If you have to perform adjustments on your Piaggio Fly 125 then it will always be a good plan to possess a Workshop Manual to use as personal reference just in case you need to know the way to strip off a specific component for example Gearbox and fit it again accordingly.
Piaggio Fly 125 Workshop Manuals provides targeted diagnostic wisdom on your automobile so if something is broken it will help you determine what the issue is and the best way to repair it. You can then analyse if you can do this yourself or that the job is too big you can still make a reservation for your Fly 125 right into a local friendly mechanic.
Piaggio Fly 125 manual