Washing machine drain pump motor assembly. If the washer does not drain the drain pump may be clogged. If no clog is found the motor's impeller could be damaged or the motor itself could be defective.
Washing machine drain pump assembly. Check coin trap for obstructions that can plug or damage the washer pump.
Door boot gasket (or boot seal). If the washer is leaking, the door boot may have a tear in it. Overloading the washer is the most common cause for a torn door boot.