If you have to accomplish maintenance tasks on your Moto Guzzi V7 850 GT then it will always be a great idea to own a Workshop Manual to keep just for a reference in the event you want to know the right way to remove a certain part including Drive Shaft and fit it again appropriately.
Moto Guzzi V7 850 GT Workshop Manuals offers clear certain diagnostic information for the automobile therefore if something is wrong it can help you find out what the issue is and ways to fix it. After that you can evaluate if this can be achieved on your own or in the event the job is just too big you can still book your V7 850 GT in with a local repair garage.
Moto Guzzi V7 850 GT manual