1. Introduction
This manual provides essential information for the safe and effective use of your Yaheetech Gaming Chair. Designed for optimal comfort during extended periods of use, this chair features a massage lumbar pillow, foldable footrest, breathable faux leather, and various adjustable components to enhance your experience.
Key features include: Massage Lumbar Pillow and Folding Footrest, Breathable Comfort with ventilation holes, Secure and Reliable steel frame supporting up to 300 lb, Ergonomic Comfort with adjustable components, and Smooth Movement with multi-directional PU casters and adjustable height.

Figure 1: Yaheetech Gaming Chair (Black/White model)
2. Safety Information
For your safety and to prevent damage to the product, please adhere to the following guidelines:
- Do not lean back forcefully on the backrest to prevent tipping over.
- Ensure the chair is used on a hard floor surface.
- The maximum weight capacity of this chair is 300 lb. Exceeding this weight may result in damage or injury.
- Keep all components away from children during assembly.
- Do not use abrasive cleaners or harsh chemicals on the chair's surfaces.
3. Package Contents
Verify that all components are present before beginning assembly. If any parts are missing or damaged, please contact customer support.
- Chair Backrest
- Seat Cushion with Armrests
- Footrest Assembly
- Gas Lift Cylinder
- Star Base
- Casters (5x)
- Headrest Pillow
- Lumbar Support Pillow (with USB cable and switch)
- Assembly Hardware (screws, washers, Allen wrench)
- User Manual (this document)
4. Setup and Assembly
For detailed assembly instructions, please refer to the official Installation Manual (PDF) provided with your product. A general overview of the steps is provided below:
- Attach the casters to the star base by pushing them firmly into the holes.
- Insert the gas lift cylinder into the center hole of the star base.
- Attach the seat cushion to the gas lift cylinder.
- Secure the chair backrest to the seat cushion using the provided screws and Allen wrench.
- Install the footrest assembly to the underside of the seat.
- Attach the headrest pillow and lumbar support pillow using their adjustable straps. Ensure the lumbar pillow's USB cable is accessible for power.

Figure 2: Ergonomic Design and Key Components
5. Operating Instructions
Your Yaheetech Gaming Chair offers several adjustable features for personalized comfort:
5.1 Height Adjustment
To adjust the chair's height, pull the lever located on the right side of the seat upwards while applying or releasing weight from the seat. Release the lever to lock the height in place.
5.2 Recline Function
To recline the backrest, pull the lever on the left side of the seat upwards and lean back to your desired angle (up to 135 degrees). Release the lever to lock the backrest position.
5.3 Footrest Operation
Pull the footrest assembly from underneath the seat to extend it. Fold it back and push it under the seat when not in use.

Figure 3: Multi-functional Features Overview
5.4 Massage Lumbar Pillow
The lumbar support pillow features a massage function. Connect the USB cable from the pillow to a USB power source (e.g., computer, power bank). Use the integrated switch on the cable to turn the massage function on or off. A convenient back pocket is provided to store the cable and small items.

Figure 4: Massage Lumbar Support Detail
5.5 Linkage Armrests
The armrests are designed to automatically adjust with the chair's recline angle, providing continuous support for your elbows and arms.

Figure 5: Linkage Armrests
6. Maintenance
Proper care will extend the life of your gaming chair:
- Cleaning: Wipe clean with a soft, damp cloth. Avoid using harsh chemicals or abrasive cleaners, as they may damage the faux leather.
- Regular Inspection: Periodically check all screws and bolts to ensure they are tight. Re-tighten if necessary.
- Surface Protection: Use the chair on hard floor surfaces. Consider a chair mat to protect delicate flooring.
- Breathability: The faux leather features ventilation holes for improved airflow. Ensure these are not obstructed.

Figure 6: Breathable Faux Leather
7. Troubleshooting
If you encounter any issues with your Yaheetech Gaming Chair, refer to the following common solutions:
- Chair Squeaks: Check and tighten all bolts and screws. Applying a small amount of silicone lubricant to moving parts may also help.
- Height Adjustment Issues: Ensure the gas lift lever is fully engaged. If the chair does not raise or lower, the gas lift cylinder may need replacement.
- Recline Not Holding: Verify that the recline lever is fully released and locked into position.
- Massage Function Not Working: Ensure the USB cable is securely connected to a powered USB port and the switch on the cable is in the "on" position.
- Casters Not Rolling Smoothly: Check for debris (hair, lint) wrapped around the caster wheels and remove them.
8. Specifications
| Feature | Specification |
|---|---|
| Brand | Yaheetech |
| Model Name | Charles (YT-0014039101) |
| Color | Black/White |
| Product Dimensions | 24.4"D x 28.5"W x 52"H |
| Maximum Weight Recommendation | 300 Pounds |
| Fill Material | Foam |
| Furniture Finish | Faux Leather |
| Reclining Position Count | 2 (up to 135 degrees) |
| Special Features | USB with Switch, Adjustable Height, Arm Rest, Storage Bag, Foot Rest |
| Item Weight | 38.2 pounds |
| Country of Origin | Vietnam |
9. Warranty and Support
For warranty information and customer support, please refer to the documentation included with your purchase or visit the official Yaheetech website. You may also find additional support and FAQs on the product's Amazon listing page.
Official Installation Manual (PDF): Download Here





