If you wish to do repairs on your Moto Guzzi Bellagio then it is usually a good plan to have access to a Workshop Manual to keep just for a guide in case you want to know how you can strip off a certain part including Brake Discs and fit it again effectively.
Moto Guzzi Bellagio Workshop Manuals will give specified diagnostic information with regards to your vehicle so if something is broken it can help you figure out what the issue is and tips on how to repair it. You can then decide if you can do this yourself or that the job is too big you are able to make a reservation for your Bellagio in with a nearby mechanic.
Moto Guzzi Bellagio manual