Why does my dryer timer knob keep falling off?

A common reason is that the internal D-shaped insert or splines in the knob are worn out or broken, preventing it from gripping the timer shaft securely. The shaft itself might also be damaged, or a set screw, if present, could be loose or missing.

Can I use a universal timer knob for my dryer?

While some universal knobs exist, it's best to use a knob designed for your specific dryer model or brand. Knobs vary in shaft type (D-shaped, splined), diameter, and depth. An ill-fitting knob may not engage the timer correctly or could damage the timer shaft.

Do I need tools to replace a dryer timer knob?

Many dryer timer knobs simply pull straight off and push on, requiring no tools. However, some knobs are secured by a small set screw, which would require a screwdriver to loosen and tighten. Always check your specific knob design.

Frigidaire Dryer Timer Knob Replacement | Appliance Aid

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🏆 RECOMMENDED PART

HQLDMYGS 131873304 Timer Knob,2-1/2" Control Knob (White)

Compatible With: Dryer timer knob compatible with frigidaire dryer,2-1/2" Control Knob ( White )
Part Number: Replaces 131873304, AP2107773, 131873301, 131652401, 131167801, 131167804, 890128, AH418916, EA418916, PS418916
Fits Models: Manufacturer model number description FEX831CS0, FLSE72GCSA,FEX831FS0, FEZ831AS1 Lc, GLEH1642FS0, GLEH1642DS1, FGX831CS1, LEH1642DS0, FLXE52RBS7, FLXE52RBS8, GLEH1642DS0, FLSE60RGS1, FLSE72GCSB, FLXE52RBS...
Installation: Designed for simplicity, the control knob detaches by pulling it directly off its post. This makes both removal and reinstallation quick and effortless, reducing overall service time
Features: Compact and precisely engineered, the knob is designed to minimize issues such as damage, cracking, or slipping on the internal shaft

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What the 131873304 does

The timer knob allows users to select specific drying cycles and set the desired drying time. It connects to the timer shaft, enabling manual control of the dryer's operation.

Symptoms when this part fails

Knob spins freely without engaging timer
Knob is loose or wobbly
Knob is cracked or broken
Cannot select drying cycle
Dryer does not start when knob is turned

Compatibility

Fits the Frigidaire family. Specifically:

Any unit originally equipped with OEM part number(s): 131873304.
Check the model/rating plate inside your appliance and compare it against the fitment table on the product listing before ordering — this guide does not list specific compatible models because Amazon does not provide verified fitment data through this pipeline.

Tools you'll need

Screwdriver
Pliers
Pry tool
Work gloves

Difficulty: Easy · Time: 5-15 minutes

How to install the 131873304, step by step

Unplug the dryer from the power outlet.
Grasp the old timer knob firmly.
Pull the old knob straight off the timer shaft. If a set screw is present, loosen it first.
Align the new knob with the timer shaft.
Push the new knob onto the shaft until it is secure. If applicable, tighten the set screw.
Plug the dryer back into the power outlet.
Test the new knob by turning it to select a cycle.