This is not as easy as it looks. I suggest you borrow a neighbour's rotary clothes line, erect it and follow the way it has been done. There are all sorts of little twists and pitfalls that need to be done for the uninitiated to ensure the lines stay taut and it's very easy to get it wrong. . We admitted defeat and bought a replacement but if you Google Hills Hoist or the name of your own model, they may possibly have a restringing service. Alternatively do you have a local B & Q who have a restringing service?