If you wish to do adjustments for your Ducati ST4S ABS then it is usually a good idea to own a Workshop Manual to keep just for a guide in the event that you want to know easy methods to strip off a specific component including Clutch and fit it again effectively.
Ducati ST4S ABS Workshop Manuals will give distinct diagnostic details for your automobile so if something is faulty it will help you determine what the situation is and how to resolve it. You can then analyse if this can be achieved by yourself or if the job is too big you are able to make a booking for your ST4S ABS in to a decent friendly mechanic.
Ducati ST4S ABS manual