If you wish to carry out maintenance tasks to your Veli VL125T 8 then it is usually recommended to possess a Workshop Manual to use as a reference just in case you want to know techniques to take off a certain component such as the Door and fit it again effectively.
Veli VL125T 8 Workshop Manuals provide you with detailed diagnostic information for your automobile therefore if something is playing up it will help you identify what the issue is and methods to fix it. You can then assess if this can be achieved yourself or if ever the job is simply too big you could book your VL125T 8 in to a decent garage.
Veli VL125T 8 manual