Hi 9159-AR-DST Owner, Thank you for your question. To replace the RP71655AR spout, first turn off the water supplies to the faucet. Unscrew the wand from the hose assembly. On the back of the spout there is a small black button. Push in on the button and pull the spout off of the spout retainer. Thread the hose out through the spout to finish the spout removal. Thread the hose back through the new spout, use a pen or screw driver to guide the hose past the magnets at the end of the spout. Slide the new spout over the spout retainer, make sure to line up the button and hole. Screw the wand back on the hose, turn on your water supplies and the repair is complete. I have attached a link to the manual for the model 9159-AR-DST faucet below. The manual includes the parts breakdown which should help with your repair.