Replacing the ice maker was a very simple task, it took all of 15 minutes using just a 1/4 nut driver. Unplug and shut water off, loosen 2 screws, lift ice maker unit off screws, squeeze tabs on electrical wire harness and unplug, plug in new unit, make sure fill tube in place, hang on screws, snug screws, level and tighten and then turn on and wait for ice. (Be sure to double check that the fill tube is in correct location before tightening screws.)