If you want to conduct maintenance tasks for your Veli VL150 5 then it will always be recommended to own a Workshop Manual to keep just for personal reference if you need to know simple methods to strip off a specific component such as the Drive Shaft and fit it again accurately.
Veli VL150 5 Workshop Manuals can offer you certain diagnostic guidelines for your car therefore if something is faulty it will help you discover what the problem is and tips to repair it. After that you can evaluate if you can do this yourself or in case the job is just too big it is possible to book your VL150 5 into a local repair garage.
Veli VL150 5 manual