If you need to conduct auto repairs on your Piaggio XEvo 400 then it will always be recommended to own a Workshop Manual to use as reference in the event you need to know methods to take out a particular component such as the Drive Shaft and match it again accordingly.
Piaggio XEvo 400 Workshop Manuals provide you with unique diagnostic info for the automobile therefore if something is playing up it can help you discover what the situation is and how you can fix it. You will be able to evaluate if this can be done yourself or that the job is just too big you could make a booking for your XEvo 400 into a trusted mechanic.
Piaggio XEvo 400 manual