If you choose to conduct fixes on your Gilera 150 Strada then it is always a great idea to possess a Workshop Manual to use as reference if perhaps you need to know simple methods to take off a specific component much like the Drive Shaft and match it again perfectly.
Gilera 150 Strada Workshop Manuals are able to offer specified diagnostic facts with regards to your automobile therefore if something is faulty it will help you determine what the problem is and ways to fix it. You can then analyse if this can be done yourself or if the job is just too big you can actually make a reservation for your 150 Strada in with a suitable friendly mechanic.
Gilera 150 Strada manual