If you wish to perform maintenance tasks for your Vespa LX50 then it is always a good idea to have access to a Workshop Manual to use as a reference in the event that you need to know easy methods to take off a certain part like the Exhaust and fit it again safely.
Vespa LX50 Workshop Manuals will provide you with special diagnostic guidelines on your car or truck therefore if something is faulty it helps you understand what the situation is and tips on how to fix it. You can then evaluate if this can be achieved by yourself or that the job is too big you could make a booking for your LX50 into a local garage.
Vespa LX50 manual