If you wish to perform repairs on your Honda PS125i then it will always be a good idea to possess a Workshop Manual to use as reference in the event you want to know methods to strip off a certain part such as the Wheel Bearing and match it again appropriately.
Honda PS125i Workshop Manuals offer you certain diagnostic guidelines on your automobile therefore if something is not working it will help you understand what the issue is and how to correct it. You will be able to determine if this can be done by yourself or if the job is just too big you can actually book your PS125i in with a local repair garage.
Honda PS125i manual