Find the knob on the other end of the reel from the handles. Rotate the knob around until it clicks. Then take hold of the lever and pull it away from the reel. Disconnect the reel's bale by disassembling the two screws that keep it in position. Find the dragging knob on the reel's tip. Loosen it by turning it.
Then, remove the spool component from the reel. Find the two screws on the front of the reel where the handle used to be. Disassemble them and peel off the side plate to see the reel's internal functioning.