If you need to undertake maintenance for your BMW R 1200 C then it will always be a good plan to own a Workshop Manual to use as a reference if perhaps you want to know how you can take out a particular part for example, the Door and fit it again successfully.
BMW R 1200 C Workshop Manuals will give particular diagnostic details with regards to your automobile so if something is faulty it can help you figure out what the situation is and how to resolve it. You can then assess if you can do this by yourself or in the event the job is too big you can make a reservation for your R 1200 C in with a trusted mechanic.
BMW R 1200 C manual