Internal Installation of Office Chairs

The internal installation steps for different models of office chairs are as follows:

205/206 Office Chairs

1. Caster and Chair Base Installation: Insert the five casters one by one into the mounting holes of the five-pronged chair base, ensuring each caster is fully embedded and secure.
2. Gas Lift Installation: Place the gas lift vertically into the center hole of the chair base, making sure the thicker end of the gas lift is facing down for stability.
3. Armrest and Backrest Connection: Use four M6*25mm screws to fix the armrests to the backrest, ensuring the screws are tightened until there is no wobbling.
4. Seat Pan Installation: Secure the seat pan to the bottom of the chair seat with four M6*20mm screws, ensuring the seat pan is aligned with the chair seat.
5. Armrest Reinforcement: Further secure the upper and lower parts of the armrests with two M6*20mm screws and washers to prevent loosening after long-term use.
6. Decorative Cover and Headrest Installation: Install the decorative cover to conceal the screw holes, and finally fix the headrest to the top of the backrest with two M6*30mm screws.

819 Office Chairs

1. Caster and Chair Base Installation: Similar to the 205/206 model, insert the five casters into the five-pronged chair base.
2. Gas Lift Installation: Place the gas lift vertically into the center of the chair base, ensuring the thicker end is facing down.
3. Seat Pan Installation: Secure the seat pan to the bottom of the chair seat with four M6*20mm screws.
4. Armrest Installation: Fix the left and right armrests to the sides of the chair seat with six M8*25mm screws, ensuring they are symmetrically tightened.
5. Armrest and Backrest Connection: Connect the armrests to the bottom of the backrest with two M8*25mm screws and washers to enhance structural stability.
6. Headrest Installation: Fix the headrest to the top of the backrest with two M6*20mm screws, and finally install the decorative cover.

General Installation Method

1. Caster and Chair Base Installation: Install the casters one by one onto the chair base, ensuring each caster is firmly embedded.
2. Gas Lift Installation: Place the gas lift vertically into the center hole of the chair base, with the thicker end facing down.
3. Base Plate Fixation: Secure the base plate to the bottom of the chair seat with screws, ensuring the screws are tightened until there is no wobbling.
4. Backrest Connection: Align and connect the backrest to the chair seat, ensuring there are no gaps at the connection points.
5. Overall Assembly: Insert the chair seat vertically into the gas lift, ensuring the gas lift is aligned with the center of the chair seat.
6. Armrest and Headrest Installation: Finally, install the armrests and headrest, using the appropriate screws according to the model.

Luban Home Installation Method

1. Caster and Gas Lift Installation: Insert the casters into the five-pronged holes, flip the assembly, and install the gas lift with the thicker end facing down.
2. Base Plate Fixation: Place the base plate on the seat cushion, align the screw holes, and tighten four B screws step by step (first tighten 3-4 turns, then reinforce each one individually).
3. Seat Cushion and Gas Lift Connection: Insert the seat cushion into the gas lift, ensuring it is fully embedded in the base plate hole.
4. Backrest Installation: Insert the bottom of the backrest into the armrest positions on both sides of the seat cushion, first secure the bottom with two C screws, and then use D screws to lock the back of the backrest to the seat cushion bracket.
5. Armrest and Headrest Installation: Press the armrest buttons to insert them into the holes, place the headrest on top of the backrest, and tighten two E screws through the fixing clips.