If you want to do auto repairs for your Veli VL150GY 2 then it is usually recommended to possess a Workshop Manual to use as reference in case you need to know simple methods to take out a specific component for example Gearbox and install it again adequately.
Veli VL150GY 2 Workshop Manuals gives you particular diagnostic guidelines for the automobile therefore if something is wrong it can help you determine what the situation is and methods to resolve it. You will be able to determine if you can do this on your own or that the job is too big you can make a booking for your VL150GY 2 into a local mechanic.
Veli VL150GY 2 manual