If you have to accomplish repairs for your Kymco Top Boy 50 then it is always a great idea to own a Workshop Manual to use as reference in case you want to know the right way to strip off a certain component much like the Door and fit it again appropriately.
Kymco Top Boy 50 Workshop Manuals provide you with detailed diagnostic guides with regards to your vehicle therefore if something is not working it will help you work out what the issue is and how to make it better. You can then determine if this can be achieved by yourself or in case the job is just too big you can make a reservation for your Top Boy 50 into a nearby garage.
Kymco Top Boy 50 manual