A washing machine drain hose connects to the water pump inside the machine and to a drain pipe outside the machine; that is, if the outside end is not hung over a stationary tub. In some circumstances, one of the connections continually leak. Since a washing machine drain hose is made of plastic, addressing a leak is handled much the same way as PVC plumbing parts.
Apply PVC primer to any surfaces that will make contact. Ensure that the inside of the end of the hose is thoroughly coated if the hose is sliding over the part to which it connects. Coat the outside of drain hose if it is sliding into the connecting part. Coat the part to which the hose connects, either the port on the pump or the drain pipe.
Coat the primed surfaces with PVC cement. Ensure that a generous amount of cement is used on the surfaces. Let the cement set up for about five minutes before connecting the parts.
Install the end of the drain hose and hold it in place for a few minutes until the cement has a chance to start bonding the parts. Allow the cement to dry thoroughly for several hours before using the washing machine.