Joseph C Willcox , AZ October 13, 2018 Appliance: Whirlpool Washer WFW9351YW00 Whirlpool Washer Wfw9351yw00: Wouldn't drain error codes e9 & f1. How to replace Washer Water Pump. Replaced pump and filter assembly. Took about 20 minutes start to finish. Machined is much quieter and works great once again. I did have to replace two hose clamps along the way, but I had them on hand, so no big deal. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes