1. Introduction
Thank you for choosing the Marsail Ergonomic Office Chair MSOFC62B. This manual provides detailed instructions for assembly, operation, maintenance, and troubleshooting to ensure you get the most comfortable and efficient experience from your new chair. Please read this manual carefully before assembly and use, and retain it for future reference.
2. Safety Information
- Ensure all components are securely fastened before use.
- Do not stand on the chair.
- Do not use the chair if any parts are damaged or missing.
- Keep children away from the chair during assembly.
- Maximum weight capacity: 150 kg (330 lbs).
- Recommended user height: 165 cm - 185 cm.
3. Package Contents
Before assembly, please verify that all parts are present and undamaged. If any parts are missing or damaged, contact customer support.
- Backrest with mesh
- Seat cushion
- Headrest
- Armrests (2)
- Gas lift cylinder
- Star base
- Casters (5)
- Mechanism plate
- Hardware kit (screws, washers, Allen wrench)
- User Manual
4. Assembly Instructions
Assembly is designed to be straightforward with clear instructions and labeled parts. Follow the steps below for proper setup.
- 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 provided in the hardware kit.
- Attach Armrests to Seat: Secure the armrests to the sides of the seat cushion using the designated screws.
- Attach Backrest to Seat: Connect the backrest to the seat assembly using the provided screws and align the mounting points.
- Attach Headrest: Slide the headrest into the designated slots at the top of the backrest.
- Connect Seat Assembly to Gas Lift: Carefully place the assembled seat onto the gas lift cylinder, ensuring it is centered and stable.
For detailed visual instructions, please refer to the included assembly diagram or PDF manual.
5. Operating Instructions (Adjustments)
The Marsail Ergonomic Office Chair offers multiple adjustment options to customize your seating experience for optimal comfort and support.
5.1. Chair Height Adjustment
To adjust the chair height, locate the lever on the right side beneath the seat. While seated, pull the lever up to lower the chair. To raise the chair, stand up slightly and pull the lever up. Release the lever at your desired height.
5.2. Recline Function and Lock
The chair features a recline function with three lockable angles (104°, 114°, 130°). To recline, pull the lever on the left side beneath the seat. Lean back to your desired angle and push the lever down to lock it in place. To return to an upright position, unlock the lever and lean forward.

Figure 5.2: Lockable Recline Function. The chair can be set to three distinct angles for varied comfort.
5.3. Adjustable Lumbar Support
The chair includes a 2D adjustable lumbar support cushion, 4.5 cm thick, with 6 cm of height adjustment. To adjust, rotate the knob on the backrest to move the lumbar support in or out. To adjust the height, slide the lumbar support up or down along the backrest.

Figure 5.3: Adjustable Lumbar Support. Adjust depth and height for personalized back support.
5.4. 2D Adjustable Headrest
The 2D headrest can be tilted by 45° and adjusted 9 cm in height. To adjust the height, grasp the headrest and slide it up or down. To adjust the tilt, gently push or pull the headrest to your desired angle.

Figure 5.4: 2D Adjustable Headrest. Provides comfortable neck support with height and tilt options.
5.5. Adjustable Armrests
The armrests are height-adjustable. To adjust, press the button on the side of each armrest and slide it up or down to your preferred height. Release the button to lock the armrest in position.
5.6. Thick Contoured Seat
The 8 cm thick contoured seat is designed with high-resilience foam and breathable mesh to provide comfort and support, adapting to the natural curve of your hips and promoting air circulation.

Figure 5.6: Thick Contoured Seat. Designed for pressure relief and enhanced air circulation.
6. Maintenance
Proper maintenance will extend the life and appearance of your Marsail office chair.
- Cleaning: The manufacturer recommends dry cleaning for the fabric components. For mesh and plastic parts, wipe with a soft, damp cloth and mild detergent. Avoid harsh chemicals or abrasive cleaners.
- Inspection: Periodically check all screws and bolts to ensure they are tight. Retighten if necessary.
- Casters: Keep casters clean from hair and debris to ensure smooth movement.
- Gas Lift: Do not attempt to disassemble the gas lift cylinder.
7. Troubleshooting
If you encounter any issues with your chair, refer to the common problems and solutions below.
- Chair Squeaks: Check all screws and bolts for tightness. Apply a small amount of silicone lubricant to moving parts or joints if the squeaking persists.
- Chair Does Not Adjust Height: Ensure the gas lift lever is fully engaged. If the issue persists, the gas lift cylinder may need replacement. Contact customer support.
- Casters Not Rolling Smoothly: Remove any hair or debris from the caster wheels. If damaged, casters can be replaced.
- Backrest or Armrests Feel Loose: Tighten the screws connecting these components to the seat.
If these solutions do not resolve the issue, please contact Marsail customer support.
8. Specifications

Figure 8.1: Product Dimensions and Weight Capacity.
| Feature | Specification |
|---|---|
| Brand | Marsail |
| Model Name | MSOFC62B |
| Color | Ebony |
| Material (Frame) | Metal |
| Material (Seat) | Foam |
| Material (Backrest) | Mesh |
| Product Dimensions (D x W x H) | 68 cm x 68 cm x 134 cm |
| Item Weight | 16.95 kg |
| Maximum Recommended Weight | 150 kg |
| Recommended User Height | 165 cm - 185 cm |
| Special Features | Adjustable Height, Ergonomic Design, Adjustable Armrests, Adjustable Headrest, Adjustable Lumbar Support |
| Recline Angles | 104°, 114°, 130° (Lockable) |
| UPC | 840478878196 |
9. Warranty and Support
Marsail is committed to providing high-quality products. This product comes with a standard manufacturer's warranty against defects in materials and workmanship. Please refer to your purchase documentation for specific warranty terms and duration.
For technical support, warranty claims, or replacement parts, please contact Marsail customer service through the retailer where you purchased the product or visit the official Marsail website.
Please have your model number (MSOFC62B) and proof of purchase ready when contacting support.







