If you want to undertake maintenance to your Yamaha WF 450 F then it will always be a good idea to have a Workshop Manual for personal reference in case you need to know simple methods to take off a certain part including Brake Pads and install it again properly.
Yamaha WF 450 F Workshop Manuals offer you targeted diagnostic details for the vehicle therefore if something is wrong it helps you find out what the issue is and methods to fix it. Then you are able to analyse if this can be done on your own or that the job is just too big you can actually book your WF 450 F into a decent car garage.
Yamaha WF 450 F manual