A washing machine drain hose provides an escape for laundry waste water. Washing machines pump used water out through a receptacle in back. Laundry rooms genearlly have a drain pipe receiver, or stand pipe, extending up from the wall. Install a hose running from the washer to the stand pipe to move the water to the sewer.
Plan your attachment. Place the hooked drain hose against the back of the washing machine near the waste water receptacle. Place the other end of the hose next to the stand pipe. Be sure you can secure the drain hose at the receptacle, and set at least 2 inches of the other end into the stand pipe without bending or crimping the hose.
Attach the hose to the washer. Slip the ring clamp over the end of the hose you're attaching to the washing machine and slide it a few inches back. Fit the end of the hose around the receptacle and push it onto the connector as far as possible. Slide the ring clamp over the section of the hose that's around the receptacle. Tighten the clamp firmly with a slotted screwdriver.
Slip the other end of the hose into the stand pipe. Stuff at least 2 inches of the drain hose down into the pipe.
Run a test wash to check for proper drainage. Set the washer for a small load and let it cycle through without adding clothes or detergent. Make sure there are no leaks from the receptacle and no backups at the stand pipe.
If there is no stand pipe, set the drain hose into a utility sink for drainage.