1. Important Safety Information
Please read all instructions carefully before assembly and use. Retain this manual for future reference.
- This product is designed for adult use.
- Maximum weight capacity: 330 lbs (150 kg). Do not exceed this limit.
- Ensure all components are securely fastened before use. Regularly check and tighten fasteners.
- Use the chair on a stable, level surface to prevent tipping.
- Keep hands and fingers clear of moving parts during adjustment.
- Do not stand on the chair.
- Avoid exposing the chair to direct sunlight or extreme temperatures to prevent material degradation.
WARNING: Failure to follow these instructions may result in injury or damage to the product.
2. Package Contents
Verify that all parts are present before beginning assembly. If any parts are missing or damaged, contact customer support.
| Part | Description | Quantity |
|---|---|---|
| A | Backrest | 1 |
| B | Seat Cushion | 1 |
| C | Armrests (Left & Right) | 2 |
| D | Base (5-star) | 1 |
| E | Casters | 5 |
| F | Gas Lift Cylinder | 1 |
| G | Gas Lift Cover | 1 |
| H | Mechanism Plate | 1 |
| I | Footrest | 1 |
| J | Headrest Pillow | 1 |
| K | Lumbar Support Pillow | 1 |
| L | Hardware Pack (Bolts, Washers, Allen Wrench) | 1 Set |
3. Setup and Assembly Instructions
Follow these steps for proper assembly. 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 (E) into the holes at the end of each leg of the 5-star base (D) until they click securely into place.
- Install Gas Lift: Place the gas lift cylinder (F) into the center hole of the assembled base (D). Cover the gas lift cylinder with the gas lift cover (G).
- Attach Mechanism Plate to Seat: Align the mechanism plate (H) with the screw holes on the underside of the seat cushion (B). Ensure the front of the mechanism plate faces the front of the seat. Secure with bolts from the hardware pack (L) using the Allen wrench. Tighten all bolts firmly.
- Attach Armrests to Seat: Align the armrests (C) with the designated screw holes on the sides of the seat cushion (B). Secure with bolts from the hardware pack (L). Do not overtighten initially; allow for slight adjustment.
- Attach Backrest to Seat and Armrests: Align the backrest (A) with the mounting brackets on the seat cushion (B) and the armrests (C). Secure with bolts from the hardware pack (L). Once all bolts are in place, tighten all armrest and backrest bolts firmly.
- Install Footrest: Slide the footrest (I) into the designated slots under the seat cushion (B). Ensure it moves smoothly.
- Place Seat Assembly onto Gas Lift: Carefully place the assembled seat (with backrest and armrests) onto the gas lift cylinder (F) by aligning the center hole of the mechanism plate with the top of the gas lift. Press down firmly to secure.
- Attach Pillows: Attach the headrest pillow (J) and lumbar support pillow (K) to the backrest using their integrated straps. Adjust their positions for optimal comfort.
Figure 1: Product Details and Components. This image illustrates the key components of the chair, such as the adjustable headrest, comfy lumbar pillow, linkage armrests, thickened cushion, stable 5-claw base, and smooth rolling wheels, aiding in assembly identification.
4. Operating Instructions
Familiarize yourself with the chair's adjustable features to optimize your comfort and support.
4.1. Seat Height Adjustment
To adjust the seat height:
- To raise the seat: Lift the lever located on the right side of the seat while taking your weight off the chair. The seat will rise automatically. Release the lever at the desired height.
- To lower the seat: Lift the lever located on the right side of the seat while remaining seated. The seat will lower. Release the lever at the desired height.
Figure 2: Seat Height Adjustment. This image demonstrates how to use the lever to adjust the seat height, allowing for a 3-inch vertical adjustment and 360-degree swivel.
4.2. Backrest Recline Adjustment
The backrest can be reclined from 90° (upright) to 155° (nearly flat).
- To recline: Lift the lever located on the left side of the seat. Lean back to the desired angle. Release the lever to lock the backrest in position.
- To return to upright: Lift the lever on the left side and lean forward slightly. The backrest will return to its upright position. Release the lever to lock.
Figure 3: Backrest Angle Adjustment. This diagram shows the range of recline from 90° to 155°, along with instructions for operating the recline lever and extending the footrest.
4.3. Footrest Operation
The retractable footrest provides additional support for relaxation.
- To extend: Pull the footrest (I) outwards from under the seat.
- To retract: Push the footrest (I) back under the seat until it is fully stored.
Note: The footrest is designed to extend up to 15 inches.
4.4. Linkage Armrests
The armrests are designed to move in conjunction with the backrest's recline angle, providing continuous arm support.
- No manual adjustment is required for the armrests; they automatically adjust with the backrest.
4.5. Swivel Function
The chair features a 360° swivel function for easy movement and interaction within your workspace.
- Simply rotate the chair in any direction as needed.
5. Maintenance and Care
Proper care will extend the life and appearance of your GYMAX Gaming Chair.
- Cleaning: Wipe clean with a damp cloth. For stubborn stains on PU/PVC leather, use a mild soap solution and wipe dry immediately. Avoid harsh chemicals or abrasive cleaners.
- Fasteners: Periodically check all bolts and screws to ensure they are tight. Retighten as necessary to maintain stability and prevent squeaking.
- Casters: Keep casters free of hair and debris to ensure smooth rolling.
- General Care: Avoid placing heavy objects on the chair's armrests or backrest when not in use. Do not expose the chair to direct sunlight for prolonged periods.
6. Troubleshooting
If you encounter any issues with your chair, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair is wobbly or unstable. | Loose bolts or uneven assembly. | Check and tighten all assembly bolts. Ensure the chair is on a flat surface. |
| Chair squeaks when moving. | Loose connections or friction between parts. | Tighten all bolts. Apply a small amount of silicone lubricant to moving parts if necessary (avoiding fabric/leather). |
| Seat height adjustment not working. | Gas lift cylinder issue or lever mechanism obstruction. | Ensure the lever is fully engaged. Check for any obstructions around the gas lift. If the issue persists, contact customer support. |
| Backrest recline not locking. | Recline mechanism obstruction or damage. | Ensure the recline lever is fully released to lock. Check for any foreign objects obstructing the mechanism. |
| Casters not rolling smoothly. | Debris caught in casters. | Remove any hair, dust, or debris from the caster wheels. |
7. Specifications
| Feature | Detail |
|---|---|
| Brand | GYMAX |
| Model Name | Charles |
| Color | Grey |
| Product Dimensions (D x W x H) | 27" x 27" x 49" |
| Seat Height Adjustment Range | 17" to 20" |
| Backrest Recline Angle | 90° - 155° |
| Maximum Weight Capacity | 330 lbs |
| Material | PU and PVC Leather, Sponge Fill |
| Arm Style | Linkage Armrests |
| Base Type | Heavy-duty 5-claw base |
| Wheels | Mute PU Rolling Wheels |
| Special Features | Retractable Footrest, Adjustable Headrest & Lumbar Pillow, 360° Swivel |
| Item Weight | 41 pounds |
Figure 4: Product Dimensions. This image provides detailed measurements of the chair's height, width, and depth, along with its maximum weight capacity.
8. Warranty and Support
GYMAX is committed to providing quality products. For any questions, missing parts, or concerns regarding your Charles Gaming Chair, please contact our customer support team.
- Customer Support: Refer to your purchase documentation or the GYMAX official website for contact information.
- Warranty: Specific warranty details may vary by region and retailer. Please retain your proof of purchase for warranty claims.
We recommend registering your product on the GYMAX website to receive updates and facilitate warranty service.
