If you need to accomplish fixes on your own Piaggio Fly 50 4T then it is usually a good plan to own a Workshop Manual to use as personal reference in the event you need to know methods to take out a particular part including Gearbox and install it again in the right way.
Piaggio Fly 50 4T Workshop Manuals provides particular diagnostic guidelines with regards to your automobile so if something is not working it can help you find out what the problem is and how you can resolve it. After that you can assess if this can be done by yourself or in the event the job is too big you can make a reservation for your Fly 50 4T right into a suitable repair garage.
Piaggio Fly 50 4T manual