http://www.daewootech.com/forum/viewtopic.php?t=2678
CAUTION: The fuel system is under pressure. To avoid fuel spillage and the risk of personal injury or fire, it is necessary to relieve the fuel system pressure before disconnecting the fuel lines.
2. Disconnectt the negative cable on the battery.
3. Remove the inlet/outlet fuel lines by first pressing the connector lock inward...
and then pull the hose off of the tube.
4.Pull the filter off of the retaining clamp.
5. Be sure to note the flow direction. the direction is marked with an arrow on the filter's body that says "flow", make sure it points towards the fuel line going tot he fuel rail.
6. Place the new fuel filter in the clamp
7. Connect the inlet/outlet lines. Secure the lines with the connector lock.
8. Reconnect the negative battery cable.
9. Turn the ignition on (don't start the engine yet) so the fuel pump builds up pressure then check for leaks.
MMamdouh