If you need to carry out adjustments on your own Gilera Zulu 50 then it is always a great idea to have access to a Workshop Manual to keep just for a guide should you need to know easy methods to take out a certain part much like the Drive Shaft and fit it again successfully.
Gilera Zulu 50 Workshop Manuals gives you special diagnostic information with regards to your car so if something is wrong it can help you understand what the problem is and how to resolve it. You can then analyse if this can be achieved by yourself or if the job is just too big you could make a booking for your Zulu 50 in to a local mechanic.
Gilera Zulu 50 manual