The front legs were slightly worn and the rubber coverings were missing from the rear feet. This allowed the washer to slide easily on the tile floor. I replaced all four feet. This only required a 12 mm open end wrench. After leveling the washer, things were improved, but I also took the opportunity to replace the four shock absorbers under the drum. The shock absorbers were 5+ years old and one was showing signs of wear / damage. This required removing the front and rear panels with a Phillips screwdriver. The shock absorbers required a 13 mm docket and 8” extension for the socket. Very easy repair overall.