If you want to execute adjustments on your own Veli VL90 6 then it is usually a good idea to have a Workshop Manual to use as a guide in case you want to know tips to take out a specific part such as the Exhaust and fit it again accurately.
Veli VL90 6 Workshop Manuals will provide you with targeted diagnostic guidelines for the automobile so if something is wrong it will help you work out what the situation is and the best way to make it better. You can then analyse if this can be done on your own or in case the job is just too big it is possible to make a booking for your VL90 6 right into a suitable car garage.
Veli VL90 6 manual