If you have to do adjustments for your Suzuki GT 550 J then it is always a great idea to have a Workshop Manual for a guide just in case you want to know the best ways to remove a certain component for example Exhaust and fit it again in the correct manner.
Suzuki GT 550 J Workshop Manuals will give exact diagnostic guides with regards to your vehicle therefore if something is not working it will help you determine what the issue is and how you can make it better. You will be able to decide if this can be done on your own or in the event the job is simply too big you could make a booking for your GT 550 J right into a decent car garage.
Suzuki GT 550 J manual