If you have to carry out auto repairs to your Moto Morini 9 12 then it is always recommended to have a Workshop Manual to keep just for a reference in the event that you want to know how you can take off a particular component like the Drive Shaft and install it again adequately.
Moto Morini 9 12 Workshop Manuals will provide you with exact diagnostic guides for the car so if something is faulty it can help you understand what the issue is and the way to make it better. You will be able to evaluate if you can do this by yourself or if ever the job is just too big you can still make a reservation for your 9 12 in to a suitable mechanic.
Moto Morini 9 12 manual