1. Introduction
Thank you for choosing the SIHOO B100 Pro Ergonomic Office Chair. This manual provides detailed instructions for assembly, operation, maintenance, and troubleshooting to ensure you get the most out of your new chair. Designed for comfort and support, the B100 Pro features advanced ergonomic adjustments to enhance your sitting experience.
2. Safety Information
- Ensure all components are securely fastened before use.
- Do not stand on the chair.
- Avoid placing heavy objects on the chair that exceed the maximum recommended weight of 300 lbs (approximately 136 kg).
- Keep children away from moving parts during adjustment.
- Use the chair on a stable, flat surface.
- Regularly inspect the chair for loose screws or damaged parts.
3. Package Contents
Please check the package contents against the list below. If any parts are missing or damaged, contact customer support.
- Backrest Assembly
- Seat Cushion Assembly
- Headrest
- Armrests (2)
- Gas Lift Cylinder
- Base (Star Base)
- Casters (5)
- Mechanism Plate
- Hardware Kit (screws, washers, Allen wrench)
4. Assembly Instructions
Follow these steps carefully to assemble your SIHOO B100 Pro chair. It is recommended to assemble the chair on a soft, clean surface to prevent damage.
- Attach Casters to Base: Insert the five casters into the holes at the end of each leg of the star base until they click securely into place.
- Insert Gas Lift: Place the gas lift cylinder into the center hole of the star base.
- Attach Mechanism Plate to Seat: Align the mechanism plate with the screw holes on the underside of the seat cushion. Ensure the front of the mechanism faces the front of the seat. Secure with screws using the provided Allen wrench.
- Attach Armrests to Seat: Secure the armrests to the sides of the seat cushion using the designated screws. Ensure they are oriented correctly.
- Attach Backrest to Seat: Connect the backrest assembly to the seat cushion assembly. Secure with screws.
- Attach Headrest: Slide the headrest into the designated slots at the top of the backrest.
- Connect Seat to Gas Lift: Carefully place the assembled seat and backrest onto the gas lift cylinder, ensuring it is centered and stable.
- Final Check: Verify all screws are tightened and all components are securely in place before using the chair.
5. Operating Instructions (Adjustments)
The SIHOO B100 Pro chair offers multiple adjustment options to customize your seating experience.
5.1. Seat Height Adjustment
To adjust the seat height, locate the lever on the right side under the seat.
- To raise: Lift the lever while taking your weight off the seat.
- To lower: Lift the lever while seated.
5.2. 4D Dynamic Lumbar Support
This image highlights the adaptive 4D lumbar support system, designed to automatically adjust to your sitting posture, providing continuous support to the lower back and reducing pressure.
The 4D lumbar support system automatically adapts to your sitting position, whether upright or reclined. It provides dynamic support to the natural curve of your spine, reducing pressure during prolonged sitting. No manual adjustment is typically required for its primary function.
5.3. 3D Headrest Adjustment
This diagram demonstrates the 3D headrest adjustments, allowing for 10cm (4 inches) of vertical lift, 45% axial rotation, and 20% axial rotation, ensuring optimal neck support.
The extra-large 3D headrest provides ergonomic support for your neck.
- Height Adjustment: Gently pull the headrest up or push it down to adjust its vertical position (up to 10cm / 4 inches).
- Angle Adjustment: Tilt the headrest forward or backward to find the most comfortable angle (up to 45% axial rotation and 20% axial rotation).
5.4. 4D Folding Armrests
This image details the 4D armrest controls, showing 360° rotation, 90° rotation, 25° rotation, and 45mm forward/backward slide, providing versatile arm support.
The 4D armrests offer extensive adjustability for personalized comfort and space-saving.
- Height Adjustment: Use the button on the side of the armrest to raise or lower its height.
- Forward/Backward Slide: Slide the armrest pad forward or backward (up to 45mm).
- Left/Right Angle Rotation: Rotate the armrest pads left or right (up to 90°).
- Inward/Outward Angle: Adjust the armrest angle (up to 25°).
- Folding Function: The armrests can be folded up to allow the chair to be pushed closer to or under a desk, saving space.
5.5. Recline Function (90-135°)
This image displays the chair's recline functionality for rest and entertainment, alongside its ability to be folded and stored compactly under a desk, enhancing space efficiency.
The chair features a 3-level adjustable recline mechanism, allowing you to switch between focused work and relaxation.
- Recline Angles: Choose from 110°, 123°, or 135° preset recline positions.
- Activating Recline: Use the lever on the left side under the seat to unlock the recline. Lean back to your desired angle and push the lever back down to lock it.
6. Maintenance
Proper maintenance will extend the life and appearance of your SIHOO B100 Pro chair.
- Cleaning Mesh Fabric: Use a soft cloth dampened with mild soap and water. Do not use abrasive cleaners or harsh chemicals. Allow to air dry completely.
- Cleaning Plastic/Metal Parts: Wipe with a soft, damp cloth.
- Caster Maintenance: Periodically clean hair and debris from the casters to ensure smooth movement.
- Screw Tightness: Every few months, check all screws and bolts to ensure they are tight. Retighten if necessary.
7. Troubleshooting
If you encounter any issues with your chair, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair does not adjust height. | Gas lift not engaged or faulty. | Ensure the height adjustment lever is fully pulled. If the issue persists, the gas lift may need replacement. |
| Chair wobbles. | Loose screws or uneven floor. | Check and tighten all assembly screws. Ensure the chair is on a flat surface. |
| Casters do not roll smoothly. | Debris caught in casters. | Remove any hair, dust, or debris from the caster wheels. |
| Backrest does not recline or lock. | Recline mechanism locked or faulty. | Ensure the recline lever is in the unlocked position. If it still doesn't work, contact support. |
If you cannot resolve the issue using these steps, please contact SIHOO customer support.
8. Specifications
This image illustrates the key dimensions of the SIHOO B100 Pro chair, providing measurements for overall height (112-131cm), backrest height (53.5cm), seat width (50cm), seat depth (43.5cm), and seat height adjustment range (46.5-55.5cm).
| Feature | Detail |
|---|---|
| Brand | SIHOO |
| Model Name | B100 Pro |
| Color | White (B100pro) |
| Material | Polypropylene frame, Mesh seat/backrest, Polystyrene filling |
| Overall Item Dimensions (LxWxH) | 72 x 70 x 112-131 cm (28.3 x 27.6 x 44.1-51.6 inches) |
| Item Weight | 16.1 kg (35.5 lbs) |
| Maximum Recommended Weight | 300 lbs (approx. 136 kg) |
| Seat Height Range | 46.5 - 55.5 cm (18.3 - 21.8 inches) |
| Seat Depth | 43.5 cm (17.1 inches) |
| Backrest Width | 50 cm (19.7 inches) |
| Recline Positions | 3 (110°, 123°, 135°) |
| Armrest Style | 4D Folding Armrests |
| Lumbar Support | 4D Dynamic Adaptive |
| Headrest | 3D Adjustable |
| Assembly Required | Yes |
9. Warranty and Support
The SIHOO B100 Pro ergonomic office chair is rigorously tested to SGS and BIFMA standards for durability, robustness, and safety.
- Manufacturer's Warranty: This product comes with a 3-year manufacturer's warranty.
- Return Policy: A 30-day return policy is applicable.
- Customer Support: For any questions, missing parts, or warranty claims, please contact SIHOO customer support. Our team aims to respond within 24 hours.
For further assistance, please visit the official SIHOO website or contact your retailer.