Product review (5 stars): Who Would Have Thought This Was For Sale?
We have had our washer for several years, and my wife is very pleased with it.  One day I noticed her cranking the water level control with a pair of pliers so I committed to investigating what to do.  First, I took the control panel apart to see what exactly this control was, and found that it has some sort of air pressure switch arrangement with several pressure settings mechanically set with a sort of star-shaped cam that pushes a piston.  All this made of plastic, with the poor mechanical advantage, made it clear that this particular design is doomed to failure somewhere down the line.  I came up with a workaround by removing the side panel and instructing my wife to push the piston in while turning the shaft to the desired position.  This didn't go over well, so I bit the bullet and ordered this.  I am very pleased with the switch, and so is my wife.  The action is smooth enough, and replacing it was reasonably easy.  If your water level switch starts being cranky I highly recommend that you quick go out and get this, before you bust the knob.  Five stars because it is just the thing, and sure beats buying a new washer.