Bruce D Cumberland , RI January 24, 2023 Appliance: Whirlpool Washer WFW9400SW01 Whirlpool washing machine leaking.: code f21/sud Replace all hoses, cleaned filter and all elbows/inlet ports The repair could have been much quicker had all ( squeeze ) hose clamps be facing toward the front of the machine. Suggest checking and cleaning all elbows and external drain hose for gunk before buying any replacement parts. Read More... Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours Tools: Adjustable Wrench, Pliers, Screwdrivers