If you wish to perform fixes on your own Suzuki DR Z 400 S then it will always be recommended to own a Workshop Manual to keep just for a guide in case that you want to know ways to strip off a specific component much like the Wheel and install it again successfully.
Suzuki DR Z 400 S Workshop Manuals offers you detailed diagnostic info for the automobile so if something is playing up it helps you determine what the problem is and the best way to correct it. Then you are able to analyse if you can do this yourself or if ever the job is just too big you could make a booking for your DR Z 400 S in to a suitable mechanic.
Suzuki DR Z 400 S manual