If you need to undertake fixes on your Jawa 640 Black Style then it is always a good idea to have a Workshop Manual to keep just for a reference just in case you want to know proven methods to take off a particular part including Drive Shaft and fit it again efficiently.
Jawa 640 Black Style Workshop Manuals offer you distinct diagnostic guides for the car or truck therefore if something is wrong it can help you work out what the problem is and the way to resolve it. After that you can determine if this can be done on your own or in case the job is too big you could book your 640 Black Style in with a decent garage.
Jawa 640 Black Style manual