Page 15
VII.Daily maintenance and basic trouble shooting Check whether the end of the brake cable is stuck. Brake abnormal sound or Slight friction can be adjusted by fine-tuning the end of the line wheel rotation resistance Adjust the brakes to ensure that the brake pad and brake disc clearance is balanced If the brake pads are worn, replace brake pads.
Need help?
Do you have a question about the D21 and is the answer not in the manual?
Questions and answers