YL81F instrument
R5 PRO/RX80/RX90/U8/AZ20 before 2025.01
1. Press + and - at the same time to enter setting mode
2. Press the + button to switch the page to 08P
3. Press the - button to adjust the speed to 25KM/H / Press + key to increase speed
YL-81F new version instrument
R5 PRO/RX80/RX90/U8/AZ20 after 2025.01
YL-81F instrument new version of the second-level speed limit release:
1. Press and hold the ➕➖ keys at the same time to enter the parameter interface, and then press and hold the ➕➖ keys again to enter the password interface
2. Enter the password: 2847 (press the ➕ or ➖ key to enter the password, and press the i key to switch to the next digit) to enter the speed limit interface
3. After entering, press the i key, the value below flashes, and press or hold the ➕ key to adjust the speed limit value
4. Press and hold the i key again to save and exit
YL61C instrument
AZ26/U2/RX70/RX20/H1
1. After turning on the instrument, press and hold the ➕➖ keys at the same time to enter the parameter setting
2. then short press the power button to 08P, short press the power button, the value below flashes
3. press the ➕ or ➖ key to adjust the maximum speed value.
For other models of Burchda e-bike (such S2), please refer to this article: https://burchda-official.com/blogs/knowledge/how-to-limit-the-burchda-ebike-speed-to-25km-h
