If you choose to do fixes on your Derbi Cross City 125 then it is always a good plan to have a Workshop Manual to keep just for a guide in the event you need to know the way to take off a certain component including Brake Discs and install it again effectively.
Derbi Cross City 125 Workshop Manuals offer you detailed diagnostic guidelines for the automobile so if something is broken it will help you ascertain what the problem is and tips to fix it. You can then analyse if this can be achieved yourself or if the job is simply too big you are able to book your Cross City 125 into a decent mechanic.
Derbi Cross City 125 manual