If you have to undertake adjustments on your Kawasaki GPz 400 then it is usually a good idea to have access to a Workshop Manual to use as a reference in the event you need to know tips to take off a particular component much like the Brake Pads and fit it again in the correct way.
Kawasaki GPz 400 Workshop Manuals gives you certain diagnostic details on your vehicle so if something is not working it will help you work out what the problem is and tips on how to make it better. You will be able to analyse if this can be achieved yourself or in the event the job is too big you can make a reservation for your GPz 400 into a nearby repair garage.
Kawasaki GPz 400 manual