Video by Lee Gavin via YouTube
Source
How to adjust the speed of Rooder mangosteen chopper electric scooters m1 and m1p.
1. turn light, and then power on by key.
2. gear 3, full speed.
3. flash(turn on/off quickly) 5 times front light.
4. speedometer shows 55555 on it.
5. turn left to set the speed down, turn right to set the speed up.
6. flash 5 times front light to save
7. power off, done.