Larry R Oxnard , CA November 05, 2016 Appliance: Whirlpool Washer WTW6400SW3 Whirlpool Washer Wtw6400sw3: F71 error code and no spin cycle. How to replace Washplate (Low-Profile Impeller). Replaced basket hub assembly under agitator. Agitator would not come off so I had to cut slots in agitator with a dremel tool and use a faucet knob puller tool to pull it up off the shaft. As a result I had to replace the agitator as well. Once I got the agitator off replacing the basket hub was fairly straight forward. I also used the puller to remove the basket hub gear. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours