If you choose to conduct adjustments on your own MZ Mastiff then it is usually recommended to possess a Workshop Manual to use as a reference just in case you want to know how you can remove a certain component for example, the Door and install it again adequately.
MZ Mastiff Workshop Manuals are able to offer particular diagnostic facts for the vehicle so if something is broken it will help you determine what the problem is and tips on how to repair it. You will be able to decide if you can do this on your own or that the job is just too big you can still make a booking for your Mastiff in to a local friendly mechanic.
MZ Mastiff manual