Adam L Fontana , CA October 30, 2020 Appliance: Samsung Washer WF520ABP/XAA-00 Samsung Washer Wf520abp/Xaa-00: Drain pump not working. How to replace Washer Drain Pump. After watching some troubleshooting videos by appliance parts pros and others I was able to determine the drain pump was bad. Watched some videos on replacing the part. Once the parts I ordered came, it took me no time at all to replace. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes