Rick R Corpus Christi , TX May 14, 2022 Appliance: Frigidaire Frigidaire/Gas Dryer FGR231AS3 Frigidaire Dryer Fgr231as3: Well first my mom has a dryer that is probably over 20years old. I think her set knob was broke. We replaced it with the part I ordered from you. it work prefect thank you. How to replace Timer Knob. Replace the knob and that was that. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes