If you want to perform fixes on your own Motom Dolcevita 125 then it is usually recommended to own a Workshop Manual to use as personal reference if you want to know proven methods to remove a certain part like the Wheel Bearing and fit it again appropriately.
Motom Dolcevita 125 Workshop Manuals are able to offer unique diagnostic wisdom for the vehicle so if something is playing up it can help you figure out what the problem is and the way to resolve it. After that you can analyse if this can be done on your own or that the job is too big you can still make a booking for your Dolcevita 125 right into a decent car garage.
Motom Dolcevita 125 manual