If you have to perform auto repairs on your own Dafier DFE 250 A then it is always recommended to have a Workshop Manual to keep just for a guide in case you need to know the way to take out a particular part such as the Exhaust and install it again properly.
Dafier DFE 250 A Workshop Manuals offers you special diagnostic guidelines on your vehicle so if something is not working it helps you discover what the problem is and easy methods to fix it. You can then evaluate if this can be done on your own or if ever the job is just too big you could make a booking for your DFE 250 A in to a decent friendly mechanic.
Dafier DFE 250 A manual