1. Introduction
Thank you for choosing the Osaki OS-4000LS Zero Gravity Heated Massage Chair. This manual provides essential information for the safe and effective use, assembly, operation, and maintenance of your massage chair. Please read this manual thoroughly before using the product and retain it for future reference.
The Osaki OS-4000LS features an advanced L-track massage system, extending from your neck down to your glutes and thighs. It incorporates zero gravity recline, space-saving technology, foot rollers, 24 airbag compression massage, body scan technology, and adjustable shoulder massage for a comprehensive relaxation experience.
2. Important Safety Instructions
WARNING: To reduce the risk of burns, fire, electric shock, or injury to persons:
- Always unplug the chair from the electrical outlet immediately after using and before cleaning.
- Do not use while bathing or in a shower.
- Do not place or store appliance where it can fall or be pulled into a tub or sink.
- Do not place in or drop into water or other liquid.
- Never use pins or other metallic fasteners with this appliance.
- Close supervision is necessary when this appliance is used by, on, or near children, invalids, or disabled persons.
- Use this appliance only for its intended use as described in this manual. Do not use attachments not recommended by the manufacturer.
- Never operate this appliance if it has a damaged cord or plug, if it is not working properly, if it has been dropped or damaged, or dropped into water. Contact customer service for examination and repair.
- Keep the cord away from heated surfaces.
- Never operate the appliance with the air openings blocked. Keep the air openings free of lint, hair, and the like.
- Never drop or insert any object into any opening.
- Do not use outdoors.
- Do not operate where aerosol (spray) products are being used or where oxygen is being administered.
- To disconnect, turn all controls to the OFF position, then remove plug from outlet.
- Do not stand on or in the appliance. Use only while seated.
- Do not use on sensitive skin areas or in the presence of poor circulation.
- Do not use on infants, invalids, sleeping or unconscious persons.
- Do not use if you have any medical conditions without consulting your doctor.
3. Setup and Assembly
The Osaki OS-4000LS massage chair is delivered in two main boxes for easier handling. While assembly is designed to be straightforward, it is recommended to have at least two people for moving the main frame due to its weight.
3.1 Unboxing and Positioning
- Carefully open both boxes and remove all packaging materials. Inspect all components for any signs of damage.
- Locate the main chair frame. Utilize the built-in rollers at the bottom of the chair to carefully maneuver it to your desired location. Ensure there is sufficient space around the chair for recline functions, especially considering its space-saving technology.
- Place the chair on a flat, stable surface.
3.2 Component Assembly
Follow the specific assembly instructions provided in the separate assembly guide included with your chair. Typically, this involves:
- Attaching the footrest assembly to the main chair frame.
- Connecting any necessary cables between the footrest and the main unit.
- Securing the side panels or armrests, if they are separate components.
- Connecting the power cord to the chair and then to a grounded electrical outlet.
Image 1: Osaki OS-4000LS Massage Chair, fully assembled.
4. Operating Instructions
Familiarize yourself with the control panel (typically located on the armrest or a tethered remote) to operate your massage chair.
4.1 Power On/Off
- Press the POWER button to turn the chair on. The chair will typically perform an initial body scan.
- Press the POWER button again to turn the chair off.
4.2 Body Scan Technology
Upon activation, the OS-4000LS utilizes advanced body scan technology to map your unique body shape and adjust the massage rollers for optimal coverage and intensity. Ensure you are seated correctly for an accurate scan.
Image 2: Illustration of the Computer Body Scan feature.
4.3 Zero Gravity Recline
Activate the Zero Gravity function using the dedicated button on the control panel. This position elevates your legs above your heart, distributing your body weight evenly and reducing pressure on the spine for a deeper massage experience.
Image 3: The chair in a Zero Gravity Recline position.
4.4 Massage Programs and Styles
The OS-4000LS offers various preset massage programs and 6 distinct massage styles. Use the control panel to select your desired program or customize your massage:
- Preset Programs: Choose from a selection of automatic programs designed for different needs (e.g., full body, relaxation, stretch).
