If you choose to perform maintenance tasks on your MZ Sportstar 125 then it is always a good idea to own a Workshop Manual for a reference in case you want to know the right way to take out a particular part for example Brake Discs and match it again efficiently.
MZ Sportstar 125 Workshop Manuals offer you specified diagnostic wisdom with regards to your vehicle so if something is faulty it can help you understand what the problem is and how to make it better. You can then determine if this can be done yourself or in the event the job is just too big you could make a booking for your Sportstar 125 in to a decent repair garage.
MZ Sportstar 125 manual