If you want to undertake repairs on your Suzuki GSX 600 FS then it will always be a great idea to own a Workshop Manual to keep just for personal reference in case you need to know tips to strip off a specific part such as the Gearbox and match it again in the correct way.
Suzuki GSX 600 FS Workshop Manuals can offer you identifiable diagnostic guidelines for the car so if something is broken it will help you find out what the situation is and the way to repair it. After that you can determine if you can do this on your own or in the event the job is simply too big you can still make a booking for your GSX 600 FS in with a trusted garage.
Suzuki GSX 600 FS manual