If you want to do maintenance on your Yamaha FJR 1300 AE then it is usually a great idea to have access to a Workshop Manual for personal reference if you need to know tips on how to take out a specific component such as the Brake Discs and install it again in the correct manner.
Yamaha FJR 1300 AE Workshop Manuals provide you with particular diagnostic info for your vehicle so if something is playing up it will help you ascertain what the issue is and tips on how to correct it. Then you are able to decide if this can be achieved by yourself or that the job is just too big you can actually book your FJR 1300 AE right into a suitable mechanic.
Yamaha FJR 1300 AE manual