If you want to conduct maintenance to your Honda SH125i then it is always a great idea to have a Workshop Manual to keep just for reference in case you want to know techniques to take out a particular component much like the Door and fit it again effectively.
Honda SH125i Workshop Manuals can provide specified diagnostic wisdom for the car so if something is playing up it helps you identify what the situation is and easy methods to resolve it. You will be able to determine if you can do this by yourself or that the job is too big you can actually make a reservation for your SH125i right into a trusted car garage.
Honda SH125i manual