Scott D South Kingstown , RI May 11, 2021 Appliance: Whirlpool Washer - Direct Drive GHW9100LW1 Whirlpool Washer Ghw9100lw1: The start switch knob had broken off. How to replace Rotary Start Switch. Being an older part, the shaft that held the knob was a single plastic piece, so we had to replace the entire switch. AppliancePartsPros.com made it very easy and economical. It took longer to put it back together than to repair. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes