If you want to accomplish adjustments on your Suzuki DR Z 400 SM then it is usually a great idea to have access to a Workshop Manual for reference if you need to know how to strip off a specific part like the Door and match it again in the right way.
Suzuki DR Z 400 SM Workshop Manuals gives you detailed diagnostic guides for the car therefore if something is playing up it will help you work out what the issue is and methods to correct it. You will be able to analyse if you can do this by yourself or in the event the job is simply too big you can still make a booking for your DR Z 400 SM in to a decent friendly mechanic.
Suzuki DR Z 400 SM manual