If you need to execute fixes on your own BMW F800ST then it will always be a good plan to have a Workshop Manual to use as personal reference should you need to know proven methods to strip off a particular part much like the Clutch and fit it again adequately.
BMW F800ST Workshop Manuals provides certain diagnostic guides on your car so if something is playing up it helps you identify what the problem is and the way to resolve it. After that you can analyse if this can be done by yourself or that the job is simply too big you can still make a booking for your F800ST in with a suitable garage.
BMW F800ST manual