If you wish to conduct auto repairs for your BMW K 75 S then it will always be recommended to own a Workshop Manual to keep just for reference in case you want to know techniques to take out a particular part much like the Exhaust and fit it again the right way.
BMW K 75 S Workshop Manuals will give you exact diagnostic info on your car so if something is playing up it can help you find out what the situation is and the way to make it better. After that you can assess if you can do this by yourself or in the event the job is simply too big it is possible to book your K 75 S in with a suitable friendly mechanic.
BMW K 75 S manual