Uneven Flooring Surface

• A washing machine needs an absolutely level floor to operate effectively. Place your hands on top of the washer and try to move it from side to side. If the washer moves even slightly, the machine isn't stable. Without complete stability the washer is more likely to become off balance during the wash and spin cycles. The washing machine's user guide should indicate how to use the machine's leveling feet to level a washer on an uneven floor.
  
  

Loose Leveling Foot

• Ensure the washing machine's four leveling feet are secure. A loose leveling foot can cause a washing machine to fall out of balance. If one of the feet is loose, tighten it. Install rubber caps and locking nuts on the leveling feet if these components didn't come with the washer. Rubber caps and locking nuts will prevent a leveling foot from loosening again.
  
  

Poorly Loaded Washer

• A washing machine will repeatedly get stuck off balance if you don't load the washer correctly. Rather than loading clothes into the washtub haphazardly, spread the clothes evenly, taking into account the weight of the wet clothing. A wet towel will be heavier than a t-shirt, so these different types of fabrics need to be distributed with this in mind. If you hear the washing machine vibrating loudly and pounding against the flooring surface, or if you hear the wash bin pounding against the machine's casing, stop the machine and rearrange the clothes so they are evenly distributed.
  
  

Lingering Shipping Materials

• Make certain that all of the washing machine's packaging is removed from the washer when it's installed. For example, some GE washers have a special rod that holds the drum of the washer in place during shipping. If packaging materials are left underneath a washing machine, it can cause the washer to get stuck off balance each time you use it. Inspect the washer for packaging and remove any materials that may remain.