Acer ES 5 Serie Manual Del Usuario página 9

The brake is not working
Arrangement method:
1. The brake cable is too long, re-tighten the brake cable.
2. If the brake pad is damaged, replace the original one.
Note: When malfunction is detected, please contact an authorized
service center. Do not repair or modify scooter by yourself, this can cause
guarantee limitations and injuries.
VII. RIDE AND SAFETY
A learning process is necessary for the use of this device. A use of it
without a correct learning process can cause injuries. Use protections
to prevent damage. Once you complete these steps you can turn on the
electric scooter:
BRAKE ADJUSTMENT
Before every ride check brakes. If you feel the brake is too tight, use
the hex wrench counterclockwise to loosen the screws on the pressure
plate on the disc brake seat, release the brake line to shorten slightly the
exposed length and tighten the screws of the pressure plate. If you feel
that the brake is too loose, release the screws on the pressure plate, drag
the brake cable to slightly lengthen the length and then lock the screws on
the pressure plate.
EN-7