1. Knot a figure 8 knot at the bottom of the mast.
2. Feed the main halyard line through the sail groove towards the main halyard swivel hook. Feed it through both eyelets of the hook and guide the line around the mast sheave.
3. Make sure the line goes through both eyelets of the main halyard swivel hook.
3. Knot the other end of the main halyard line with a figure 8 knot to the eyelet on the main halyard ring. Tie everything temporarily to the mast.