If you wish to perform repairs for your Beta RR 50 then it will always be a good idea to own a Workshop Manual to use as personal reference if you want to know methods to take off a certain component including Brake Pads and fit it again properly.
Beta RR 50 Workshop Manuals are able to offer exact diagnostic information for your vehicle therefore if something is faulty it can help you understand what the situation is and how you can fix it. You can then assess if you can do this by yourself or if the job is simply too big you are able to book your RR 50 in with a trusted garage.
Beta RR 50 manual