1. Introduction
This manual provides essential information for the safe and effective operation of your FLYLINKTECH JF-H-40DC 2-in-1 Folding Treadmill. Please read this manual thoroughly before using the product and retain it for future reference. This treadmill is designed for home use, offering both walking pad and traditional treadmill functionalities.
2. Safety Instructions
- Always consult with a physician before starting any exercise program.
- Place the treadmill on a flat, stable surface with adequate clearance around it.
- Ensure the safety key is properly attached before starting the treadmill.
- Wear appropriate athletic footwear during use.
- Keep children and pets away from the treadmill during operation.
- Do not use the treadmill if it is damaged or malfunctioning.
- Unplug the treadmill from the power outlet when not in use or before cleaning/maintenance.
- The maximum user weight capacity for this model is 220 pounds (approximately 100 kg).
3. Product Features
The FLYLINKTECH JF-H-40DC treadmill offers versatile exercise options with its 2-in-1 design, allowing for both walking and running modes. It features a powerful yet quiet motor and a multi-layered running belt for comfort and safety.

Image: The FLYLINKTECH JF-H-40DC treadmill shown in its compact walking pad configuration and its upright running mode with handlebars.
3.1. Dual Functionality: Walking Pad & Treadmill
This unit transitions between a compact walking pad and a full-feature treadmill with an upright handle. The walking mode supports speeds from 0.6 mph to 2.5 mph, ideal for light exercise or under-desk use. The running mode, with the handle raised, allows for speeds up to 8.7 mph.

Image: Visual comparison of the treadmill in running mode (with handles) and walking mode (flat), indicating respective speed ranges.
3.2. Quiet and Powerful Motor
Equipped with a 2.25HP low-noise motor, the treadmill operates quietly (below 60dB), making it suitable for home or office environments without causing disturbance. It supports a weight capacity of up to 220 pounds (approximately 100 kg).

Image: Diagram highlighting the 2.25HP low-noise motor, quiet operation (under 60dB), and speed range of 0.6-8.7 MPH. Note: The image indicates a 180kg weight capacity, but the product specifications state 220 pounds (approx. 100 kg).
3.3. Advanced Running Belt
The running belt is designed with multiple layers to provide a non-slip surface, shock absorption, and multi-layer damping, which helps protect your knees during exercise. The running area measures 16 inches x 40 inches (420mm x 1050mm).

Image: An exploded view diagram illustrating the five layers of the running belt: wear-resistant surface, noise reduction layer, high strength reinforcement layer, EVA shock absorption layer, and high strength compression layer.
4. Setup
The FLYLINKTECH JF-H-40DC treadmill requires no assembly. It arrives pre-assembled and ready for immediate use. Simply unpack the unit and place it on a level surface.
4.1. Unfolding and Positioning
- Carefully remove the treadmill from its packaging.
- If using in walking pad mode, ensure the handle is folded down.
- If using in running mode, raise the handle until it locks securely into place.
- Position the treadmill on a flat, stable floor, ensuring at least 2 feet of clear space behind it and 1 foot on each side.
- Connect the power cord to a grounded electrical outlet.
4.2. Storage
The treadmill features a foldable design for easy storage. It can be folded flat and stored under furniture, such as a sofa, requiring only 4 inches of vertical clearance. It also has wheels for convenient movement.

Image: The treadmill shown in its folded state, illustrating its compact dimensions (49.8 inches length, 25.4 inches width, 42 inches height when folded upright, and 4 inches height when stored flat) and how it fits under a sofa.
5. Operating Instructions
5.1. Control Panel and LED Display
The treadmill features an integrated LED display that shows key workout metrics such as speed, time, distance, and calories burned. Touch screen buttons allow for direct control.

Image: Close-up of the treadmill's console, detailing the LED digital monitor, device holder, touch screen buttons, and a security lock feature.
5.2. Remote Control
The included remote control provides convenient access to all functions, including starting/stopping the treadmill, adjusting speed, and selecting preset programs. It allows for hands-free operation during your workout.
5.3. App Control
Connect your treadmill to the 'Fit Show' app via Bluetooth for professional fitness courses, real-time recording of exercise data, and sharing your progress. The app is available on both Google Play and the App Store.

Image: The remote control and a smartphone screen displaying the 'Fit Show' app interface, showing options for connecting, smart fitness, and remote control, along with download links for Google Play and the App Store.
5.4. Walking Mode (Under-Desk Use)
In walking mode, with the handle folded, the treadmill functions as an under-desk walking machine. This allows you to maintain physical activity while working or engaging in other sedentary tasks. The speed range in this mode is 0.6 mph to 2.5 mph.

Image: A person using the treadmill in its flat, walking pad configuration underneath a standing desk, demonstrating its use for exercising while working.
5.5. Running Mode
For running, ensure the handle is fully extended and locked. This mode supports higher speeds, from 2.5 mph up to 8.7 mph, suitable for more intense cardiovascular workouts.
5.6. Preset Programs
The treadmill includes 12 preset programs designed to vary your workout intensity and duration. Refer to the LED display section for program selection and details.
6. Maintenance
- Cleaning: Regularly wipe down the treadmill with a damp cloth. Do not use abrasive cleaners or solvents.
- Lubrication: Periodically lubricate the running belt according to the instructions provided in the separate lubrication guide (if applicable) or as recommended by the manufacturer.
- Belt Adjustment: Check the running belt tension and alignment regularly. Adjust if necessary to ensure smooth operation and prevent wear.
- Storage: When not in use for extended periods, fold the treadmill and store it in a dry, clean area away from direct sunlight.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Treadmill does not start. | Power cord not connected, safety key not in place, power switch off. | Ensure power cord is securely plugged in, safety key is attached, and power switch is on. |
| Running belt slips or hesitates. | Belt too loose, belt needs lubrication, user weight exceeds limit. | Adjust belt tension, lubricate the belt, ensure user weight is within specifications. |
| Unusual noise during operation. | Loose parts, belt misalignment, motor issue. | Check for loose screws, adjust belt alignment, contact customer support if noise persists. |
| Remote control not responding. | Dead batteries, remote out of range, interference. | Replace batteries, ensure remote is within operating range, remove obstructions. |
8. Specifications
- Brand: FLYLINKTECH
- Model: JF-H-40DC
- Motor: 2.25 HP
- Speed Range: 0.6 - 8.7 mph (1 - 14 km/h)
- Weight Capacity: 220 pounds (approx. 100 kg)
- Running Area: 16 x 40 inches (420 x 1050 mm)
- Material: Alloy Steel
- Product Dimensions (Unfolded): 141.99 x 73.66 x 14.73 cm (approx. 55.9 x 29 x 5.8 inches)
- Product Weight: 24.72 kg (approx. 54.5 pounds)
- Color: Black
9. Warranty and Support
The manufacturer offers a 2-year warranty for this product. For warranty claims, technical support, or any inquiries regarding your FLYLINKTECH JF-H-40DC treadmill, please contact the seller or manufacturer directly through the platform where you purchased the product.
A general introduction video for a 3-way room runner, demonstrating features like quick setup, walking and running modes, quiet operation, and compact storage, is provided below. While this video may feature a different model (BW-SRM16M), the general functionalities and benefits shown are applicable to similar 2-in-1 folding treadmills.
Video: An introductory video showcasing a 3-way room runner, highlighting its quick setup, versatility for walking and running, quiet motor, and ability to be stored compactly. This video is provided by the seller and illustrates general features relevant to folding treadmills.
For specific support, please refer to the contact information provided with your purchase or visit the official FLYLINKTECH store on Amazon: FLYLINKTECH Store.





