If you need to execute auto repairs to your Piaggio Skipper ST 125 then it is usually a good idea to have a Workshop Manual to use as reference in case that you need to know the best way to take out a certain component like the Exhaust and match it again in the right way.
Piaggio Skipper ST 125 Workshop Manuals will give identifiable diagnostic details with regards to your car so if something is broken it will help you discover what the situation is and tips to repair it. You will be able to determine if this can be done by yourself or that the job is too big you can actually make a reservation for your Skipper ST 125 right into a decent repair garage.
Piaggio Skipper ST 125 manual