SIHOO B100 Ergonomic Office Chair User Manual

1. Introduction

This manual provides detailed instructions for the assembly, operation, and maintenance of your SIHOO B100 Ergonomic Office Chair. Please read this manual thoroughly before assembly and use to ensure proper function and safety. Retain this manual for future reference.

A complete view of the SIHOO B100 ergonomic office chair, showcasing its design and overall structure.

2. Safety Information

• Ensure all components are securely fastened before using the chair.
• Do not stand on the chair.
• Do not use the chair if any parts are damaged, missing, or appear to be malfunctioning. Contact customer support immediately.
• Keep children and pets away from moving parts during assembly and adjustment.
• The maximum weight capacity for this chair is 136 kg (299 lbs). Do not exceed this limit.
• Use the chair on a flat, stable surface to prevent tipping.

3. Package Contents

Upon unpacking, please verify that all components listed below are present. If any parts are missing or damaged, please contact SIHOO customer support.

• Backrest Assembly
• Seat Assembly with Mechanism
• Headrest
• Armrests (2)
• Gas Lift Cylinder
• Chair Base (5-star)
• Casters (5)
• Hardware Kit (screws, washers, Allen wrench)

4. Setup and Assembly

Follow these steps carefully for proper assembly. It is recommended to assemble the chair on a soft, clean surface to prevent damage to the components or your floor.

1. Attach Casters to Base: Insert each of the five casters into the holes at the end of each leg of the chair base until they click securely into place.
2. Insert Gas Lift: Place the gas lift cylinder into the center hole of the assembled chair base. Ensure it is firmly seated.
3. Attach Armrests to Seat: Secure the armrests to the underside of the seat assembly using the provided screws and Allen wrench. Ensure the armrests are oriented correctly (left and right).
4. Attach Backrest to Seat Mechanism: Align the backrest with the seat mechanism and secure it using the provided screws. Do not overtighten initially.
5. Connect Seat to Gas Lift: Carefully place the assembled seat and backrest onto the gas lift cylinder, ensuring the center hole of the seat mechanism aligns with the top of the gas lift. Press down firmly to secure.
6. Attach Headrest: Slide the headrest into the designated slots at the top of the backrest. Adjust to your preferred height and angle.
7. Final Tightening: Once all components are in place, go back and securely tighten all screws. Test all adjustments before regular use.

5. Operating Instructions (Adjustments)

The SIHOO B100 chair offers multiple adjustment options to customize your seating experience for optimal comfort and ergonomic support.

5.1. Chair Height Adjustment

• To raise the chair: Lift the lever located on the right side under the seat while taking your weight off the seat.
• To lower the chair: Lift the lever while seated, allowing your weight to lower the chair to the desired height.

5.2. Recline Function and Tilt Tension

This image demonstrates the chair's flexible recline function, offering three distinct angles: 110 degrees for focused work, 125 degrees for reading, and 135 degrees for relaxation, allowing users to adjust the chair to their specific activity.

• Recline Lock: Use the lever on the left side under the seat to lock or unlock the recline function. Push in to lock, pull out to unlock.
• Recline Angles: The chair supports recline angles of 110° (concentration), 125° (reading), and 135° (relaxation).
• Tilt Tension: Rotate the round knob located under the front of the seat to adjust the tension of the recline. Turn clockwise to increase tension (harder to recline) and counter-clockwise to decrease tension (easier to recline).

5.3. Dynamic Lumbar Support

This image details the advanced dynamic lumbar support system of the SIHOO B100 chair, featuring a 3-layer, 3-spring mechanism designed to provide continuous and adaptive support to the lower back, maintaining structural integrity for over 5 years.

The SIHOO B100 features a dynamic 4D lumbar support system that automatically adapts to your movements, providing continuous support to your lower back. This system helps reduce fatigue and promotes a healthy sitting posture.

5.4. Headrest Adjustment

This image illustrates the adjustable headrest of the SIHOO B100 chair, which can rotate 45 degrees and offers 10.2 cm of height adjustment, providing comfortable and customizable support for the head and neck.

• Height Adjustment: Gently pull the headrest up or push it down to adjust its height. It offers 10.2 cm of vertical adjustment.
• Angle Adjustment: The headrest can be rotated up to 45 degrees to find the optimal angle for neck support.

5.5. Armrest Adjustment

• Foldable Armrests: The armrests can be pivoted upwards by 90 degrees, allowing the chair to be pushed closer to a desk or for easier entry/exit.
• 2D Pivoting: The armrests also offer 2D pivoting functionality for additional comfort and support.

5.6. Ergonomic Benefits and Material

This diagram illustrates the ergonomic advantages of the SIHOO B100 chair, showing how its design helps reduce body pressure by 36% and improves postural support by 57% during extended sitting periods (10+ hours).

These images showcase the fully breathable mesh material used in the SIHOO B100 chair, from backrest to seat, ensuring optimal air circulation and fresh comfort during long working days.

The SIHOO B100 is designed with a fully breathable mesh material for both the backrest and seat, ensuring optimal air circulation and comfort during long periods of use. Its ergonomic design aims to reduce body pressure and enhance postural support.

6. Maintenance

• Cleaning: Use a damp cloth with mild soap and water to clean the mesh and other surfaces. Avoid harsh chemicals or abrasive cleaners, as they may damage the materials.
• Fasteners: Periodically check all screws and bolts to ensure they are tight. Retighten if necessary to maintain stability and prevent squeaking.
• Moving Parts: If any moving parts become stiff or noisy, a small amount of silicone-based lubricant can be applied.
• Avoid Direct Sunlight: Prolonged exposure to direct sunlight can cause the mesh and plastic components to fade or degrade.

7. Troubleshooting

• Chair Squeaks: Check all assembly screws and tighten them. If squeaking persists, apply a small amount of lubricant to the joints and moving parts.
• Difficulty Adjusting Height: Ensure the gas lift lever is fully engaged. Check for any obstructions under the seat mechanism. If the gas lift is faulty, it may need replacement.
• Chair Wobbles: Verify that all connections, especially between the base, gas lift, and seat, are secure. Ensure the chair is on a level surface.
• Backrest Does Not Recline/Lock: Check the recline lock lever on the left side under the seat. Ensure it is fully engaged or disengaged as desired. Adjust tilt tension if the recline is too stiff or too loose.

If you encounter issues not listed here or require further assistance, please contact SIHOO customer support.

8. Specifications

This diagram illustrates the full dimensions of the SIHOO B100 ergonomic office chair, including height, width, and depth measurements for the backrest, seat, and overall chair. It also provides recommended user height (1.45m-1.83m) and weight (40kg-137kg) ranges.

9. Warranty and Support

• Manufacturer's Warranty: The SIHOO B100 Ergonomic Office Chair comes with a 3-year manufacturer's warranty. This warranty covers defects in materials and workmanship under normal use.
• Return Policy: A 30-day return policy is available from the date of purchase. Please refer to your retailer's specific return terms.
• Customer Support: For any questions, concerns, or warranty claims, please contact SIHOO customer support. We aim to provide a response and support within 24 hours.

Contact Information:
Please refer to the contact details provided with your purchase or visit the official SIHOO website for support.