If you have to undertake maintenance for your Ducati 900 SS Darmah then it is usually a good plan to have access to a Workshop Manual to use as personal reference just in case you want to know tips on how to take off a specific part like the Wheel Bearing and fit it again the right way.
Ducati 900 SS Darmah Workshop Manuals will give you certain diagnostic guidelines for the car or truck so if something is wrong it can help you identify what the situation is and how to fix it. After that you can assess if this can be done yourself or if the job is too big you can make a reservation for your 900 SS Darmah in to a nearby friendly mechanic.
Ducati 900 SS Darmah manual