Fixation of Hollowed-Out Office Chairs

The fixation methods for hollowed-out office chairs vary depending on the model, and the corresponding method should be selected based on the specific model. Here are the fixation steps for common models:

W901 Hollowed-Out Model:

1. Armrest Fixation: Use 4 short screws (specification 6x20) to connect the armrests to the backrest. Tighten the screws sequentially with a wrench to ensure a secure connection.
2. Tray Fixation: Use 4 relatively short screws to fix the tray to the seat cushion. Ensure that the screw length matches the depth of the pre-drilled holes to prevent loosening.
3. Headrest Fixation: Install the headrest at the top of the backrest using 2 short screws. Align the screws with the pre-drilled holes during installation to prevent misalignment.
4. Seat Cushion Fixation: Use 4 short screws (specification 6x25) to reinforce the seat cushion, ensuring a tight connection between the cushion and the chair frame.

W209 Hollowed-Out Model:

1. Armrest Installation: Align the armrests with the pre-drilled holes on the seat cushion and fix them with 6 long, thin screws. Tighten the screws one by one with a wrench to avoid uneven stress distribution.
2. Tray Fixation: After aligning the tray with the holes on the seat cushion, fix it with 4 short, thin screws. Check the fit between the tray and the seat cushion during installation.
3. Backrest Installation: Align the backrest with the pre-drilled holes on the tray, insert a gasket first, and then fix it with 3 short, thick screws. The gasket reduces friction between the screws and the components, extending their service life.
4. Headrest Fixation: Align the headrest with the holes on the backrest and fix it with 2 short, thin screws. Test the adjustment function of the headrest after installation to ensure it works properly.

A350 Hollowed-Out Model:

1. Armrest Installation: Install the armrests on both sides separately, using 3 long, thin screws for each side. Ensure that the armrests are perpendicular to the seat cushion to avoid tilting.
2. Tray Fixation: Align the tray with the screw holes on the seat cushion and fix it with 4 short, thin screws. Check the load-bearing stability of the tray after installation.
3. Backrest Installation: Align the backrest with the holes on the tray, insert a gasket first, and then fix it with 3 long, thick screws. Ensure that the screws are fully screwed in to prevent loosening.
4. Headrest Fixation: Align the headrest with the holes on the backrest and fix it with 2 medium-sized, thin screws. Test the up-and-down adjustment function of the headrest after installation to ensure smooth operation.

W6001 Hollowed-Out Model:
Install the seat cushion, armrests, tray, and backrest in sequence, using screws of different specifications to fix each component. Refer to the product manual for specific screw models. Pay attention to the correspondence between components during installation to avoid misalignment.

Precautions:

• Before installation, confirm that the screw specifications match the model to avoid damaging components due to incorrect use.
• Apply even force when tightening screws to prevent local over-tightening or loosening.
• After installation, test the stability of each component to ensure there is no wobbling or abnormal noise.