If you have to do repairs for your Kawasaki Ninja ZX 10 R then it is always a good idea to own a Workshop Manual to keep just for a guide in the event that you need to know how you can take off a certain component such as the Door and fit it again safely.
Kawasaki Ninja ZX 10 R Workshop Manuals gives you exact diagnostic guides on your car so if something is faulty it will help you find out what the situation is and the way to fix it. Then you are able to assess if you can do this on your own or in case the job is simply too big you can actually make a reservation for your Ninja ZX 10 R into a nearby friendly mechanic.
Kawasaki Ninja ZX 10 R manual