1. Introduction
Thank you for purchasing the CAGUUU AXIS Ergo Core Ergonomic Office Chair. This chair is designed to provide exceptional comfort and support, promoting a healthy posture during extended periods of sitting. Its advanced ergonomic features, including multi-dimensional adjustments and breathable mesh, make it ideal for various activities such as desk work, telework, studying, and gaming. Please read this manual carefully to ensure proper assembly, operation, and maintenance of your chair.

Figure 1: CAGUUU AXIS Ergo Core Office Chair in Grey.
2. Product Features
- Ergonomic Design: Supports the body's natural S-curve with a three-dimensional structure, maintaining a comfortable posture during long hours of desk work, telework, study, or gaming.
- Adjustable Backrest: Features 5-stage height adjustment to accommodate various body types.
- Adjustable Seat: Offers 8cm front-back slide adjustment for flexible customization.
- 3D Headrest: Adjustable up/down, front/back, and angle for thorough neck and head support.
- 360° Tracking Lumbar Support: Independently movable left/right lumbar supports work together to track changes in posture 360°, firmly supporting from the waist to the spine line and maintaining a natural S-curve posture.
- Breathable Mesh: High-quality, high-elasticity mesh material on the backrest and seat ensures excellent breathability and comfort, preventing stuffiness during prolonged use.
- High-Density Urethane Seat: The seat uses high-density urethane foam to disperse body pressure and reduce fatigue.
- 5D Armrests: Multi-directional adjustments including height, forward/backward, left/right, and rotation for comprehensive arm support.
- 130-Degree Reclining: Allows for comfortable relaxation and various postures.
- Retractable Footrest: Provides additional comfort for full-body relaxation.
- Silent Casters: Equipped with 60mm silent PU casters for smooth and quiet movement.
- Safety Gas Cylinder: Features a Class 4 safety gas cylinder for reliable height adjustment.

Figure 2: Key Features Overview.
3. Setup and Assembly
The CAGUUU AXIS Ergo Core Office Chair is designed for easy assembly. Most major components come pre-assembled, significantly reducing setup time. For detailed visual guidance, please refer to the assembly video below.
3.1 Assembly Video
Video 1: Unboxing and Assembly Guide for the CAGUUU Ergonomic Chair. This video demonstrates the step-by-step process of assembling the chair, from unpacking to final setup, highlighting the ease of installation.
3.2 Key Assembly Steps
- Attach the casters to the chair base. Ensure they are securely inserted.
- Insert the gas lift cylinder into the center of the base.
- Carefully place the main seat and backrest assembly onto the gas lift cylinder.
- Attach the headrest to the top of the backrest using the provided screws.

Figure 3: Product dimensions and key components for assembly.
4. Operating Instructions
Your CAGUUU AXIS Ergo Core chair offers multiple adjustment options to customize your seating experience. Familiarize yourself with these controls for optimal comfort.
4.1 Headrest Adjustment (4D)
- Height Adjustment: Grasp the headrest and slide it up or down to your desired height.
- Depth Adjustment: Push or pull the headrest forward or backward.
- Angle Adjustment: Tilt the headrest to adjust the angle for optimal neck support.

Figure 4: 4D Headrest adjustments for personalized neck and head support.
4.2 Backrest and Lumbar Support Adjustment
- Backrest Height: Use the lever on the side of the backrest to adjust its height through 5 stages.
- Lumbar Support: The lumbar support automatically tracks your posture 360 degrees. Fine-tune its position by adjusting the movable support rails to fit your individual body type.

Figure 5: Linked support system for head, back, and waist.
4.3 Seat Adjustment
- Seat Depth: Use the lever located under the seat to slide the seat forward or backward by up to 8cm.
4.4 Armrest Adjustment (5D)
- Height: Press the button on the side of the armrest and slide it up or down.
- Forward/Backward: Slide the armrest pad forward or backward.
- Left/Right: Slide the armrest pad left or right.
- Rotation: Rotate the armrest pads inward or outward (up to 360° and 270° respectively).

Figure 6: 5D Armrest adjustments for comprehensive arm support.
4.5 Reclining Function
- Recline: Pull the recline lever (usually on the left side under the seat) to unlock the backrest. Lean back to your desired angle (up to 130 degrees) and push the lever back in to lock the position.
- Recline Tension: Adjust the tension knob (usually under the seat) to control the resistance of the recline.

Figure 7: 130-degree reclining for relaxation.
4.6 Footrest Usage
- Extend Footrest: Pull the footrest out from under the seat.
- Retract Footrest: Push the footrest back under the seat when not in use.

Figure 8: Retractable footrest for enhanced comfort.
4.7 Operational Video
Video 2: Demonstrating the 'Rest, Relax, Work' modes of the CAGUUU AXIS Ergo Core Office Chair. This video illustrates various adjustments including headrest, lumbar support, seat, and armrests, showcasing the chair's versatility.
5. Maintenance
Regular maintenance will prolong the life and appearance of your CAGUUU office chair.
- Cleaning Mesh Fabric: Gently wipe the mesh with a damp cloth and mild soap. Avoid harsh chemicals or abrasive cleaners.
- Frame Cleaning: Wipe metal and plastic parts with a soft, dry cloth.
- Caster Maintenance: Periodically check casters for hair or debris and clean as needed to ensure smooth rolling.
- Check Connections: Regularly inspect all screws and bolts to ensure they are tight. Re-tighten if necessary.
6. Troubleshooting
If you encounter any issues with your chair, please refer to the following common solutions. If the problem persists, contact customer support.
- Chair not adjusting height: Ensure the gas lift lever is fully engaged or disengaged as required. Check for any obstructions.
- Squeaking noises: Check all bolted connections and tighten them. Lubricate moving parts if necessary with a silicone-based lubricant.
- Casters not rolling smoothly: Remove any hair or debris from the caster wheels.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | CAGUUU |
| Model Number | mj002505002 |
| Color | Grey |
| Overall Dimensions (W x D x H) | 76 cm x 50 cm x 105-137 cm |
| Seat Width | 54 cm |
| Seat Depth | 39-50 cm |
| Seat Height | 45-52 cm |
| Backrest Height | 74 cm |
| Item Weight | 32 kg |
| Package Dimensions | 86 cm x 84 cm x 70 cm |
| Package Weight | 32 kg |
| Material | High-elasticity Mesh, High-density Urethane Foam |
| Batteries Required | No |
| First Available Date | 2025/07/18 |
8. Warranty and Support
CAGUUU office chairs are designed and manufactured to strict quality standards, ensuring excellent durability and comfort for long-term use.
- Warranty: All CAGUUU products come with a 5-year quality warranty from the date of purchase. This warranty covers manufacturing defects and significant deterioration of seat cushioning or other components under normal use.
- Customer Support: Should you have any questions, concerns, or dissatisfaction with your product, please do not hesitate to contact our customer service team. We are committed to providing prompt and sincere assistance.
Customer Service Email: cs@caguuu.co.jp
We appreciate your business and look forward to your continued patronage.