To adjust the number 9 e100 and Limbo e300 vehicles, you first need to ensure that the battery is fully charged. The speed regulator on the handle can then be used to adjust the speed, and the jumper on the motor controller can be used to adjust the speed and braking effect.
If the direction and balance need to be adjusted, the distance between the front and rear wheels can be manually adjusted to change the steering ability and stability of the vehicle. Finally, you need to constantly test drive the vehicle to test the adjustment effect to ensure that the vehicle runs safely and smoothly.