Find out where the leak is coming from.  The most obvious and visible places to see leaks are at the hot and/or cold fill hoses, the drain hose, or from the lid/door of the washer.

• If the leaks are coming from a fill hose, make sure the hose is tightly secured to the washer on one end and to the faucet on the other.  Check to make sure the hoses are clean and not clogged.  If leaks persist, there may be a problem with the hose that requires replacement.
• If the leaks are coming from the drain hose, make sure the hose is tightly secured to the washer on one end and properly installed to the drain on the other end.  Check to make sure the hose is clean and not clogged.  If leaks persist, there may be a problem with the hose that requires replacement.
• If it’s a front-load washer, check the seal of the door to make sure it’s clean and has no tears.

Make sure the unit is level.  Make sure the customer is not overloading the machine or letting imbalanced loads run.  Make sure the right amount of detergent is being used (too much can cause overflow/leaks).

If all of the above items are fine and not the cause of the leaking, the problem is likely internal and the unit will need to go to service.