Important Disclaimer
This YL91F LCD display meter is specifically designed for CMACEWHEEL brand electric bikes only. Compatibility with other brands is not guaranteed. If you are using a different brand of electric bike, please consult your bike manufacturer or seller for compatible display units.
Product Overview
The YL91F LCD Display Meter provides essential information for your CMACEWHEEL electric bike, including speed, battery status, pedal-assist level, and trip data. It features a clear digital readout and an integrated USB charging port for convenience.


Setup and Installation
- Mounting: Securely attach the display meter to your CMACEWHEEL bike's handlebar using the integrated mount. Ensure it is positioned for optimal visibility and does not obstruct your view or controls.
- Connection: Locate the corresponding 6-pin connector on your CMACEWHEEL electric bike's wiring harness. Carefully align and connect the display meter's 6-pin cable to this port. Ensure a firm and secure connection.
- Power On: Once connected, power on your electric bike. The display should illuminate and show initial readings.
Operating Instructions
The YL91F display provides real-time data to enhance your riding experience. Familiarize yourself with the various indicators:
- Battery Level: Indicated by a percentage (e.g., 100%) and a graphical bar, showing the remaining charge.
- Speed: Displays current speed in KM/H or MPH.
- PAS Level: Shows the current Pedal Assist System level (e.g., '3' for level 3). This typically ranges from 1 to 5, indicating the motor's assistance level.
- ERROR Indicator: Illuminates if a system error is detected. Refer to the Troubleshooting section for more details.
- ODO (Odometer): Total distance traveled by the bike.
- TRIP: Distance traveled during the current ride. This can usually be reset.
- MAX (Maximum Speed): The highest speed recorded during the current ride.
- AVG (Average Speed): The average speed maintained during the current ride.
- WhAhV: Displays Watt-hour, Amp-hour, or Voltage, providing insights into power consumption or battery state.
- USB Charging Port: Located on the display unit, this port allows you to charge small electronic devices (e.g., smartphones) while riding.
Maintenance
- Cleaning: Use a soft, damp cloth to clean the display screen. Avoid abrasive cleaners or solvents that could damage the screen or casing.
- Protection: While designed for outdoor use, avoid prolonged exposure to heavy rain or extreme temperatures.
- Connections: Periodically check that the 6-pin connector is securely attached and free from dirt or corrosion.
Troubleshooting
- Display Not Turning On: Ensure the 6-pin connector is fully seated. Check your e-bike's main power supply and battery connection.
- 'ERROR' Indicator On: If the 'ERROR' indicator is displayed, it signifies a system fault. First, check all visible connections to the motor, battery, and controller. If the error persists, power cycle the bike (turn off and on). If the issue continues, contact CMACEWHEEL support or your seller for further diagnosis.
- Incorrect Speed/Distance Readings: Verify that the wheel size setting (if adjustable) matches your bike's wheel size. Ensure the speed sensor on your bike is clean and properly aligned.
Specifications
| Feature | Detail |
|---|---|
| Model | YL91F |
| Compatibility | CMACEWHEEL Electric Bikes (also noted for 2-motor bikes) |
| Connector Type | 6-pin |
| Display Indicators | Battery Level (%), Speed (KM/H, MPH), Error, PAS Level, ODO, TRIP, MAX, AVG, WhAhV |
| Additional Features | Integrated USB Charging Port |
| Origin | Mainland China |
User Tips
- Always ensure the display is securely mounted before riding to prevent damage from vibrations or impacts.
- Regularly check the battery level on the display to avoid unexpected power loss during your ride.
- Utilize the USB charging port for emergency charging of small devices, but be mindful of your e-bike's battery consumption.
Warranty and Support
For warranty claims, technical support, or further assistance with your YL91F LCD Display Meter, please contact the seller, Jaronoon Store, or CMACEWHEEL customer service directly. Keep your purchase receipt as proof of purchase.





