The Timer Knob Assembly is an OEM replacement part for Frigidaire electric dryers. This assembly incorporates the timer dial, stem, and mounting components that allow users to set desired drying periods. Causes of a faulty timer knob include wear and tear of internal gears from regular cycle selections. Damage to the outer dial or stem connection points may also occur. Symptoms include:  Inability to rotate timer dial through full drying options    Timer selections not initiating or maintaining set programs Dial detaching from the front panel during adjustment This OEM Frigidaire replacement restores convenient, reliable timer use for selecting standard and air fluff cycles. Compatible with Electrolux, Gibson, and various Kenmore dryer models as well.This part fixes the following symptomsTimer will not advancePart Number 134886700 (AP4356328) replaces 134886702, 131848601, 134035500, 134035502, 1464872, AH2330897, EA2330897, PS2330897.