Before installing the pulley, make sure the shaft's inside threads are totally clean & free of burrs or grit that might cause the tool to bind. Chase them all the way to the bottom - if the install tool breaks and you have to drill it with a normal RH bit, it will spin to the bottom of the well.

If using a junkyard pump, this step is critical since this is a popular spot for mud-dauber wasps.

Owner caption August 2011 · Photo 3816 of 5000