Knob Broken Off Timer on Roper Dryer (RED) – What Part Fixes It?
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Understanding the Problem
If the control knob has snapped off the timer on your Roper dryer (model tag RED), you may be unable to change cycles or start the dryer. Often the visible plastic knob breaks while the underlying timer shaft, adapter, or the timer switch itself may also be damaged. Sometimes only the plastic knob or hub has failed and the timer remains functional; other times the shaft/adapter or the timer mechanism is worn and will need replacement. Before ordering parts, it's important to inspect the control area. Remove the front/top control panel per the model's service instructions and check whether the knob broke at the plastic hub (an easy knob replacement) or whether the metal timer shaft or internal cam is rounded, bent, or has sheared the splines. Replacing the knob alone is a low-cost fix when the timer mechanism is still intact; if the timer shaft or switch is damaged you will typically replace the entire timer assembly or the knob/adapter kit.
Common Symptoms
Missing or broken control knob; inability to select cycles; timer won't advance or slips; dryer won't start when knob pushed/turned.
Common Causes
- Plastic knob hub or adapter snapped from normal use or impact
- Worn or rounded timer shaft splines causing knob to slip
- Internal timer/timer switch failure causing knob to feel loose or not advance
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at PartsDiscount.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
Pull the control panel forward and turn the exposed timer shaft by hand — if it rotates smoothly and clicks through positions, you likely only need a replacement knob/adapter; if it slips or doesn't click, replace the timer assembly.
Frequently Asked Questions
Can I replace the knob myself?
Yes — replacing a stripped or broken plastic knob is usually a simple DIY job: unplug the dryer, remove the control panel or pull the panel forward to access the knob, pull off the old broken pieces, and press on the replacement. If the knob includes an adapter, align it with the timer shaft splines. If the timer shaft or mechanism is damaged, you'll need to replace the full timer assembly and follow model-specific disassembly instructions.
How do I find the correct part for my Roper dryer?
Locate the model and serial tag on your dryer (commonly inside the door opening, on the door frame, or on the back panel). Use that exact model number in an OEM parts lookup or give it to a parts supplier. Because Roper models share parts with Whirlpool/Maytag families, a parts lookup keyed to your exact model ensures you buy the correct knob or timer assembly.
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