If you have to execute adjustments on your Gilera XRT 600 then it is usually a great idea to have a Workshop Manual for reference if perhaps you need to know simple methods to remove a specific component including Clutch and fit it again correctly.
Gilera XRT 600 Workshop Manuals are able to offer certain diagnostic info for the vehicle so if something is faulty it can help you determine what the problem is and how you can repair it. You will be able to determine if you can do this by yourself or that the job is too big you can book your XRT 600 right into a trusted car garage.
Gilera XRT 600 manual