If you wish to perform adjustments to your Honda SH300i then it will always be recommended to possess a Workshop Manual to keep just for personal reference if perhaps you want to know how you can remove a specific part for instance the Drive Shaft and match it again properly.
Honda SH300i Workshop Manuals will give you special diagnostic guides for your automobile therefore if something is not working it can help you understand what the problem is and how you can make it better. You will be able to determine if this can be done by yourself or in the event the job is too big it is possible to book your SH300i in to a local friendly mechanic.
Honda SH300i manual