If you wish to carry out repairs to your Laverda 668 Diamante then it is always a good idea to possess a Workshop Manual for a guide if you need to know techniques to take out a certain component like the Drive Shaft and install it again adequately.
Laverda 668 Diamante Workshop Manuals provides identifiable diagnostic guides for your vehicle therefore if something is faulty it will help you identify what the issue is and tips on how to repair it. You can then determine if this can be done by yourself or that the job is just too big you could book your 668 Diamante in to a nearby mechanic.
Laverda 668 Diamante manual