Roper Dryer Timer Knob Broken Off — What Part Fixes This Problem?
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Understanding the Problem
If the timer knob on your Roper dryer has broken off, you may still be able to run the dryer by turning the exposed timer shaft with pliers, but that’s only a temporary workaround and can further damage the shaft or the timer switch. Knobs are usually plastic and press onto a splined metal timer shaft; over time the plastic can crack, the splines can strip, or the shaft retainer can fail, leaving the control unusable. Fixing the issue can be as simple as replacing the knob if the metal shaft and timer are undamaged. However, if the timer shaft is stripped, bent, corroded, or the internal timer switch is failing (timer won’t advance or the dryer won’t start), you’ll need the timer assembly (mechanical rotary timer or electronic timer module) replaced. Always disconnect power before inspecting or replacing parts and confirm the exact model number on the dryer (usually on the door frame or rear panel) to order the correct replacement parts.
Common Symptoms
Knob snapped or missing, knob spins freely or won’t attach, timer won’t advance, dryer won’t start or stops mid-cycle, visible damage or wobble at the timer shaft.
Common Causes
- Plastic knob aged, cracked, or fatigued and snapped off under normal use
- Excessive force used when turning a stuck timer (frozen drum or load) causing knob breakage
- Stripped/bent/corroded timer shaft or failed internal timer requiring the timer assembly replacement
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
Unplug the dryer, remove the control console or knob cover, and inspect the metal shaft: if the shaft splines are intact you only need a replacement press-on knob that matches the spline pattern; if the splines are rounded or the shaft wobbles, replace the timer assembly.
Frequently Asked Questions
Can I glue the broken knob back on as a temporary fix?
You can temporarily reattach a broken plastic knob with strong adhesive in a pinch, but it’s not recommended. Glue can fail under torque, leave residue, interfere with spline engagement, or make later replacement harder. A proper replacement knob that matches the spline pattern is inexpensive and more reliable.
Is this an easy DIY repair and how much should parts cost?
Yes — if only the knob is broken, it’s very easy: unplug the dryer, pull the old knob off (or remove any broken pieces), and press the new knob onto the shaft. A replacement knob typically costs $5–$20. If the timer assembly must be replaced, the job is still DIY-friendly for someone comfortable removing the control panel and disconnecting wiring; timers commonly range from $30–$120 depending on model. Always confirm compatibility with your dryer model number and disconnect power before starting work.
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