If you want to undertake adjustments to your Suzuki GS 750 L then it is always a great idea to own a Workshop Manual to keep just for reference just in case you need to know the best way to take out a particular part such as the Drive Shaft and install it again successfully.
Suzuki GS 750 L Workshop Manuals gives you unique diagnostic information on your car or truck so if something is playing up it will help you work out what the problem is and tips on how to resolve it. After that you can analyse if this can be achieved yourself or if the job is too big you can actually book your GS 750 L into a trusted garage.
Suzuki GS 750 L manual