1. Introduction and Overview
Thank you for choosing the EMIAH C029 Series Ergonomic Executive Office Chair. This chair is designed to provide comfort and support for extended periods of sitting, featuring a full recline function, a retractable footrest, and adjustable lumbar support. This manual provides detailed instructions for assembly, operation, maintenance, and troubleshooting to ensure optimal use and longevity of your chair.

Overview of the EMIAH C029 Series Executive Office Chair in a reclined position.
2. Safety Information
Please read and understand all safety instructions before assembling or using this chair. Failure to follow these instructions may result in injury or damage to the product.
- Always assemble the chair according to the provided instructions.
- Do not exceed the maximum weight recommendation of 300 pounds (136 kg).
- Keep the chair on stable surfaces and away from heat sources to prevent damage or injury.
- Ensure all screws and bolts are securely tightened before use. Periodically check and re-tighten if necessary.
- Avoid standing on the chair or using it as a step stool.
- Keep children and pets away from the chair during assembly.
3. Package Contents
Verify that all components are present and undamaged before beginning assembly. If any parts are missing or damaged, please contact customer support.

All chair components as received in the package.
- Backrest Cushion
- Seat Cushion with Mechanism
- Armrests (Left & Right)
- Five-star Base
- Gas Lift Cylinder
- Gas Lift Cover
- Casters (5 pieces)
- Retractable Footrest
- Lumbar Support Pillow
- Hardware Kit (Screws, Washers, Allen Wrench)
- Instruction Manual
4. Assembly Instructions
Follow these steps carefully to assemble your EMIAH C029 Series Office Chair. An assembly video is provided for visual guidance.
4.1. Base Assembly
- Attach the five-star base legs to the central hub using the provided screws and Allen wrench. Ensure they are securely fastened.
- Insert the five casters into the holes at the end of each base leg. Push firmly until they click into place.
- Insert the gas lift cylinder into the center hole of the assembled base. Place the gas lift cover over the cylinder.
4.2. Seat Assembly
- Locate the seat cushion. Attach the chair mechanism to the underside of the seat cushion using the designated screws. Ensure the front of the mechanism aligns with the front of the seat.
- Attach the footrest brackets to the underside of the seat cushion, securing them with screws.
- Slide the retractable footrest into the footrest brackets. Secure the footrest with the rubber rings at the rear end of the pedal bracket to prevent it from being pulled out completely.
4.3. Backrest and Armrest Assembly
- Attach the backrest plate to the backrest cushion using the provided screws.
- Align the backrest with the seat cushion and attach the armrests. Secure the armrests to both the backrest and the seat cushion using the appropriate screws and washers. Ensure all connections are tight.
4.4. Final Assembly
- Carefully place the assembled seat and backrest onto the gas lift cylinder on the base. Press down firmly to ensure it is securely seated.
- Attach the lumbar support pillow to the backrest using its straps.
Assembly Video Guide
Official EMIAH C029 Series Chair Assembly Guide video.
5. Operating Instructions
Familiarize yourself with the chair's adjustable features for personalized comfort.
5.1. Height Adjustment
- To raise the seat: Lift the lever on the right side of the seat while taking your weight off the chair.
- To lower the seat: Lift the lever on the right side of the seat while remaining seated.
5.2. Reclining Function
- To recline: Pull the lever on the left side of the seat upwards to unlock the backrest. Lean back to your desired angle (between 95° and 155°). Push the lever downwards to lock the backrest in position.
- To return to upright: Pull the lever upwards, lean forward slightly, and then push the lever downwards to lock.

The chair offers a wide reclining range from 95° to 155°.
5.3. Retractable Footrest
- To extend the footrest: Pull the footrest out from underneath the seat.
- To retract the footrest: Push the footrest back underneath the seat until it is fully hidden.
5.4. Swivel Function
The chair features a 360-degree swivel for easy movement and access to your workspace.
5.5. Lumbar Support Pillow
The detachable memory foam lumbar pillow can be adjusted or removed to provide targeted support for your lower back.
Product Overview Video
Official EMIAH C029 Black Office Chair Product Overview video.
6. Maintenance
Proper maintenance will extend the life and appearance of your chair.
- Cleaning: Wipe clean with a damp cloth. For tougher stains on the PU leather, use a mild soap solution and wipe dry immediately. Avoid harsh chemicals or abrasive cleaners.
- Inspection: Periodically check all bolts and screws to ensure they are tight. Re-tighten if any looseness is detected.
- Casters: Keep casters free of debris (hair, dust, etc.) to ensure smooth rolling and prevent floor damage.
7. Troubleshooting
If you encounter any issues with your chair, refer to the following common problems and solutions:
- Chair wobbles: Ensure all assembly screws are tightened evenly. Check that the gas lift is properly seated in the base.
- Chair does not adjust height: Verify that the gas lift lever is functioning correctly and the gas lift cylinder is properly installed. If the issue persists, the gas lift may need replacement.
- Backrest does not recline or lock: Check the reclining mechanism lever. Ensure it moves freely and engages properly.
- Casters not rolling smoothly: Inspect casters for trapped debris (hair, lint) and clean them. Ensure they are fully inserted into the base legs.
If these steps do not resolve the issue, please contact EMIAH customer support.
8. Specifications
| Brand | EMIAH |
| Model Name | YMX-C029-3 |
| Color | Black |
| Product Dimensions | 30.71"D x 29.92"W x 40"H |
| Item Weight | 29 pounds |
| Maximum Weight Recommendation | 300 Pounds |
| Material | PU Leather (Faux Leather), Sponge Fill |
| Back Style | High Back |
| Special Features | Adjustable Backrest, Arm Rest, Ergonomic, Foot Rest, Reclining |
| Reclining Position Count | 13 |
| Furniture Base Movement | Swivel |
| Product Care Instructions | Wipe Clean |

Key dimensions and weight capacity of the chair.
9. Warranty and Support
EMIAH is committed to providing quality products and customer satisfaction.
- After-Sales Service: Your EMIAH chair comes with a 1-year dedicated after-sales service.
- Protection Plans: Extended protection plans are available for purchase, including 2-Year and 3-Year options, as well as a Complete Protect monthly plan.
- Contact Support: For any questions, concerns, or warranty claims, please contact EMIAH customer support through your retailer or the official EMIAH website.