SIHOO M18 Ergonomic Office Chair User Manual
Model: M18
Welcome and About SIHOO
Thank you for choosing SIHOO. We hope our products enhance your comfort and promote a healthy lifestyle. SIHOO is a renowned specialist in ergonomic furniture, dedicated to offering healthy and comfortable ergonomic chairs. With 12 years of emphasis on technology and well-being, SIHOO's mission is to enhance people's lives through innovative and ergonomic furniture solutions. SIHOO's ergonomic chairs are available in over 100 countries and have garnered acclaim among Fortune 500 companies, as well as in more than 10 million households worldwide.
For assistance, please contact service@sihoooffice.com. Kindly include your order number to expedite service.
Visit us at: www.sihoooffice.com
Parts List
| Key | Description | Part | Qty. | Spare |
|---|---|---|---|---|
| A | Wheel | 5 | ||
| B | Chair leg tube | 5 | ||
| C | Base | 1 | ||
| D | T wrench | 1 | ||
| E | Chair leg screw (M6x12) | 10 | 1 | |
| F | Decorative cover | 1 | ||
| G | Gas lift | 1 | ||
| H | Armrest screw (M6x25) | 6 | 1 | |
| I | Armrest | 1 pair | ||
| J | Small shim | 10 | 1 | |
| K | Seat cushion | 1 | ||
| L | Mechanism | 1 | ||
| M | Mechanism screw (M6x20) | 4 | 1 | |
| N | Backrest | 1 | ||
| O | Big shim | 3 | 1 | |
| P | Back plate screw (M8x45) | 3 | 1 | |
| Q | Headrest | 1 |
Assembly Instructions
Step 1: Attach the five chair leg tubes (B) to the base (C) using ten M6x12 chair leg screws (E) and ten M6 double-stacked self-locking washers (F). Then insert the wheels (A).
Step 2: Insert the chair foot trim cover into the chair foot, and then put the air pressure rod into the middle hole of the chair leg tube connection base.
Step 3: Fix the armrest to the seat cushion with 6 small shims (J) and 6 M6x25 screws (H).
Step 4: Fix the mechanism (L) to the seat cushion with 4 small shims (J) and 4 M6x20 screws (M).
Step 5: Fix the back plate to the seat cushion with 3 big shims (O) and 3 M8x45 screws (P).
Step 6: Put the mechanism into the gas lift.
Step 7: Insert the headrest (Q) into the slot.
Operation Instructions
Headrest height adjustment: Adjust the height of the headrest.
Lumbar support depth & height adjustment: Adjust the lumbar support depth and height.
Armrests height adjustment: Adjust the height of the armrests.
Seat height adjustment: Adjust the height of the seat.
Backrest tilt angle adjustment: Adjust the tilt angle of the backrest.
Backrest tilt tension adjustment: Adjust the tilt tension of the backrest.
Safety Instructions
- Each chair is designed to support the weight of one person only.
- Please use the chair on a flat, even surface.
- Do not allow children under the age of 5 to sit on the chair without supervision.
- Avoid sitting on the armrest to prevent potential accidents.
- Do not stand on the chair, use it as a ladder, or step on it.
- Please refrain from placing excessive weight on the chair or using it as a makeshift trolley.
- Avoid using sharp or pointed objects that could damage the chair, and keep it away from open flames or sources of heat.
- For your safety, do not attempt to disassemble the gas lift mechanism.
Help Center
About Products:
Q: The backrest mesh is broken.
A: Please contact us, and we will arrange the delivery of a replacement!
Q: The chair is too short for me.
A: Please adjust it to the maximum height to see if it's suitable for you. If not, we recommend changing the gas lift.
Q: What if I receive a damaged or incorrect product?
A: If you receive a defective, incorrect, or incomplete product, please contact us immediately and keep all items and packaging materials until your claim is resolved. If your replacement product is out of stock, we will notify you immediately of the estimated arrival date and work with you to suggest a suitable replacement product.
Q: I hear noises when sitting on the chair.
A: Please check if all parts of the chair have been installed tightly. If not, there might be a problem with the mechanism, and we recommend you send us a video for further evidence first.
Q: Why would the armrest shake?
A: Please check whether the screws are tightened enough first, then check the shaking of the armrest pad.
Q: The backrest shakes.
A: The backrest might not be installed tightly. It's recommended to reinstall it first.
Q: There is an abnormal odor when the chair is taken out of the box.
A: Please leave the chair in a well-ventilated room for 2-3 days before use.
Q: There are scratches or cracks in the backrest or other parts.
A: We hope this does not affect the normal use of the chair, and you can consult us for the replacement of the flawed parts.
Q: There are missing parts in this order.
A: In this case, please inform us which parts are missing along with your order number and provide us with a photo of all the parts you currently have. Then, we will report this to the factory and arrange the delivery or work with you to find a satisfactory solution.
Q: The chair makes me uncomfortable, but I cannot find where the problem is.
A: We are sorry to hear that you are having an unsatisfactory user experience. Please kindly send us a photo or video of where the problem might lie. This way, we can better locate the issue and offer you a solution.
About Delivery:
Q: What is the estimated delivery time?
A: Home delivery within the continental U.S. usually takes 3-8 days.
Q: The product has not been delivered.
A: We apologize for the inconvenience caused. Due to COVID-19, shipping may experience delays. Please be patient, and we will keep track of it with you.
Q: The product fails to be dispatched.
A: Please contact us, and we will confirm your address again. Then we will report this to the DPD.
Q: The shipping information has not been updated.
A: Due to a large quantity of orders, it might take some time before the information is fully updated. Your patience is highly appreciated.
Q: There are scratches or cracks in the backrest or other parts.
A: We hope this does not affect the normal use of the chair, and you can consult us for the replacement of the flawed parts.
About Orders:
Q: Can I cancel my order?
A: For items that have not been delivered or items with delayed delivery, canceling the order will be accepted. Inventory items are usually shipped within 24-48 hours after an order is placed. Once the items are shipped, they cannot be canceled. *Orders of customized or special items cannot be canceled.
Q: My order is lost during delivery.
A: Please contact the responsible logistics center and provide them with detailed information for compensation. If you need any help concerning this, feel free to contact us.
