Stephen T Centennial , CO March 07, 2022 Appliance: Roper Electric Dryer RED4340SQ1 Roper Dryer Red4340sq1: The dryer wouldn't start. How to replace Timer. I ordered a new timer from APP. It came in 2 days (expedited shipping). Exact fit and works great! Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes