If you wish to execute fixes on your own Jincheng ST 125 Y Cross then it is always a good idea to have a Workshop Manual to keep just for personal reference in the event that you need to know the right way to remove a specific component like the Brake Discs and install it again effectively.
Jincheng ST 125 Y Cross Workshop Manuals are able to offer particular diagnostic details for your vehicle so if something is not working it can help you work out what the problem is and easy methods to correct it. Then you are able to evaluate if you can do this by yourself or if ever the job is simply too big you can still make a booking for your ST 125 Y Cross into a suitable friendly mechanic.
Jincheng ST 125 Y Cross manual