If you choose to perform adjustments for your Suzuki GSX 1200 then it is usually recommended to own a Workshop Manual to use as a reference should you need to know easy methods to strip off a specific component for example Dashboard and fit it again in the correct manner.
Suzuki GSX 1200 Workshop Manuals gives you detailed diagnostic guidelines for your car so if something is not working it helps you understand what the situation is and ways to fix it. Then you are able to assess if this can be achieved on your own or if the job is simply too big you can still book your GSX 1200 in to a nearby garage.
Suzuki GSX 1200 manual