If you have to accomplish maintenance tasks to your Suzuki FXR 150 then it is usually a good idea to have access to a Workshop Manual to use as personal reference in case that you need to know the best ways to strip off a certain part such as the Brake Discs and match it again accordingly.
Suzuki FXR 150 Workshop Manuals provide you with distinct diagnostic guides on your car so if something is not working it can help you identify what the problem is and ways to make it better. You can then evaluate if this can be done by yourself or if the job is just too big you can actually make a reservation for your FXR 150 into a suitable car garage.
Suzuki FXR 150 manual