Marsail Ergonomic Office Chair MSOC12B Instruction Manual

1. Important Safety Information

Please read all instructions carefully before assembly and use. Keep this manual for future reference.

• Ensure all parts are present and undamaged before assembly. Do not use if any parts are missing or broken.
• Assemble the chair on a soft, clean surface to prevent scratches.
• Do not overtighten screws during assembly.
• Do not stand on the chair.
• Do not use the chair for purposes other than its intended use as an office chair.
• Maximum weight recommendation: 300 Pounds.

2. Package Contents

Verify that all components are included in your package:

Image: All components of the Marsail Ergonomic Office Chair MSOC12B laid out for assembly.

• Headrest
• Backrest
• Seat
• Armrests (x2)
• Leg Connector
• Legs (x5)
• Casters (x5)
• Gas Lift Cylinder
• Lift Mechanism
• Decorative Cover
• Assembly Hardware (bolts, washers, Allen wrench)

3. Assembly Instructions

Follow these steps to assemble your Marsail Ergonomic Office Chair. An assembly video is provided for visual guidance.

1. Assemble the Chair Legs: Remove the decorative cover from the leg connector. Slide the five chair legs onto the leg connector and secure them with the provided bolts using the Allen wrench.
2. Attach the Casters and Gas Lift Cylinder: Press the casters firmly into the holes at the end of each leg. Flip over the assembled base. Attach the decorative cover to the center, then press the gas lift cylinder into the leg connector.
3. Assemble the Armrests and Backrest: Align the holes on the armrests with the holes on the backrest. Secure them with the appropriate bolts.
4. Attach the Seat: Attach the seat to the assembled armrests using washers and bolts.
5. Attach the Lift Mechanism: Attach the lift mechanism to the underside of the seat using washers and bolts. Ensure the front of the mechanism aligns with the front of the seat.
6. Attach the Chair to the Base: Align the hole underneath the chair (where the lift mechanism is attached) with the gas lift cylinder on the base. Press the seat down firmly to secure the chair to the base.
7. Attach the Headrest: Attach the headrest to the top of the backrest with the designated bolts. Before attaching the final cover, ensure the headrest is working properly. Once the cover is in place, it is difficult to remove.

4. Operating Instructions

Your Marsail Ergonomic Office Chair offers multiple adjustments for personalized comfort.

4.1. Seat Height Adjustment

To adjust the seat height, pull the lever located under the right side of the seat upwards. While holding the lever, stand up to raise the seat or remain seated to lower it. Release the lever to lock the height.

4.2. Recline Function

The chair features a recline function from 90° to 120°. To recline, pull the lever located under the left side of the seat outwards. Lean back to your desired angle and push the lever inwards to lock the recline position. To adjust the tension of the recline, rotate the knob located at the front underside of the seat.

Image: Illustration of the chair's recline range and controls for tension adjustment and tilt-lock.

4.3. Adjustable Headrest

The 2D headrest can be adjusted for height and tilt. To adjust the height, grasp the headrest and slide it up or down. To adjust the tilt, pivot the headrest forward or backward to find your optimal neck support.

Image: A user demonstrating the adjustment of the headrest for personalized comfort.

4.4. Adjustable Lumbar Support

The lumbar support can be adjusted 0.8 inches forward and backward, and 1.2 inches up and down. Use the knob on the side of the backrest to adjust the depth and height of the lumbar support to align with your spine's natural curve.

Image: Detailed view of the adjustable lumbar support, highlighting its range of motion.

4.5. Flip-Up Liftable Armrests

The armrests can be adjusted by 1.18 inches up and down. To adjust the height, press the button on the side of the armrest and move it to your desired position. The armrests can also be flipped up 90° to allow the chair to slide under a desk, saving space.

Image: The chair's armrests demonstrating both height adjustment and the flip-up feature for space-saving.

4.6. Swivel and Casters

The chair features a 360° swivel function for easy movement. The 360° smooth and quiet caster wheels allow for effortless gliding across hard floor surfaces.

5. Maintenance and Care

Proper care will extend the life and appearance of your office chair.

• Cleaning: The manufacturer recommends dry cleaning for the fabric components. For general cleaning, wipe surfaces with a soft, damp cloth. Avoid harsh chemicals or abrasive cleaners.
• Inspection: Periodically check all bolts and connections to ensure they are tight. Retighten if necessary.
• Casters: Keep the caster wheels free of debris (hair, dust, etc.) to ensure smooth movement.

6. Troubleshooting

If you encounter any issues with your chair, refer to these common solutions:

• Adjustments not working: Ensure all levers are fully engaged or disengaged as required. Check for any obstructions.
• Chair squeaks: Check and tighten all assembly bolts. A small amount of silicone lubricant can be applied to moving parts if necessary.
• Chair unstable: Verify that all legs are securely attached and casters are fully inserted. Ensure the gas lift cylinder is properly seated in the base.

7. Specifications

Image: Product dimensions and maximum load capacity of the chair.

8. Warranty and Support

For warranty information, technical support, or any questions regarding your Marsail Ergonomic Office Chair, please contact Marsail customer service directly. Refer to the contact information provided with your purchase or visit the official Marsail website.