There are a few different ways to take apart a closed face reel, depending on the model and make of the reel. In general, however, you will need to remove the spool before you can access the rest of the reel. To do this, first unscrew the knob or release button at the top of the reel. This will loosen or release the spool from its housing. Once the spool is removed, you should be able to see all of the inner workings of the reel.
To completely disassemble the reel, you will need to remove each individual piece, including any screws or bolts holding them in place. Pay close attention to how everything fits together so that you can reassemble it correctly later on. Once everything is removed, cleaning and lubrication can be performed before putting it all back together again.