If you wish to perform fixes on your own Suzuki KingQuad 400AS then it will always be a good idea to possess a Workshop Manual to use as a reference in case that you need to know tips to take out a certain component including Dashboard and match it again adequately.
Suzuki KingQuad 400AS Workshop Manuals offers clear special diagnostic info on your vehicle so if something is wrong it helps you identify what the situation is and how to correct it. After that you can determine if you can do this by yourself or if the job is simply too big it is possible to book your KingQuad 400AS right into a nearby mechanic.
Suzuki KingQuad 400AS manual