Changing the water/ice filter in a refrigerator is much like changing a lightbulb, with just a few extra steps.
5 Pay careful attention when replacing the filter housing, so as not to cross-thread when screwing back in. This will cause leaks and possible damage the threads on the filter housing.
Twist and remove the housing of the filter. The housing will have small arrows showing which way to turn, but it's normally to the left.
Return the housing to the refrigerator, and twist back in place.