1. Introduction
Thank you for choosing the ByteTecpeak M4 Lightweight Folding Wheelchair. This manual provides essential information for the safe and effective use, assembly, operation, and maintenance of your new wheelchair. Please read it thoroughly before first use and keep it for future reference.
The M4 wheelchair is designed for adults, offering a lightweight and foldable solution for mobility. Constructed from high-quality aluminum alloy, it combines durability with ease of transport, making it suitable for both home use and travel. It features a maximum capacity of 100kg.

The ByteTecpeak M4 Lightweight Folding Wheelchair in its open configuration.
2. Setup and Unfolding
The ByteTecpeak M4 wheelchair is designed for quick and easy setup. Follow these steps to unfold and prepare your wheelchair for use.
- Unfolding the Frame: Gently pull the backrest upwards while pushing down on the seat rails until the frame locks into place. Ensure all locking mechanisms are secure.
- Attaching Footrests: The footrests are adjustable and removable. Align the footrest pins with the corresponding holes on the front frame and push down until they click into place. Adjust the height as needed.
- Securing Cushions: Place the double-layer breathable seat cushion onto the seat. Ensure it is properly aligned and secured, typically with Velcro straps on the underside.
- Adjusting Backrest: Ensure the backrest is fully extended and secured.
Video demonstrating the unfolding, footrest attachment, and cushion placement for the ByteTecpeak M4 wheelchair.

Quick folding mechanism for easy storage and transport.
3. Operating Instructions
3.1 User Propulsion
The M4 wheelchair features a self-propelled design with smooth-rotating push rims for effortless control. The ergonomic push wheels are optimized for easy self-propulsion across various surfaces. The lightweight frame reduces the energy required for autonomous navigation.

User propelling the wheelchair independently.
3.2 Assisted Propulsion
For assisted use, the wheelchair can be easily pushed by a caregiver. The design ensures comfortable handling for both the user and the assistant.

Caregiver assisting with wheelchair propulsion.
3.3 Braking System
The M4 wheelchair is equipped with a dual front and rear braking system for maximum safety and control. Engage the brakes when stationary to prevent unintended movement.
3.4 Comfort Features
- Wide Seat: The extra-wide seat (46cm) provides enhanced comfort and freedom of movement, reducing discomfort during prolonged use.
- Breathable Cushion: The double-layer breathable cushion, made from mesh fabric and synthetic leather, ensures comfort in all seasons.
- Removable Armrests: Armrests can be easily removed for easier transfers or to fit under tables.
- Storage Pocket: A practical storage pocket is located on the backrest for water bottles, magazines, and small items.

Convenient storage pocket on the back of the wheelchair.
4. Maintenance
Regular maintenance ensures the longevity and safe operation of your ByteTecpeak M4 wheelchair.
- Cleaning: Clean the frame with a damp cloth and mild soap. Avoid abrasive cleaners. The cushions can be wiped clean.
- Wheels: The solid rubber wheels are maintenance-free and do not require inflation. Regularly check for debris or damage.
- Brakes: Periodically check the brake system for proper function. Ensure the brakes engage securely.
- Fasteners: Inspect all bolts, screws, and fasteners regularly to ensure they are tight. Tighten any loose components.
- Storage: When not in use, store the wheelchair in a dry, clean place, ideally folded to save space.
5. Troubleshooting
This section addresses common issues you might encounter with your M4 wheelchair.
| Problem | Possible Cause | Solution |
|---|---|---|
| Wheelchair does not unfold or fold smoothly. | Frame components are misaligned or obstructed. | Ensure no objects are obstructing the folding mechanism. Apply gentle, even pressure when unfolding/folding. Check for bent parts. |
| Brakes are not holding securely. | Brake mechanism needs adjustment or is worn. | Inspect the brake levers and calipers. If adjustment is needed or parts are worn, contact customer support. |
| Footrests are loose or difficult to attach. | Pins or receiving holes are dirty or damaged. | Clean the pins and holes. Ensure correct alignment before pushing to lock. If damaged, contact customer support. |
If you encounter an issue not listed here, or if the suggested solutions do not resolve the problem, please contact ByteTecpeak customer support.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | ByteTecpeak |
| Model | M4 |
| Product Dimensions (Open) | 93 cm (L) x 63 cm (W) x 101 cm (H) |
| Product Dimensions (Folded) | Approx. 72 cm (L) x 36 cm (W) x 70 cm (H) |
| Item Weight | 12 kg |
| Maximum Load Capacity | 100 kg |
| Frame Material | High-quality Aluminum Alloy |
| Seat Width | 46 cm |
| Rear Wheel Size | 20 inches (approx. 51 cm) |
| Front Wheel Size | Approx. 16 cm |
| Wheel Type | Solid Rubber (Maintenance-free) |
| Braking System | Dual Front and Rear Brakes |
| Country of Origin | China |

Detailed dimensions of the M4 wheelchair.
7. Warranty and Support
ByteTecpeak is committed to customer satisfaction. Your M4 wheelchair comes with a standard return policy allowing returns and exchanges within 30 days of purchase.
For any questions, concerns, or assistance, please contact ByteTecpeak customer support. We offer 24/7 customer support and multi-language assistance to ensure you receive the help you need.
Please refer to the product packaging for any additional warnings or instructions specific to your purchase.

ByteTecpeak customer support is available to assist you.