http://fish.shimano.com/media/fishing/SAC/techdocs/en/Low_Profile/12CU200G7_v1_m56577569830796519.pdf
Pull the spool tension cap and friction spring to get to bearing part #4343. You should be able to get it off without removing the handle or star drag - just position the points of the star on either side of the cap. Then open the palm side plate, and gently pry off the bearing retainer clip part # 32 to get to the second spool bearing part #4343. I good tip to remove that retainer clip is to do inside a big ziploc bag. They have a tendency to go flying! Soak them in acetone in a small glass jar. Swirl them occasionally, and check for bits of junk in the acetone. Change out the acetone until no more junk floats in the acetone. Pull them, let them dry for ten minutes or so on some paper towel, then give them a ten minute bath in 70% rubbing alcohol. Pull them out, and let them dry again for ten minutes or so. Add one drop of Bantam Oil to the inner edge of the race, and gently spin the bearing on a pencil to distribute the oil. Let them sit on paper towel for another ten minutes to let any excess oil drain. Reinstall the bearings, putting the parts in reverse order that you removed them. Lastly, do not oil the brake drum. It may work great at first, but the oil will degrade in this application, and get a little sticky. I prefer the brake race simply be clean. Dip a cotton swab in rubbing alcohol, and gently clean the inside race. Do this every couple trips, and you'll have consistent brakes.
Good luck, and let us know if you run into any jams.