If you have to perform adjustments on your Vespa LX 125 then it will always be a great idea to have a Workshop Manual for reference in the event that you need to know tips to remove a specific component for instance the Brake Pads and match it again the right way.
Vespa LX 125 Workshop Manuals provide you with particular diagnostic guidelines on your car therefore if something is not working it will help you determine what the situation is and how you can repair it. Then you are able to determine if you can do this on your own or if the job is simply too big you can actually make a reservation for your LX 125 in to a nearby friendly mechanic.
Vespa LX 125 manual