- Manual Control: Adjust massage techniques (e.g., Kneading, Tapping, Shiatsu), intensity, speed, and roller width.
- L-Track Massage: Experience comprehensive massage coverage from your neck to your glutes and thighs.
Image 4: Diagram illustrating the L-Track Massage system.
Image 5: Visual representation of the 6 available massage styles.
4.5 Airbag Compression Massage
The chair features 24 airbags strategically placed to provide compression massage to various body parts. Adjust the intensity of the airbag massage as desired.
Image 6: Diagram highlighting the 24 Airbag compression system.
4.6 Foot Rollers and Extendable Ottoman
The footrest includes foot rollers for a soothing foot massage. The ottoman is spring-loaded and extendable to accommodate users of different heights. Always wear socks when using the foot rollers, as the covers are not removable for washing.
4.7 Lumbar Heating Pad
Activate the lumbar heating function for gentle warmth that helps to relax muscles in the lower back area.
Image 7: Illustration of the Lumbar Heating Pad location.
4.8 Adjustable Outer Shoulder Massage
The shoulder massage components can be adjusted to fit various shoulder widths, ensuring a personalized massage experience.
Image 8: Depiction of the Adjustable Outer Shoulder Massage feature.
4.9 USB Charging Station
A convenient USB charging port is integrated into the chair, allowing you to charge your devices while enjoying a massage.
5. Maintenance and Care
Proper maintenance ensures the longevity and optimal performance of your massage chair.
- Cleaning: Unplug the chair before cleaning. Wipe the chair's surface with a soft, damp cloth. Do not use abrasive cleaners, solvents, or harsh chemicals.
- Foot Roller Covers: The foot roller covers are not removable for washing. Always wear socks when using the foot massage function to keep the area clean.
- Storage: If storing the chair for an extended period, unplug it and cover it to protect it from dust. Store in a cool, dry place.
- Power Cord: Regularly inspect the power cord for any damage. If damaged, contact customer support immediately.
6. Troubleshooting
If you encounter any issues with your Osaki OS-4000LS massage chair, please refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair does not power on. | Power cord not properly connected; power outlet issue; main power switch off. | Ensure power cord is securely plugged into both the chair and a working electrical outlet. Check the main power switch on the chair. Test the outlet with another device. |
| Massage rollers are not moving or are stuck. | Obstruction in the roller path; temporary system error. | Turn off the chair, unplug it, and check for any obstructions. Plug it back in and restart. If the issue persists, contact customer support. |
| Airbags are not inflating or deflating properly. | Air hose disconnected; pump malfunction; system error. | Check for any visible disconnected air hoses (refer to assembly guide). Restart the chair. If the problem continues, contact customer support. |
| Foot rollers cause discomfort. | High intensity setting; sensitive feet. | Reduce the intensity of the foot massage. Ensure you are wearing socks. If pain persists, discontinue use of the foot rollers. |
If these solutions do not resolve the issue, please contact Osaki customer support for further assistance.
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | OS-4000LS |
| Item Weight | 250 pounds |
| Product Dimensions (L x W x H) | 63 x 30 x 47 inches |
| Massage Track | L-Track |
| Recline Function | Zero Gravity, Space Saving |
| Airbag System | 24 Airbags |
| Heating Function | Lumbar Heating Pad |
| Additional Features | Foot Rollers, Extendable Ottoman, Body Scan Technology, USB Charging Station, Adjustable Shoulder Massage |
8. Warranty and Support
The Osaki OS-4000LS massage chair comes with a manufacturer's warranty. Please refer to the warranty card included with your purchase for specific terms, conditions, and duration of coverage. Retain your proof of purchase for warranty claims.
For technical support, warranty service, or any questions regarding your massage chair, please contact Osaki customer service. Contact information can typically be found on the manufacturer's website or on your warranty documentation.
When contacting support, please have your model number (OS-4000LS) and purchase date readily available.
