1. Introduction
This manual provides instructions for the installation, operation, and maintenance of your Yuecoom 48V 25A Electric Scooter Controller Kit. This kit is designed for use with KUGOO M4 and similar 10-inch electric scooters, offering stable speed control and responsive braking.
2. Safety Information
- Always disconnect the scooter's power source before installation or maintenance.
- Ensure all connections are secure and properly insulated to prevent short circuits.
- Do not expose the controller or display to water or extreme temperatures.
- Seek professional assistance if you are unsure about any installation steps.
- Verify all functions (throttle, brakes, display) are working correctly before operating the scooter.
3. Product Components
The Yuecoom 48V 25A Electric Scooter Controller Kit includes the following main components:
- Controller: The central processing unit for managing motor speed and other functions.
- Display: Provides real-time information and allows for control adjustments.
- Communication Line: Connects the controller and display.
- Wiring Sleeve: For organizing and protecting cables.

Image: Overview of the 48V 25A Electric Scooter Controller and Display components.
4. Specifications
| Voltage | 48V |
| Current | 25A |
| Controller Dimensions | Approx. 97 x 70 x 33 mm (3.8 x 2.8 x 1.3 in) |
| Display Screen Dimensions | Approx. 125 x 112 mm (4.9 x 4.4 in) |
| Total Communication Cable Length | Approx. 183 cm (72 in) |
| Display Cable Length | Approx. 100 mm (3.9 in) |
| Applicable Handlebar Diameter | 22.2 mm (0.9 in) |
| Material | Aluminum Alloy (Controller Housing), PCB Board, Plastic |
| Weight | Approx. 453g (16oz) |

Image: Detailed dimensions for the controller and display unit.
5. Installation Guide
Follow these steps to install the controller kit onto your electric scooter. Refer to the included wiring manual for specific connection diagrams.
- Prepare the Scooter: Ensure the electric scooter is powered off and the battery is disconnected.
- Remove Old Components: Carefully remove the existing controller and display, noting the connections.
- Mount the New Controller: Secure the new controller in a suitable location on the scooter. The aluminum alloy housing is designed for heat dissipation.
- Install the Display: Attach the display unit to the handlebar. Ensure it is securely clamped and positioned for easy viewing and access.

Image: Close-up of the display's handlebar clamp for secure mounting.
- Connect Wiring:
- Connect the main power cables from the controller to the scooter's battery.
- Connect the motor phase wires and Hall sensor wires from the controller to the scooter's motor.
- Connect the communication line between the controller and the display unit.

Image: Detail of the communication cable connector for the display unit.
- Connect any additional wires for brakes, lights, or other accessories as per your scooter's configuration and the wiring manual.
Note: The kit is equipped with wiring identification instructions to simplify the connection process. Ensure all connections are firm and correct.
- Organize Cables: Use the provided wiring sleeve to bundle and protect the cables, preventing entanglement and damage.
- Final Check: Double-check all connections before reconnecting the battery and powering on the scooter.
6. Operating Instructions
Once installed, operate your electric scooter using the new controller and display:
- Power On/Off: Press and hold the power button on the display to turn the scooter system on or off.
- Speed Control: Use the throttle lever (if applicable) or buttons on the display to adjust speed. The controller provides stable speed.
- Braking: The controller supports sensitive braking. Ensure your scooter's brake levers are properly connected and functioning.
- Display Information: The display shows essential information such as speed, battery level, and mode. Refer to the display's specific manual for detailed functions and settings.
- Mode Selection: Use the "MODE" button on the display to cycle through different riding modes or settings, if available.
7. Maintenance
To ensure the longevity and optimal performance of your controller kit:
- Keep Clean: Regularly wipe the display and controller housing with a dry, soft cloth. Avoid using harsh chemicals or abrasive materials.
- Check Connections: Periodically inspect all wiring connections to ensure they are secure and free from corrosion or damage.
- Avoid Overheating: The controller has good heat dissipation. Ensure it is not covered or obstructed, allowing for proper airflow.
- Protect from Moisture: While the components are designed for outdoor use, avoid prolonged exposure to heavy rain or submersion in water.
- Handle with Care: Avoid dropping or subjecting the controller and display to strong impacts.
8. Troubleshooting
If you encounter issues with your controller kit, consider the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Scooter does not power on. | Loose power connection, discharged battery, faulty display. | Check battery charge. Verify all power connections to the controller and display. |
| Motor not responding. | Loose motor phase wires or Hall sensor wires, faulty throttle. | Inspect motor connections. Test throttle functionality. |
| Display not showing information. | Loose communication cable, display power issue. | Ensure the communication line is securely connected between the controller and display. |
| Erratic speed control. | Loose connections, interference, faulty controller. | Check all wiring. Ensure no external interference. If issues persist, contact support. |
If the problem persists after attempting these solutions, please contact customer support.
9. Customer Support
For technical assistance, warranty inquiries, or replacement parts, please contact Yuecoom customer service through the retailer where the product was purchased or visit the official Yuecoom store page on Amazon.
Online Store: Yuecoom Amazon Store
Please have your product model number (48V 25A Electric Scooter Controller Kit) and purchase details ready when contacting support.





