If you wish to do repairs to your Veli VL50QT 3 then it will always be a great idea to have a Workshop Manual to use as reference in case that you want to know easy methods to take out a certain component such as the Gearbox and fit it again in the correct way.
Veli VL50QT 3 Workshop Manuals will give you unique diagnostic guidelines on your vehicle so if something is broken it can help you determine what the situation is and methods to correct it. After that you can determine if this can be done yourself or if the job is just too big it is possible to book your VL50QT 3 in with a nearby garage.
Veli VL50QT 3 manual