If you wish to conduct maintenance tasks on your Linhai 50 PY then it is always a good plan to have access to a Workshop Manual to keep just for reference if you want to know ways to take off a specific part for instance the Exhaust and install it again safely.
Linhai 50 PY Workshop Manuals gives you specified diagnostic information for your automobile so if something is broken it can help you understand what the situation is and tips on how to repair it. After that you can decide if you can do this on your own or in the event the job is just too big it is possible to book your 50 PY into a local garage.
Linhai 50 PY manual