If you want to perform adjustments on your own Veli VL110 12 then it is always a good plan to possess a Workshop Manual to keep just for personal reference in case you want to know how to take off a specific part including Wheel and fit it again safely.
Veli VL110 12 Workshop Manuals offers you exact diagnostic info for your car or truck therefore if something is not working it can help you work out what the problem is and tips on how to repair it. Then you are able to assess if this can be done yourself or that the job is too big you could make a reservation for your VL110 12 in to a decent mechanic.
Veli VL110 12 manual