If you want to accomplish repairs on your own Honda CRM 125 R then it is usually recommended to have access to a Workshop Manual to use as personal reference should you need to know the way to take off a particular part much like the Brake Discs and fit it again accordingly.
Honda CRM 125 R Workshop Manuals can provide identifiable diagnostic wisdom with regards to your automobile therefore if something is wrong it helps you determine what the issue is and how to make it better. Then you are able to determine if this can be achieved yourself or that the job is simply too big you can still make a booking for your CRM 125 R in with a suitable mechanic.
Honda CRM 125 R manual