If you have to perform fixes for your MV Agusta F4 S then it will always be recommended to own a Workshop Manual for a guide just in case you want to know tips on how to strip off a certain part for example the Door and fit it again accurately.
MV Agusta F4 S Workshop Manuals gives you certain diagnostic guidelines on your vehicle so if something is wrong it helps you identify what the problem is and the way to repair it. Then you are able to analyse if this can be achieved yourself or that the job is simply too big you can actually make a booking for your F4 S right into a trusted friendly mechanic.
MV Agusta F4 S manual