If you want to conduct maintenance to your Italjet Grifon 900 then it will always be a good idea to have access to a Workshop Manual to use as personal reference in case you want to know the right way to take out a particular part much like the Clutch and fit it again in the correct manner.
Italjet Grifon 900 Workshop Manuals gives you targeted diagnostic guides on your automobile so if something is wrong it can help you determine what the issue is and the best way to correct it. You will be able to determine if this can be achieved by yourself or in the event the job is too big you can actually make a reservation for your Grifon 900 right into a trusted garage.
Italjet Grifon 900 manual