If you wish to do maintenance on your own Beta REV 4 T 250 then it is usually recommended to have access to a Workshop Manual to use as a reference in the event you want to know techniques to strip off a particular component including Brake Discs and install it again successfully.
Beta REV 4 T 250 Workshop Manuals will give you detailed diagnostic guides on your car or truck so if something is broken it helps you ascertain what the problem is and some ways to fix it. Then you are able to evaluate if this can be done by yourself or if the job is too big you can still book your REV 4 T 250 in with a nearby friendly mechanic.
Beta REV 4 T 250 manual