If you choose to execute repairs on your own Honda XL 125 then it is usually recommended to own a Workshop Manual to keep just for a reference in the event you want to know proven methods to remove a particular part such as the Door and match it again appropriately.
Honda XL 125 Workshop Manuals gives you special diagnostic guides with regards to your vehicle therefore if something is not working it can help you discover what the issue is and the best way to correct it. Then you are able to evaluate if this can be achieved yourself or in the event the job is simply too big it is possible to book your XL 125 into a trusted garage.
Honda XL 125 manual