If you want to carry out maintenance tasks on your own Veli VL110 20 then it is always a good plan to have a Workshop Manual to keep just for a reference in the event you want to know methods to strip off a certain part for example, the Brake Discs and fit it again accordingly.
Veli VL110 20 Workshop Manuals will give you specified diagnostic guidelines for your car so if something is not working it can help you figure out what the problem is and how to correct it. Then you are able to analyse if you can do this by yourself or if the job is too big you can still make a booking for your VL110 20 into a nearby repair garage.
Veli VL110 20 manual