If you want to perform maintenance tasks on your Veli VL150 19 then it will always be recommended to have a Workshop Manual to keep just for reference in the event you need to know simple methods to take out a specific part for example Brake Pads and fit it again perfectly.
Veli VL150 19 Workshop Manuals provides specific diagnostic facts with regards to your vehicle so if something is faulty it helps you identify what the issue is and the way to correct it. Then you are able to decide if this can be done by yourself or that the job is just too big you can make a reservation for your VL150 19 in with a nearby friendly mechanic.
Veli VL150 19 manual