If you choose to accomplish fixes to your Laverda Formula 650 then it is usually a good idea to have access to a Workshop Manual to use as a reference in case you need to know the way to take out a certain component including Clutch and install it again correctly.
Laverda Formula 650 Workshop Manuals provides specific diagnostic guidelines with regards to your vehicle so if something is playing up it can help you determine what the issue is and tips to fix it. You can then assess if this can be achieved yourself or if ever the job is too big you are able to make a booking for your Formula 650 in with a nearby garage.
Laverda Formula 650 manual