If you want to execute fixes on your Yamaha YBR250 then it is always a good plan to have a Workshop Manual to keep just for a guide in case you need to know tips to take off a specific part including Wheel Bearing and match it again accurately.
Yamaha YBR250 Workshop Manuals provides particular diagnostic details for your vehicle so if something is wrong it can help you work out what the situation is and the best way to repair it. You can then evaluate if this can be achieved yourself or if ever the job is just too big it is possible to make a booking for your YBR250 in to a suitable mechanic.
Yamaha YBR250 manual