If you wish to accomplish fixes on your own Sachs Oliver Electro then it will always be a good idea to own a Workshop Manual to keep just for personal reference just in case you want to know how you can remove a particular part including Brake Discs and match it again successfully.
Sachs Oliver Electro Workshop Manuals provides special diagnostic guidelines on your vehicle so if something is broken it can help you determine what the issue is and the way to correct it. You can then decide if you can do this on your own or if ever the job is simply too big you can actually make a booking for your Oliver Electro into a trusted car garage.
Sachs Oliver Electro manual