SIHOO B100 Ergonomic Office Chair Instruction Manual

Introduction

Thank you for purchasing the SIHOO B100 Ergonomic Office Chair. This manual provides detailed instructions for assembly, operation, maintenance, and troubleshooting to ensure safe and optimal use of your chair. Please read this manual thoroughly before assembly and retain it for future reference.

Image: The SIHOO B100 ergonomic office chair in light gray, showcasing its design and features.

Safety Information

• Ensure all parts are present and undamaged before assembly. Do not use if any parts are missing or damaged.
• Follow the assembly instructions carefully. Incorrect assembly can lead to instability and injury.
• Do not stand on the chair or use it as a step stool.
• Do not exceed the maximum weight capacity of 136 kg (299 lbs).
• Keep children and pets away from the chair during assembly.
• Regularly check all bolts and screws to ensure they are tight. Retighten as necessary.
• Use the chair on a flat, stable surface.
• Avoid exposing the chair to direct sunlight or extreme temperatures for prolonged periods.

Package Contents

Before beginning assembly, please verify that all components are included in your package. A complete set of tools, an instruction manual, auxiliary parts, and gloves are provided for your convenience.

• Backrest
• Seat Cushion
• Headrest
• Armrests (2)
• Gas Lift Cylinder
• Base
• Casters (5)
• Footrest
• Assembly Hardware (screws, washers, etc.)
• Assembly Tool (Allen wrench)
• Gloves
• Instruction Manual

Setup and Assembly

Assembly is designed to be straightforward. Please follow these steps carefully. It is recommended to assemble the chair on a soft, clean surface to prevent damage.

Step 1: Attach Casters to the Base

Insert each of the five casters into the holes at the end of each leg of the chair base. Push firmly until they click into place.

Image: The assembled chair base with five casters, ready for the gas lift.

Step 2: Insert Gas Lift Cylinder

Place the gas lift cylinder into the central hole of the assembled base. Ensure it is seated securely.

Step 3: Attach Seat Mechanism to Seat Cushion

Align the seat mechanism with the pre-drilled holes on the underside of the seat cushion. Secure it using the provided screws and Allen wrench. Ensure the front of the mechanism faces the front of the seat.

Step 4: Attach Armrests

Attach the armrests to the sides of the seat cushion using the designated screws. Pay attention to the left and right armrests if they are specific.

Image: The SIHOO B100 chair featuring its 2D flip-up armrests, shown in both lowered and raised positions for space-saving storage.

Step 5: Attach Backrest

Connect the backrest to the seat mechanism using the provided screws. Ensure a firm connection.

Step 6: Attach Headrest

Slide the headrest into the designated slots at the top of the backrest. Secure it if there are any locking mechanisms.

Image: Close-up of the 2D adjustable headrest, demonstrating its 10cm height adjustment and 45-degree angle adjustment for optimal neck support.

Step 7: Attach Footrest

Attach the retractable footrest assembly to the underside of the seat, following the specific instructions for its attachment.

Image: The retractable footrest shown in both its extended and retracted positions, providing leg support for relaxation.

Step 8: Connect Seat Assembly to Gas Lift

Carefully place the assembled seat, backrest, and armrests onto the gas lift cylinder. The tapered hole in the seat mechanism should fit snugly over the top of the gas lift.

Operating Instructions

Your SIHOO B100 chair offers several adjustment features to customize your seating experience.

Seat Height Adjustment

To adjust the seat height, pull the lever located on the right side of the seat upwards. While standing, the seat will rise. While seated, the seat will lower. Release the lever at your desired height.

Reclining Function and Lock

The chair can recline up to 133 degrees. To recline, pull the lever on the left side outwards (away from the chair). Lean back to your desired angle. To lock the recline, push the lever inwards (towards the chair). To return to an upright position, pull the lever outwards again and lean forward.

Image: The SIHOO B100 chair demonstrating its 133-degree recline capability, with controls for locking and unlocking the recline position.

Lumbar Support Adjustment

The independent lumbar support automatically adjusts to your back's curve. No manual adjustment is typically needed for its primary function. The composite sacral support structure helps maintain the natural S-curve of your spine.

Image: A side view of the chair highlighting the independent lumbar support system, designed to reduce strain on the lower back.

Image: Diagram illustrating the internal mechanism of the composite sacral support, showing how it distributes pressure, absorbs impact, and stabilizes the pelvis.

Headrest Adjustment

The 2D headrest can be adjusted vertically by approximately 10 cm and its angle can be tilted by 45 degrees. Grasp the headrest and move it up or down, or tilt it to find your preferred position for head and neck support.

Armrest Adjustment

The 2D armrests can be flipped up to approximately 90 degrees. To raise them, lift the armrests upwards until they lock into the vertical position. To lower them, release the lock (if present) and push them down. This feature allows for space-saving storage under a desk.

Footrest Operation

To extend the footrest, pull it out from under the seat. To retract it, push it back in until it is fully stored. The footrest provides additional support for your legs during breaks or relaxed seating.

Image: A close-up view of the highly breathable mesh material used for the seat and backrest, designed for comfort and ventilation.

Maintenance

• Cleaning: For mesh and plastic parts, wipe with a damp cloth and mild soap. Avoid harsh chemicals or abrasive cleaners.
• Inspection: Periodically check all screws, bolts, and moving parts for tightness and wear. Retighten loose fasteners.
• Casters: Keep casters clean from hair and debris to ensure smooth movement and prevent floor scratches.
• Gas Lift: Do not attempt to disassemble the gas lift cylinder. If it malfunctions, contact customer support.

Troubleshooting

If you encounter any issues not listed here or if the suggested solutions do not resolve the problem, please contact SIHOO customer support.

Specifications

• Model: B100
• Brand: SIHOO
• Color: Light Gray
• Material: Polypropylene, Mesh
• Maximum Weight Capacity: 136 kg (299 lbs)
• Product Weight: 18.5 kg (40.8 lbs)
• Dimensions (Approximate):
  • Overall Height: 112-131 cm (44.1-51.6 inches)
  • Seat Height: 46.5-55.5 cm (18.3-21.9 inches)
  • Seat Width: 50 cm (19.7 inches)
  • Seat Depth: 50 cm (19.7 inches)
  • Backrest Height: 61 cm (24 inches)
  • Headrest Width: 36.5 cm (14.4 inches)
  • Armrest Height (from seat): 25 cm (9.8 inches)
  • Base Diameter: 70 cm (27.6 inches)
• Recline Angle: Up to 133 degrees
• Armrest Type: 2D Flip-up
• Headrest Type: 2D Adjustable (10cm height, 45° angle)
• Lumbar Support: Independent Lumbar Support with Composite Sacral Support
• Casters: Silent PU Casters
• Certifications: BIFMA, SGS

Image: A comprehensive diagram illustrating the various dimensions of the SIHOO B100 office chair, including height, width, and depth measurements for all major components.

Warranty and Support

Your SIHOO B100 office chair comes with a 3-year quality warranty from the date of purchase. This warranty covers manufacturing defects and material failures under normal use.

• Quality Assurance: SIHOO chairs meet US BIFMA standards and have passed rigorous tests including backrest strength, seat impact, and caster durability. The gas cylinder is SGS certified for durability and reliability.
• Customer Support: If you encounter any product defects or have questions, please do not hesitate to contact our customer support team. Our Japanese support team is available to provide prompt and courteous assistance.
• Contact Information: Please refer to your purchase documentation or the SIHOO official website for the most up-to-date contact details for customer service.