• Ergonomic chairs (such as the Haworth Fern) may involve personalized adjustments for seat firmness, recline angle, etc.; make these adjustments according to the instructions after assembly.
• If encountering issues such as overly tight snaps or misaligned screw holes, do not force assembly; it is recommended to contact customer service or watch official assembly videos for assistance.