If you wish to undertake adjustments to your Kawasaki Z 650 then it will always be a good plan to have a Workshop Manual for a guide just in case you need to know the best ways to take out a certain component much like the Drive Shaft and match it again in the correct manner.
Kawasaki Z 650 Workshop Manuals will provide you with detailed diagnostic guidelines for the car or truck therefore if something is playing up it can help you work out what the problem is and how to correct it. You will be able to assess if this can be done on your own or in the event the job is simply too big you could make a booking for your Z 650 in with a trusted garage.
Kawasaki Z 650 manual