If you have to execute auto repairs to your Veli ZQ 150 4 then it is usually a good idea to have a Workshop Manual to keep just for personal reference in case that you want to know simple methods to remove a particular component for instance the Gearbox and install it again adequately.
Veli ZQ 150 4 Workshop Manuals will give exact diagnostic details with regards to your car therefore if something is faulty it will help you figure out what the problem is and methods to correct it. You will be able to assess if this can be achieved by yourself or if ever the job is too big you can still make a booking for your ZQ 150 4 in to a trusted mechanic.
Veli ZQ 150 4 manual