Subaru 2004 Baja Owner's Manual page 357

Maintenance and service
1) Sealing washer
2) Drain plug
5. Wipe the seating surface of the drain plug with a
clean cloth and tighten it securely with a new sealing
washer after the oil has completely drained out.
11-12
6. Remove three clips at the front of the cover under
the oil filter.