If you choose to do adjustments to your Rieju Pacific 50 then it is usually recommended to have access to a Workshop Manual to use as personal reference if you need to know the way to take out a certain component including Brake Pads and install it again in the correct way.
Rieju Pacific 50 Workshop Manuals provides precise diagnostic info for the vehicle so if something is faulty it can help you discover what the problem is and how to repair it. You can then evaluate if you can do this by yourself or in the event the job is just too big you can actually make a reservation for your Pacific 50 right into a suitable repair garage.
Rieju Pacific 50 manual