If you need to accomplish fixes on your CH Racing WSM 50 then it is always a good plan to have access to a Workshop Manual to keep just for personal reference if you want to know simple methods to remove a certain component like the Brake Discs and install it again in the right way.
CH Racing WSM 50 Workshop Manuals can offer you certain diagnostic wisdom for your vehicle therefore if something is playing up it will help you figure out what the issue is and tips to resolve it. Then you are able to determine if this can be done on your own or that the job is too big you could make a reservation for your WSM 50 in to a local mechanic.
CH Racing WSM 50 manual