1. Introduction
The Yolin YL61F is an intelligent liquid crystal display designed for electric bicycle conversion kits. It provides essential riding information and control functions, enhancing your e-bike experience. This manual will guide you through its specifications, installation, operation, and maintenance.
2. Important Compatibility Information
Before purchasing or installing the YL61F LCD display, it is critical to verify compatibility with your e-bike's existing system. Different e-bike brands may use varying LCD Display communication protocols. Failure to match the correct protocol may result in the display not functioning with your e-bike.
To ensure compatibility, please locate the serial number or model information on the back of your old display and consult with customer service. This step is crucial for a successful installation.


3. Specifications
The YL61F LCD Display offers robust performance and features for your electric bicycle.
| Feature | Specification |
|---|---|
| Model No. | YL61F |
| Type | Display |
| Voltage | 36V / 48V |
| Material | ABS, LCD |
| Item Weight | 60g |
| Plug Type | 5-pin connector |
| Rated Working Current | 15mA |
| Maximum Working Current | 30mA |
| Shutdown Leakage Current | <1uA |
| Supply Current to Controller | 50mA |
| Operating Temperature | -20℃ to 60℃ |
| Storage Temperature | -30℃ to 70℃ |
Dimensions

- Top View: 66.9mm (Width) x 44.9mm (Height)
- Side View: 38.5mm (Depth)
- Handlebar Clamp Diameter: Ø22.2mm
4. Setup and Installation
This section provides general guidance for installing your YL61F LCD display. Professional installation is recommended if you are unsure about any steps.
4.1 Mounting the Display
- Choose a suitable position on your e-bike's handlebar, typically near the left grip, that allows for easy viewing and access to buttons.
- Open the clamp on the back of the display.
- Place the display onto the handlebar (suitable for Ø22.2mm diameter handlebars).
- Securely tighten the clamp screws to prevent movement during riding.

4.2 Connecting the Display
- Locate the 5-pin connector cable extending from the YL61F display.
- Identify the corresponding 5-pin connector on your e-bike's controller or wiring harness.
- Carefully align the pins and push the connectors together until they click securely into place. Ensure the connection is firm to prevent accidental disconnection.
- Route the cable neatly along the handlebar and frame, securing it with cable ties if necessary, to prevent interference with moving parts.

5. Operating Instructions
The YL61F display provides various functions to control and monitor your e-bike. Familiarize yourself with the buttons and display areas for optimal use.
5.1 Power On/Off
- To Power On: Press and hold the Power button (usually marked with a power symbol). The instrument will start, and the controller's working power will be activated.
- To Power Off: In the power-on state, long press the Power button to turn off the electric vehicle's power supply. When shut down, the display consumes less than 1uA of current.
- Automatic Shutdown: If the e-bike is not used for more than 10 minutes, the display will automatically shut down to conserve battery.
5.2 Functional Areas of the Display

- Battery Level: Indicates the remaining battery charge.
- Speed Display: Shows real-time speed, maximum speed (MAXS), and average speed (AVG). Speed unit can be set to MPH or KM/H.
- PAS Level: Displays the current Pedal Assist System (PAS) level.
- Mileage Display: Includes single trip mileage (TRIP) and total odometer (ODO).
- Walk Boost: Activates a low-speed assist for walking the bike.
- Cruise Control: Indicates when cruise control is active.
- Light ON/OFF: Indicates the status of the e-bike's headlights.
- Error Code Display: Shows error codes if a system fault occurs.
5.3 Button Functions

- Power Button: Long press to power on/off the display and e-bike system.
- '+' Button: Typically used to increase PAS level, navigate menus upwards, or increase values during settings.
- '-' Button: Typically used to decrease PAS level, navigate menus downwards, or decrease values during settings.
- Mode Button: Used to cycle through display modes (e.g., Trip, ODO, Max Speed, Avg Speed) and to enter/exit settings menus.
5.4 Personalized Parameter Settings
The YL61F allows for customization of various parameters. Specific instructions for accessing and adjusting these settings are typically found in a detailed programming guide or by consulting customer support. Parameters may include:
- Wheel diameter
- Speed limit
- Rated voltage setting
- Number of magnets of power sensor
- Mileage unit setting (Metric/Imperial)
- Current limit setting of controller
- Factory default parameter restoration function
6. Maintenance
Proper maintenance will ensure the longevity and optimal performance of your YL61F LCD display.
- Cleaning: Use a soft, damp cloth to wipe the display screen and body. Avoid using abrasive cleaners, solvents, or harsh chemicals that could damage the screen or casing.
- Protection: Protect the display from direct sunlight for prolonged periods, extreme temperatures, and heavy rain. While designed for outdoor use, excessive exposure can reduce lifespan.
- Connections: Periodically check that the 5-pin connector is securely attached and free from corrosion or damage.
- Storage: If storing your e-bike for an extended period, ensure the display is powered off.
7. Troubleshooting
If you encounter issues with your YL61F LCD display, refer to the following common troubleshooting steps.
7.1 Display Not Powering On
- Check Battery: Ensure your e-bike's battery is charged and properly connected.
- Check Connections: Verify that the 5-pin connector between the display and the controller is securely plugged in.
- Power Button: Confirm you are pressing and holding the power button for a sufficient duration (typically a few seconds).
7.2 Display Shows Incorrect Information or No Data
- Compatibility: Re-verify that the display's communication protocol is compatible with your e-bike's controller. This is the most common reason for incorrect data or non-functionality. Refer to Section 2.
- Sensor Issues: If speed or mileage is incorrect, check the speed sensor and its magnet on your wheel for proper alignment and function.
- Parameter Settings: Ensure that personalized parameters like wheel diameter are correctly set (refer to Section 5.4).
7.3 Error Codes
The YL61F display has an error code display function. If an error code appears on the screen, note the code and consult your e-bike's controller manual or contact customer support for specific interpretations and solutions. Common error codes often relate to motor, controller, or sensor malfunctions.
7.4 Incorrect Pin Count (e.g., 6-pin vs. 5-pin)
The YL61F display uses a 5-pin connector. If your e-bike system requires a 6-pin or other connector type, this display will not be compatible. Always confirm the required pin configuration before purchase. If you have purchased a 5-pin display but need a different configuration, contact your seller for assistance.
8. User Tips
- Verify Compatibility: Always double-check the communication protocol and pin configuration (e.g., 5-pin) of your e-bike's controller before purchasing a replacement display. This is the most frequent cause of installation issues.
- Keep Old Display Info: If replacing an old display, take a photo of the back of the unit, specifically the serial number and model information, as this is crucial for ensuring compatibility with a new display.
- Consult Customer Service: If you are unsure about compatibility or encounter persistent issues, contact the seller's customer service with your e-bike's details and the display's serial number.
9. Warranty and Support
The Yolin YL61F LCD Display comes with a one-year free warranty for common product issues. Yolin is committed to providing comprehensive after-sales service to assist customers with any problems encountered during use.
For technical support, warranty claims, or any questions regarding your YL61F display, please contact the seller or manufacturer directly. Be prepared to provide your purchase details and the product's model number (YL61F) and serial number.





