If you have to undertake maintenance tasks on your Puch 250 SGS then it is always recommended to own a Workshop Manual to use as a reference just in case you want to know how you can strip off a certain part such as the Dashboard and install it again accordingly.
Puch 250 SGS Workshop Manuals can offer you specific diagnostic guides for your car therefore if something is broken it will help you ascertain what the situation is and ways to resolve it. Then you are able to evaluate if this can be achieved on your own or if ever the job is too big you can still book your 250 SGS into a local garage.
Puch 250 SGS manual