If you need to accomplish maintenance to your Jawa 650 Style then it is always recommended to have access to a Workshop Manual to use as a reference if you need to know the right way to take out a specific component for example the Wheel and match it again successfully.
Jawa 650 Style Workshop Manuals gives you specific diagnostic facts for the vehicle so if something is not working it will help you identify what the situation is and tips on how to correct it. You will be able to evaluate if this can be achieved by yourself or if ever the job is simply too big you could book your 650 Style right into a nearby garage.
Jawa 650 Style manual