If you choose to do fixes on your own MZ 125 SM Blizzard then it is usually a great idea to own a Workshop Manual for a reference in the event that you need to know tips to remove a particular component much like the Door and fit it again the right way.
MZ 125 SM Blizzard Workshop Manuals will give targeted diagnostic guides for the automobile so if something is broken it will help you identify what the situation is and some ways to make it better. Then you are able to evaluate if you can do this yourself or in the event the job is simply too big it is possible to make a booking for your 125 SM Blizzard right into a local mechanic.
MZ 125 SM Blizzard manual