SIHOO M90C-M101
SIHOO Ergonomic Office Chair Instruction Manual
Brand: SIHOO | Model: M90C-M101
1. Product Overview
The SIHOO Ergonomic Office Chair is designed to provide optimal comfort and support for extended periods of sitting. It features multiple adjustment options to adapt to various body types and preferences, promoting a healthy sitting posture.
Figure 1: Front and side view of the SIHOO Ergonomic Office Chair.
Key Features:
- Comfortable Lumbar Support: Adaptive elastic waist support automatically adjusts to body weight and contact angle, protecting the spine during long sitting periods.
- Breathable Mesh: High-quality breathable mesh ensures air circulation, keeping you cool and comfortable. It is durable and resistant to wear.
- Highly Adjustable: Features an adjustable headrest, 3D armrests, and back tilt. The backrest can be tilted between 90° and 123° and adjusted vertically. Suitable for users from 5'5" to 6'2".
- High Quality Construction: Gas lift is BIFMA and SGS certified, tested to 2504 lbs static pressure, supporting up to 330 lbs.
2. Setup and Assembly
The SIHOO Ergonomic Office Chair is designed for easy assembly. Follow the instructions provided in the included user manual for a step-by-step guide. Assembly typically takes minimal time and can be completed in eight simple steps.
For detailed assembly instructions, please refer to the official User Manual PDF: Download User Manual (PDF).
Figure 2: Diagram illustrating the ergonomic design and adjustable components for assembly reference.
3. Operating Instructions
Your SIHOO office chair offers various adjustments to customize your seating experience for maximum comfort and ergonomic support.
3.1. Lumbar Support Adjustment
The adaptive elastic lumbar support automatically adjusts to your body's weight and contact angle, providing continuous support to your lower back. No manual adjustment is typically needed for the dynamic lumbar support.
Figure 3: Illustration of the dynamic lumbar support system.
3.2. Headrest Adjustment
The headrest can be adjusted for height and angle to provide optimal support for your neck and head. Gently push or pull the headrest to find your preferred position.
Figure 4: Headrest adjustment mechanism for multi-angle and height settings.
3.3. Armrest Adjustment
The 3D armrests can be adjusted in multiple directions (up/down, forward/backward, pivot) to support your elbows and relax your hands, reducing shoulder pressure.
Figure 5: Details of the 3D adjustable armrests.
3.4. Backrest Tilt and Height Adjustment
The backrest can be tilted to three positions (90°, 113°, 123°) for work, rest, or sleep. It also features a three-gear height adjustment to support your back flexibly, accommodating different user heights.
Figure 6: Backrest reclining angles for various activities.
Figure 7: Backrest height adjustment for personalized support.
3.5. Seat Height Adjustment
Adjust the seat height using the lever located under the seat. The chair offers 4 inches of seat height adjustment with 360° free rotation for enhanced convenience.
3.6. Official Product Videos
SIHOO M90D Ergonomic Office Chair Desk Chair Lumbar Support
This video demonstrates the features and adjustments of the SIHOO M90D Ergonomic Office Chair, including its dynamic lumbar support.
M90D High Back Office Chair
An overview video showcasing the high back design and various ergonomic features of the M90D office chair.
4. Maintenance
To ensure the longevity and optimal performance of your SIHOO Ergonomic Office Chair, regular maintenance is recommended.
4.1. Cleaning
Wipe clean with a damp cloth. Avoid using harsh chemicals or abrasive cleaners that could damage the mesh or frame materials.
4.2. Inspection
Periodically check all screws and connections to ensure they are tight. Re-tighten if necessary to maintain stability and prevent wobbling.
5. Troubleshooting
If you encounter any issues with your SIHOO Ergonomic Office Chair, please refer to the following common troubleshooting tips:
- Chair Wobbles: Ensure all assembly screws are securely tightened. Check the base and gas lift for proper installation.
- Adjustments Not Working: Verify that adjustment levers are fully engaged or disengaged as required. If a lever feels stuck, do not force it; re-check the user manual for correct operation.
- Squeaking Noises: Apply a small amount of silicone lubricant to moving parts or joints if squeaking occurs.
For persistent issues, please contact customer support.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | SIHOO |
| Model Name | M90C-M101 |
| Color | Black |
| Product Dimensions | 25.98"D x 25.59"W x 47.24"H |
| Maximum Weight Recommendation | 330 Pounds |
| Material | Sponge (Fill Material), Mesh (Seat/Back) |
| Special Feature | Adjustable (Headrest, Armrests, Backrest, Lumbar Support) |
| Included Components | User Manual |
7. Warranty and Support
7.1. Warranty Information
The SIHOO Ergonomic Office Chair comes with a 3-year free warranty service. This warranty covers product parts and manufacturing defects.
7.2. Customer Support
If you have any questions, require assistance with assembly, operation, or encounter any issues with your chair, please do not hesitate to contact SIHOO customer support. We are committed to providing satisfactory solutions.
For support, please visit the SIHOO Store on Amazon or refer to the contact information provided in your user manual.