If you wish to perform adjustments for your Honda CB 125 disc then it is always a good idea to possess a Workshop Manual to keep just for reference just in case you want to know how you can take out a specific component like the Dashboard and match it again perfectly.
Honda CB 125 disc Workshop Manuals offer you particular diagnostic details for the vehicle so if something is broken it will help you figure out what the situation is and some ways to correct it. After that you can decide if this can be done yourself or in the event the job is just too big you could make a booking for your CB 125 disc in with a trusted car garage.
Honda CB 125 disc manual