Bill W Keizer , OR October 23, 2016 Appliance: Whirlpool Washer WFW9450WW00 Whirlpool Washer Wfw9450ww00: Water pump. How to replace Washer Water Pump. Looked on you tube then ordered the part. It too about 20 minutes and washer works like a new one. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes