1. Introduction
Thank you for purchasing the Okamura 8CB5KA-FMU6 Compact Study Chair. This manual provides essential information for the safe and efficient use of your new chair, including assembly instructions, operational guidelines, maintenance tips, and troubleshooting advice. Please read this manual thoroughly before assembly and use, and keep it for future reference.
Figure 1.1: Okamura 8CB5KA-FMU6 Compact Study Chair (Brown variant).
This image shows the Okamura 8CB5KA-FMU6 Compact Study Chair in a brown fabric finish. The chair features a five-star base with casters for mobility, a height-adjustable gas lift, and a contoured backrest and seat designed for comfort in compact workspaces.
2. Safety Information
To ensure safe operation and prevent injury or damage, please observe the following safety precautions:
- Maximum Load Capacity: Do not exceed the maximum recommended load of 220 pounds (approximately 100 kg).
- Assembly: Assemble the chair strictly according to the instructions provided. Ensure all screws and fasteners are securely tightened before use.
- Stability: Do not stand on the chair. Avoid leaning excessively to one side or backward, as this may cause the chair to tip over.
- Children: Keep children away from the chair during assembly. Do not allow children to play on or around the chair unsupervised.
- Moving the Chair: When moving the chair, lift it rather than dragging it to prevent damage to the casters or flooring.
- Maintenance: Regularly inspect the chair for loose parts, wear, or damage. Discontinue use if any damage is found and contact customer support.
- Environment: Use the chair on a flat, stable surface. Avoid exposure to extreme temperatures or direct sunlight for prolonged periods.
3. Product Overview and Components
The Okamura 8CB5KA-FMU6 chair is designed for compact spaces, offering comfort and functionality for telework or study. Key components include:
- Backrest: Contoured for support, upholstered in polyester fabric.
- Seat: Plywood base with urethane foam cushioning, upholstered in polyester fabric.
- Gas Spring Cylinder: Allows for smooth height adjustment of the seat.
- Base: Five-star polyamide leg base for stability.
- Casters: Rolling wheels for easy movement across various floor types.
- Adjustment Lever: Located under the seat for height and backrest tension adjustments.
Figure 3.1: The Okamura 8CB5KA-FMU6 chair in a typical home office environment.
This image displays the Okamura 8CB5KA-FMU6 chair, highlighting its compact design and how it integrates into a home office setup. The chair is shown with a light gray fabric, emphasizing its minimalist aesthetic and suitability for smaller spaces.
4. Setup and Assembly
Assembly is required for this chair. Please follow these steps carefully. It is recommended to assemble the chair on a soft, clean surface to prevent scratches.
- Unpack Components: Carefully remove all parts from the packaging and lay them out. Verify that all components listed in the packing list are present.
- Assemble the Base: Insert the casters into the holes at the end of each leg of the five-star base. Ensure they are securely seated.
- Insert Gas Spring: Place the gas spring cylinder into the center hole of the assembled five-star base.
- Attach Backrest to Seat: Align the backrest with the seat mechanism. Secure the backrest to the seat using the provided screws and the Allen wrench. Ensure the screws are tightened firmly but do not overtighten.
- Connect Seat Assembly to Base: Carefully place the assembled seat and backrest unit onto the top of the gas spring cylinder. The seat mechanism will slide onto the cylinder. Apply gentle downward pressure to secure it.
- Final Check: Test the chair's stability and all adjustment functions before regular use. Ensure all connections are secure.
5. Operating Instructions and Adjustments
The Okamura 8CB5KA-FMU6 chair offers simple adjustments to customize your seating experience:
- Seat Height Adjustment:
To raise the seat, lift the adjustment lever located under the right side of the seat while taking your weight off the chair. The seat will rise automatically. To lower the seat, lift the same lever while remaining seated. The seat will descend under your weight. Release the lever to lock the height in place.
Figure 5.1: Adjusting seat height for optimal ergonomic posture.
This image illustrates a user adjusting the seat height of the Okamura chair. The gas spring mechanism allows for smooth vertical movement, enabling users to find their ideal seating position relative to their desk and body height.
- Backrest Rebound Strength Adjustment:
The backrest's responsiveness can be adjusted to your preference. Turn the adjustable handle located under the seat (typically on the left side or near the main lever) to increase or decrease the tension of the backrest tilt. Turn clockwise to increase tension (firmer recline) and counter-clockwise to decrease tension (easier recline).
Figure 5.2: Detail of the chair's fabric and adjustment mechanism.
This close-up image highlights the texture of the chair's polyester fabric and the adjustment lever located beneath the seat. This lever controls both the seat height and the backrest's rebound strength, allowing for personalized comfort settings.
- Mobility:
The chair is equipped with rolling casters for easy movement. Ensure the floor surface is clear of obstructions to prevent damage to the casters or flooring.
6. Maintenance
Proper maintenance will extend the life of your Okamura chair:
- Cleaning: Wipe clean with a damp cloth. For stubborn stains on fabric, use a mild upholstery cleaner and follow the product instructions. Do not use abrasive cleaners or harsh chemicals.
- Regular Inspection: Periodically check all screws and fasteners to ensure they are tight. Re-tighten if necessary, but do not overtighten.
- Caster Care: Keep casters free of hair, dust, and debris to ensure smooth rolling. Clean them regularly.
- Avoid Overloading: Adhere to the maximum weight capacity to prevent structural damage.
7. Troubleshooting
If you encounter issues with your chair, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Seat does not adjust height or sinks unexpectedly. | Gas spring cylinder malfunction or damage. | Ensure the adjustment lever is fully engaged. If the issue persists, the gas spring may need replacement. Contact customer support. |
| Chair makes loud noises (e.g., creaking, clunking). | Loose screws or fasteners; friction between components. | Check and re-tighten all assembly screws. Do not overtighten. Lubricate moving parts if necessary with a silicone-based spray. |
| Casters do not roll smoothly. | Debris (hair, dust) caught in casters; damaged casters. | Clean casters thoroughly. If damaged, casters may need replacement. |
| Chair feels unstable or wobbly. | Loose connections; uneven floor. | Verify all screws are tight. Ensure the chair is on a flat, level surface. |
8. Specifications
Detailed specifications for the Okamura 8CB5KA-FMU6 Compact Study Chair:
- Model: 8CB5KA-FMU6
- Brand: Okamura
- Maximum Recommended Load: 220 Pounds (approx. 100 kg)
- Product Dimensions (Overall): 56 cm (Depth) x 56 cm (Width) x 75.5-84.7 cm (Height)
- Seat Dimensions:
- Seat Width: 46 cm (18.1 inches)
- Seat Depth: 52 cm (20.5 inches)
- Seat Height Range: 38-47.2 cm (15.0-18.6 inches)
- Leg Diameter: 56 cm (22.0 inches)
- Materials:
- Upholstery: Polyester
- Seat Base: Plywood
- Back: Polypropylene
- Leg: Polyamide
- Cushion: Urethane foam
- Frame Material: Metal (for structural components)
- Finish Types: Powder Coated (frame)
- Form Factor: Desk Chair
- Back Style: Solid Back
- Special Features: Adjustable Height, Rolling (Arm Rest and Cushion Availability may vary by specific variant)
- Assembly Required: Yes
Figure 8.1: Chair dimensions shown in a room setting.
This image provides a visual representation of the chair's dimensions (seat width 46cm, height 75.5-84.7cm, leg diameter 56cm) within a room, helping users understand its compact footprint and how it fits into various spaces.
Figure 8.2: Side view with detailed measurements.
This diagram shows the side profile of the Okamura chair, detailing its seat depth (425 mm), overall height range (755-847 mm), and leg diameter (560 mm), providing precise measurements for planning placement.
Figure 8.3: Front view with detailed measurements.
This diagram presents the front view of the Okamura chair, indicating the backrest width (375 mm), seat width (460 mm), and seat height range (380-472 mm), offering comprehensive dimensional data.
9. Warranty and Support
For information regarding warranty coverage, please refer to the documentation provided at the time of purchase or contact your retailer. For technical support or replacement parts, please reach out to Okamura customer service through their official website or the contact information provided by your point of purchase.