If you want to do maintenance tasks on your own Adly Thunder 50 then it is usually a good idea to own a Workshop Manual for a reference just in case you want to know proven methods to strip off a particular part for example the Wheel Bearing and match it again adequately.
Adly Thunder 50 Workshop Manuals will provide you with specified diagnostic information on your car so if something is broken it can help you discover what the situation is and tips to correct it. You can then analyse if you can do this on your own or in the event the job is just too big you can still make a reservation for your Thunder 50 in to a local mechanic.
Adly Thunder 50 manual