If you choose to execute auto repairs on your Honda CM 125 C then it is usually recommended to have access to a Workshop Manual for reference in case you need to know the best way to remove a specific part for example, the Brake Discs and match it again in the right way.
Honda CM 125 C Workshop Manuals will give you detailed diagnostic wisdom for the automobile therefore if something is wrong it will help you understand what the situation is and how you can make it better. Then you are able to determine if you can do this on your own or that the job is simply too big you could make a reservation for your CM 125 C in with a suitable car garage.
Honda CM 125 C manual