The outlet pipe or drain hose of a washing machine is responsible for removing the wastewater from the machine during the wash and rinse cycles. Over time, this hose can become clogged with lint, debris, or even small objects that accidentally made their way into the machine.Typically, the drain hose is located at the back of the washing machine. It is usually attached to a drain pipe, laundry sink, or standpipe. If necessary, you may need to move the washing machine slightly to access the hose..