1. Introduction
Thank you for choosing the SIHOO M101C Ergonomic Office Chair. This manual provides essential information for the safe assembly, operation, and maintenance of your new chair. Please read it thoroughly before use and retain it for future reference.
The SIHOO M101C is designed for optimal comfort and support in various settings, including office, gaming, and leisure. It features a double-layered breathable mesh backrest, integrated headrest, and a high-resilience seat cushion.
2. Consignes de sécurité
Suivez toujours ces consignes de sécurité afin d'éviter les blessures ou d'endommager le produit :
- Assurez-vous que tous les composants sont solidement fixés avant utilisation.
- Ne montez pas sur la chaise.
- N’utilisez pas la chaise sur des surfaces irrégulières.
- Tenir les enfants éloignés des pièces mobiles pendant le montage et le fonctionnement.
- Ne pas dépasser le poids maximal recommandé de 100 kg (220 lbs).
- Évitez d'exposer la chaise à la lumière directe du soleil ou à des températures extrêmes.
- Use only original SIHOO replacement parts.
3. Contenu du colis
Vérifiez que toutes les pièces sont présentes avant de commencer l'assemblage :
- Chair Backrest (Dual-Layered Mesh)
- Seat Cushion (High-Resilience)
- Armrests (Red, Geometric Linkage)
- Vérin à gaz
- Base (5-star, with legs and center piece)
- Roulettes (roues)
- Mechanism (for height and tilt adjustment)
- Kit de visserie (vis, clé Allen)
- Manuel de l'utilisateur (ce document)
4. Configuration et assemblage
Le montage prend généralement entre 20 et 30 minutes. Suivez attentivement les étapes suivantes :
4.1 Assembler la base
- Déballez tous les composants et disposez-les sur une surface propre et douce pour éviter les rayures.
- Attach the five legs to the central piece of the base using the provided screws. Ensure each leg is secured with two screws.
- Insert the casters (wheels) into the holes at the end of each leg by pushing firmly until they click into place.
- Insérez le vérin à gaz dans l'orifice central de la base assemblée.

Image: Assembled 5-star base with casters and gas lift cylinder.
4.2 Attach the Mechanism to the Seat
- Locate the underside of the seat cushion. Identify the "FRONT" sticker or marking.
- Align the mechanism with the underside of the seat, ensuring the arrow on the mechanism points towards the "FRONT" of the seat.
- Secure the mechanism to the seat using four screws.
4.3 Attach Armrests and Backrest
- Attach the armrests to the underside of the seat cushion using the designated screws.
- Attach the backrest to the seat assembly, securing it with the remaining screws. The armrests also provide additional support for the backrest.

Image: Fully assembled SIHOO M101C ergonomic office chair, showcasing the red armrests and mesh back.
4.4 Assemblage final
- Placez soigneusement l'assise et le dossier assemblés sur le vérin à gaz, en vous assurant qu'ils sont bien en place.
- Test all adjustments to ensure proper function.
5. Mode d'emploi
Your SIHOO M101C chair offers several adjustments for personalized comfort:
5.1 Réglage de la hauteur
To adjust the seat height (from 18in to 22in):
- To raise: Lift the lever on the right side of the seat while taking your weight off the chair.
- To lower: Lift the lever on the right side of the seat while remaining seated.
5.2 Tilt/Recline Function
The chair allows for a recline up to 106 degrees.
- To unlock tilt: Pull the lever on the right side of the seat outwards.
- To lock tilt: Push the lever on the right side of the seat inwards.
- To adjust tilt tension: Rotate the round knob located underneath the seat. Turn clockwise to increase tension (make it harder to recline) and counter-clockwise to decrease tension (make it easier to recline).

Image: Illustration of the chair's recline function and seat height adjustment mechanism.
5.3 Lumbar and Headrest Support
The chair features a dual S streamlined backrest with broadened lumbar support and an extra-wide breathable headrest for optimal posture and comfort.

Image: Diagram highlighting the ergonomic design of the dual S-shaped backrest for neck, spine, and lumbar support.

Image : Gros plan view of the extra-wide breathable headrest, designed for neck and head support.
6. Entretien
Proper care will extend the life of your SIHOO M101C chair:
- Nettoyage: Nettoyer avec une publicitéamp cloth. For stubborn stains on the mesh or fabric, use a mild soap solution and a soft brush, then wipe with a clean, damp Essuyez avec un chiffon et laissez sécher à l'air libre. Évitez les produits chimiques agressifs.
- Inspection: Vérifiez régulièrement le serrage de toutes les vis et boulons. Resserrer si nécessaire.
- Casters: Pour assurer un mouvement fluide, veillez à ce que les roulettes soient exemptes de cheveux et de débris.
- Lubrification: The gas lift cylinder and mechanism are generally maintenance-free. Do not attempt to lubricate them unless specifically instructed by SIHOO support.
7. Dépannage
| Problème | Cause possible | Solution |
|---|---|---|
| La hauteur de la chaise n'est pas réglable. | Gas lift cylinder not properly installed or faulty; lever not engaged. | Ensure gas lift is fully inserted into the base and seat mechanism. Check if the lever is fully pulled/pushed. Contact support if issue persists. |
| Chair wobbles. | Vis desserrées ; sol inégal. | Check and tighten all assembly screws, especially those connecting the base legs and the mechanism to the seat. Move chair to a level surface. |
| Les roulettes ne roulent pas en douceur. | Débris coincés dans les roulettes ; roulettes non complètement insérées. | Remove any hair or debris from the caster wheels. Ensure casters are fully pushed into the base. |
| Backrest feels loose or unstable. | Backrest or armrest screws are loose. | Tighten all screws connecting the backrest and armrests to the seat. |
8. Spécifications
| Fonctionnalité | Détail |
|---|---|
| Marque | OUI |
| Nom du modèle | M101C-M103 |
| Couleur | Rouge |
| Dimensions du produit (P x L x H) | 17.51"P x 23.22"L x 48.42"H |
| Poids maximum recommandé | 100 kilogramme (environ 220 lb) |
| Plage de réglage de la hauteur du siège | 18 pouces à 22 pouces |
| Position inclinée | Jusqu'à 106 degrés |
| Style du dos | High back mesh office chair |
| Matériel | Polyester, Foam (cushion) |
| Mouvement de la base du meuble | Pivot |
| Certifications | BIFMA X5.1, SGS Certified |

Image: Comprehensive diagram displaying all key dimensions of the SIHOO M101C chair.

Image: Illustration detailing the rigorous quality control tests, including tilt, load, and strength tests, ensuring durability.
9. Garantie et assistance
SIHOO fournit un Garantie de 3 ans from the date of purchase for the M101C Ergonomic Office Chair. During this period, replacement parts will be provided free of charge for any manufacturing defects or issues arising from normal use.
For any inquiries, assistance with assembly, troubleshooting, or warranty claims, please contact SIHOO's dedicated after-sales team. Refer to the contact information provided on the product packaging or the official SIHOO website.
We are committed to ensuring a flawless shopping experience and optimal solutions for our customers.