How to knot the line to the Tie off button/washer:Unscrew the bottle from the reel and take any remaining line out of the bottle. To reinstall, take the end of the bowfishing line and begin at the mouth of the Retriever putting 8 inches through the reel body. Now straighten the line and send it through the mouth of the bottle and into the center hole found at the bottom. With the narrow end of the tie off button/washer facing the bottle, continue the line through the tie off button/washer and pull 5” of line past the button. Double back the line and using both pieces, tie an overhand knot as close to the button as possible. Grab the line at the top of the bottle and pull the knot, line and tie off button/washer back into the hole. Re-attach the bottle to the reel and tighten it completely. Then reel in the remaining line.