Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your YARD FORCE Classic 500B Robotic Lawnmower. Please read this manual thoroughly before using the product and keep it for future reference.
The YARD FORCE Classic 500B is designed to maintain lawns up to 500 m², featuring Bluetooth connectivity for app control, a rain sensor, and a brushless motor for quiet and powerful performance. Its mulching system returns fine grass clippings to the lawn as natural fertilizer.
Safety Information
Always prioritize safety when operating and maintaining your robotic lawnmower. Failure to follow safety instructions can result in serious injury or damage to the product.
- Read all instructions carefully before use.
- Keep children and pets away from the working area.
- Do not operate the mower without the boundary wire properly installed.
- Never lift the mower while the blades are rotating.
- Turn off the mower and remove the safety key before performing any maintenance or cleaning.
- Use only original YARD FORCE spare parts and accessories.
- Do not expose the charging station or power supply to water or extreme weather conditions.
Setup
1. Unboxing and Package Contents
Carefully unpack all components and verify against the package contents list:
- 1x Robotic Lawnmower
- 1x Charging Station
- 120m Perimeter Wire
- 150 pcs. Fixing Pegs
- 9m Power Cable
- 6 pcs. Spare Blades
- 3 Spare Screws
- 3 Cable Connectors
- Spacer Ruler
- User Manual
2. Charging Station Placement
Select a flat area with access to a power outlet, preferably in the shade. Ensure there is sufficient clear space around the charging station for the mower to dock easily.
3. Boundary Wire Installation
The boundary wire defines the mowing area. Lay the wire around the perimeter of your lawn, securing it with the provided fixing pegs. Maintain a minimum distance from obstacles as specified in the full manual. Connect the ends of the boundary wire to the charging station.

4. Initial Charge
Place the robotic lawnmower into the charging station. Ensure it makes proper contact with the charging terminals. Allow the mower to fully charge before its first operation. The LED indicator on the charging station will show the charging status.
Operating Instructions
1. Control Panel Overview
The mower features an intuitive control panel for direct operation and programming.


2. Starting and Stopping
To start, ensure the safety key is inserted, then press the 'START' button. To stop the mower immediately, press the large red 'STOP' button located on the top of the unit.

3. Programming Mowing Schedules
Use the control panel or the dedicated YARD FORCE app to set daily or weekly mowing schedules. You can define specific start times and durations for each mowing session.
4. Bluetooth App Control
Download the YARD FORCE app to your smartphone. Connect via Bluetooth for convenient control, scheduling, and monitoring of your robotic lawnmower from up to 50 meters away.

5. Rain Sensor
The integrated rain sensor detects precipitation and automatically sends the mower back to its charging station, preventing operation in wet conditions. You can adjust the sensitivity or disable this feature via the app or control panel if desired.
Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of your robotic lawnmower.
1. Blade Replacement
The blades should be inspected regularly and replaced when dull or damaged. Always wear protective gloves and ensure the mower is powered off and the safety key is removed before handling blades. The package includes 6 spare blades and 3 spare screws.

2. Cleaning
Clean the mower's chassis, wheels, and cutting deck regularly to prevent grass buildup. Use a soft brush or cloth. Do not use high-pressure water jets directly on the mower.
3. Battery Care
The mower is equipped with a 28V, 2.0 Ah Lithium-ion battery. For long-term storage, ensure the battery is fully charged and store the mower in a dry, frost-free environment. Avoid completely draining the battery for extended periods.
4. Winter Storage
Before winter, thoroughly clean the mower and charging station. Store them indoors in a dry, protected area. Disconnect the boundary wire from the charging station.
Troubleshooting
This section addresses common issues you might encounter with your YARD FORCE Classic 500B.
| Problem | Possible Cause | Solution |
|---|---|---|
| Mower does not start | Safety key not inserted; Battery low; STOP button pressed. | Insert safety key; Charge battery; Release STOP button. |
| Mower stays in charging station | Rain sensor activated; No schedule set; Boundary wire issue. | Check rain sensor settings; Set a mowing schedule; Inspect boundary wire connection. |
| Uneven cutting result | Dull or damaged blades; Incorrect cutting height. | Replace blades; Adjust cutting height. |
| Mower gets stuck frequently | Obstacles in mowing area; Steep slopes; Uneven terrain. | Clear obstacles; Adjust boundary wire; Level uneven areas. |
For more detailed troubleshooting, refer to the comprehensive manual or contact customer support.
Specifications
| Feature | Detail |
|---|---|
| Model | Classic 500B |
| Brand | Yard Force |
| Recommended Lawn Area | Up to 500 m² |
| Battery Type | Lithium-ion |
| Battery Voltage / Capacity | 28 V / 2.0 Ah |
| Cutting Width | 18 cm |
| Cutting Height | 20 mm - 60 mm (5 levels) |
| Motor Type | Brushless |
| Connectivity | Bluetooth (App Control) |
| Special Features | Edge cutting function, Mulching system, Rain sensor |
| Dimensions (L x W x H) | 57.3 x 42.4 x 24.8 cm |
| Weight | 8.76 kg |
| Material | Plastic |
| Manufacturer | Sumec |
| Spare Parts Availability | 5 Years |
Warranty Information
Your YARD FORCE Classic 500B Robotic Lawnmower comes with a manufacturer's warranty. Please refer to the warranty card included in your package for specific terms and conditions, including coverage duration and claim procedures. Keep your proof of purchase for warranty claims.
Spare parts are available for a period of 5 years from the date of purchase.
Customer Support
If you have any questions, require technical assistance, or need to order spare parts, please contact YARD FORCE customer support. Contact details can typically be found on the manufacturer's website or in the warranty documentation provided with your product.
For online resources and FAQs, visit the official Yard Force website.





