1. Introduction
This manual provides essential instructions for the assembly, operation, maintenance, and troubleshooting of your Marsail Ergonomic Office Chair, Model MSOC19B-US. Please read this manual thoroughly before assembly and use to ensure proper function and safety. Retain this manual for future reference.
Image 1.1: The Marsail Ergonomic Office Chair MSOC19B-US. This image displays the fully assembled chair in an office setting, highlighting its mesh backrest, adjustable headrest, and five-star base with casters.
2. Safety Information
- Ensure all components are present and undamaged before assembly. Do not use if any parts are missing or broken.
- Follow assembly instructions carefully. Incorrect assembly can lead to instability and injury.
- Do not stand on the chair.
- Do not use the chair for purposes other than its intended use as an office or gaming chair.
- Keep children and pets away from the chair during assembly.
- The maximum weight capacity for this chair is 300 lbs. Do not exceed this limit.
- Regularly check all bolts and screws to ensure they are tightened. Re-tighten if necessary.
3. Package Contents
Before beginning assembly, verify that all components are included in the package. If any parts are missing or damaged, please contact customer support.
- Backrest Assembly
- Seat Cushion Assembly
- Headrest
- Armrests (2)
- Five-Star Base
- Casters (5)
- Gas Lift Cylinder
- Mechanism Plate
- Hardware Pack (screws, washers, Allen key)
4. Setup and Assembly
Assembly of the Marsail Ergonomic Office Chair is designed to be straightforward. An Allen key and all necessary hardware are included. It is recommended to assemble the chair on a soft, clean surface to prevent damage.
- Attach Casters to Base: Insert each of the five casters into the holes at the end of each leg of the five-star base. Push firmly until they click into place.
- Insert Gas Lift: Place the gas lift cylinder into the center hole of the five-star base.
- Attach Mechanism Plate to Seat: Align the mechanism plate with the pre-drilled holes on the underside of the seat cushion. Ensure the front of the mechanism faces the front of the seat. Secure with screws using the provided Allen key.
- Attach Armrests to Seat: Secure the armrests to the sides of the seat cushion using the designated screws. Ensure they are oriented correctly.
- Attach Backrest to Seat: Connect the backrest to the seat assembly. Align the mounting points and secure with screws.
- 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 and backrest onto the gas lift cylinder, ensuring the center hole of the mechanism plate aligns with the top of the gas lift. Press down firmly to secure.
Image 4.1: Key components for assembly, including smooth and silent casters, a large and stable 27.6-inch base, and an SGS-certified gas lift. These parts ensure stability and mobility.
5. Operating and Adjustments
The Marsail Ergonomic Office Chair offers multiple adjustment features to customize your seating experience for optimal comfort and support.
5.1 Seat Height Adjustment
- Locate the lever on the right side, beneath the seat.
- To raise the seat: Lift the lever while taking your weight off the seat.
- To lower the seat: Lift the lever while seated.
- The seat height can be adjusted from 18.8 inches to 22.1 inches.
5.2 Backrest Recline Function
- Locate the recline lever, typically on the left side beneath the seat.
- To recline: Pull the lever outwards and lean back to your desired angle (90° to 120°). Release the lever to lock the position.
- To return upright: Lean forward slightly while pulling the lever outwards.
Image 5.1: Illustration of the chair's recline functionality, showing positions for 90° (work), 105° (relax), and 120° (unwind). This demonstrates the flexibility for various activities.
5.3 Adjustable Lumbar Support
- The butterfly-shaped lumbar support is height-adjustable.
- To adjust: Gently push the lumbar support up or down to find your preferred position. It offers 8 height levels and can be adjusted by 1.96 inches.
Image 5.2: Close-up view of the adjustable lumbar support, indicating its 1.96-inch vertical adjustment range for targeted lower back support.
5.4 Headrest Adjustment
- The headrest is both height-adjustable and tilt-adjustable.
- To adjust height: Grasp the headrest and slide it up or down. It has a 3.94-inch vertical adjustment range.
- To adjust tilt: Pivot the headrest forward or backward to achieve a comfortable angle (up to 45° tilt).
Image 5.3: Visual representation of the headrest's two-dimensional adjustability, showing both the 3.94-inch up and down movement and the 45° tilt angle for neck support.
5.5 Armrest Adjustment
- The armrests are height-adjustable.
- To adjust: Locate the button or lever on the side of each armrest. Press it and slide the armrest up or down. Release the button/lever to lock.
- Armrests can move up and down by 1.96 inches.
5.6 Swivel Function
- The chair is designed to swivel 360 degrees for ease of movement and access.
6. Maintenance
Proper maintenance ensures the longevity and continued performance of your Marsail Ergonomic Office Chair.
- Cleaning: Wipe clean with a damp cloth. Avoid harsh chemicals or abrasive cleaners, which can damage the mesh fabric or frame finish.
- Inspection: Periodically check all screws and bolts to ensure they are tight. Re-tighten any loose fasteners to maintain stability and safety.
- Casters: Keep casters free of debris (hair, dust, etc.) to ensure smooth movement.
7. Troubleshooting
If you encounter any issues with your chair, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair does not adjust height | Gas lift malfunction or lever not engaged | Ensure the height adjustment lever is fully engaged. If the issue persists, the gas lift may need replacement. |
| Chair is wobbly or unstable | Loose screws or improper assembly | Check all assembly screws and re-tighten them. Ensure the gas lift is fully seated in the base and mechanism. |
| Casters do not roll smoothly | Debris in casters or damaged casters | Clean any hair or debris from the caster wheels. If damaged, casters may need replacement. |
| Backrest does not recline or lock | Recline mechanism issue or lever not engaged | Ensure the recline lever is fully engaged. Check for any obstructions in the mechanism. |
8. Specifications
Detailed specifications for the Marsail Ergonomic Office Chair MSOC19B-US:
- Brand: Marsail
- Model Name: MSOC19B-US
- Color: Ebony
- Product Dimensions: 18.9"D x 27.6"W x 43"H
- Item Weight: 31.5 pounds
- Back Style: Solid Back (Mesh)
- Special Features: Adjustable Headrest, Adjustable Height, Adjustable Lumbar, Ergonomic, Space Saving
- Recommended Uses: Computer, Gaming, Office, Reading, Relaxing
- Maximum Weight Capacity: 300 lbs
- Reclining Position Count: 3 (90°, 105°, 120°)
- Arm Style: With arms (Up and Down Adjustable)
- Fill Material: Foam (for seat cushion base)
- UPC: 840478820553
Image 8.1: Diagram illustrating the key dimensions of the Marsail Ergonomic Office Chair, including seat height range (18.8"-22.1"), backrest height (20.5"), headrest height range (5.7"-8.7"), armrest height adjustment (9.4"), and seat dimensions (18.5"-18.9"). The maximum weight capacity of 300 lbs is also noted.
9. Warranty Information
The Marsail Ergonomic Office Chair MSOC19B-US comes with a 5-year warranty. This warranty covers manufacturing defects and significant malfunctions under normal use. Please retain your proof of purchase for warranty claims. For specific terms and conditions, refer to the warranty card included with your product or contact Marsail customer support.
10. Support
For further assistance, questions, or to report any issues not covered in this manual, please contact Marsail customer support or visit the official Marsail store:
