If you choose to undertake fixes on your Veli ZQ 125 then it is always a great idea to own a Workshop Manual to use as reference just in case you want to know methods to strip off a particular part including Exhaust and fit it again perfectly.
Veli ZQ 125 Workshop Manuals are able to offer targeted diagnostic guides for the car so if something is broken it will help you figure out what the situation is and tips on how to make it better. Then you are able to analyse if this can be done by yourself or in the event the job is simply too big it is possible to book your ZQ 125 in to a suitable friendly mechanic.
Veli ZQ 125 manual