If you have to carry out adjustments on your Ducati 851 SP 3 then it is always a great idea to possess a Workshop Manual to use as a reference in case you need to know the best ways to remove a certain component much like the Exhaust and fit it again successfully.
Ducati 851 SP 3 Workshop Manuals will give you exact diagnostic info with regards to your car therefore if something is playing up it will help you find out what the issue is and methods to make it better. After that you can determine if this can be done on your own or that the job is just too big you can make a booking for your 851 SP 3 in to a local friendly mechanic.
Ducati 851 SP 3 manual