Timothy N Rockledge , FL November 30, 2024 Appliance: Whirlpool Dishwasher WDF520PADB7 Whirlpool Dishwasher Wdf520padb7: Water will not drain completly. How to replace Drain Hose. New drain hose, the check valve was sticking preventing full drain Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes