If you choose to conduct auto repairs on your Suzuki FXR 150 then it is usually a great idea to own a Workshop Manual to keep just for a reference if you want to know tips on how to strip off a certain component for example, the Door and fit it again in the correct way.
Suzuki FXR 150 Workshop Manuals can offer you special diagnostic guides for the vehicle so if something is not working it will help you identify what the problem is and how to correct it. You will be able to assess if this can be achieved yourself or if the job is just too big you could make a booking for your FXR 150 in with a local repair garage.
Suzuki FXR 150 manual