If you choose to execute auto repairs on your Dafier DFE 125 IV then it is usually recommended to own a Workshop Manual for a guide in the event that you want to know how to take out a specific part such as the Brake Pads and match it again accordingly.
Dafier DFE 125 IV Workshop Manuals gives you specific diagnostic information on your car so if something is not working it can help you identify what the issue is and how you can repair it. You can then determine if this can be achieved on your own or that the job is simply too big you can actually book your DFE 125 IV into a nearby repair garage.
Dafier DFE 125 IV manual