I paid a plumber $150 to replace this part a year ago. I simply took the screws out,ordered the part,paid for 1 day shipping, and screwed the new part on. The washer DID NOT WORK without this part,and worked perfectly the minute I replaced it.
This repair was incredibly easy - I simply unscrewed the broken catch and installed the new one in its place, using the same screws. The entire process took about five minutes; the hardest part was finding a Phillips screwdriver in my house! Also, I commend Part Select for the prompt, courteous service. When I called, I was connected to an actual person - not a machine - who was very helpful, and the part arrived within 36 hours after the order, without any express mailing services.