How do you re thread a retractable clothes line?

To re-thread a retractable clothesline, first, remove the housing cover to access the spool. Unwind any existing line and then thread the new line through the guide holes on the housing. Pull the line taut and secure it by tying a knot or using the locking mechanism, then rewind it onto the spool. Finally, reattach the housing cover and test the line for proper function.