folding electric tricycle motor speed slow Causes and Treatment

Reason 1: Adjust the folding electric tricycle handle and sensitive film, photographic tube kept dirt,
Treatment: Clean or wipe sensitive film with changing photographic tube.
Reason 2: the governor handle component localized damage,
Solution: Replace the governor handle.
Reason 3: low battery, charge less or not charge on electricity,
Treatment: Reference battery charge is not less than the power or electrical charge causes and solutions.
Reason 4: battery operated tricycle motor failure,
Solution: Replace the motor.
Reason 5: controller fails,
Solution: Replace the controller.