Larry P Portland , OR December 27, 2014 Appliance: Whirlpool Washer WFW8300SW01 Whirlpool Washer Wfw8300sw01: Whirlpool duet washer would not drain. How to replace Water Pump. I ordered a new pump assy from AppliancePartsPros and received the part right away. The video online was right on and installation was a breeze! It fixed the problem and I was saved from having to pay a repair shop or worse yet buying a new washer! 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes