If you want to undertake maintenance tasks on your Honda Smart Dio Z4 then it is usually a good idea to have a Workshop Manual to keep just for a reference if perhaps you need to know methods to remove a particular part like the Brake Pads and fit it again in the correct manner.
Honda Smart Dio Z4 Workshop Manuals will give you specified diagnostic wisdom for the car therefore if something is playing up it will help you determine what the situation is and how to correct it. You can then assess if you can do this yourself or if ever the job is just too big it is possible to make a booking for your Smart Dio Z4 in to a local garage.
Honda Smart Dio Z4 manual