If you wish to perform auto repairs on your Ducati 851 SP 4 then it is always recommended to own a Workshop Manual to keep just for a reference should you want to know techniques to remove a specific part for example Wheel and install it again in the correct manner.
Ducati 851 SP 4 Workshop Manuals provide you with certain diagnostic guides for the vehicle therefore if something is playing up it helps you ascertain what the problem is and the best way to fix it. You will be able to analyse if this can be done yourself or if ever the job is too big it is possible to make a booking for your 851 SP 4 in with a trusted car garage.
Ducati 851 SP 4 manual