If you wish to accomplish maintenance tasks on your own Puch 125 GS then it is always a good plan to own a Workshop Manual for reference if you need to know tips to remove a particular part for example Dashboard and fit it again accurately.
Puch 125 GS Workshop Manuals offers clear targeted diagnostic wisdom for the car so if something is not working it helps you determine what the problem is and tips to repair it. Then you are able to assess if you can do this yourself or that the job is just too big you could book your 125 GS in with a local car garage.
Puch 125 GS manual