Fix a dryer that will not tumble

Steps

Goal: Confirm the symptom, rule out power, then isolate the tumbling fault.

• Run a timed dry cycle. Feel the exhaust vent or lint screen area after two minutes for warmth. Watch and listen for the drum turning.
• Symptom confirmed: The dryer heats but the drum does not turn—tumbling system has failed. Proceed to Check power and motor.
• No problem: The drum turns—different issue. Or the dryer does not heat—see Fix a dryer that will not heat.

Check power and motor

Goal: Rule out power loss and determine whether the motor runs.

• Verify the dryer is plugged in and the circuit breaker has not tripped. Electric dryers use 240 volts; both legs must be on. Reset the breaker if tripped.
• Start a timed dry cycle and listen at the rear of the dryer. If the motor runs (humming or spinning sound) but the drum does not turn, the fault is the belt, idler pulley, or rollers. If the motor does not run at all, the fault may be the motor, start switch, or thermal fuse.
• Good: Power is on. Motor runs—proceed to Belt and idler path. Motor does not run—proceed to Motor-fault path.
• Bad: Breaker keeps tripping—fix that first or call a pro.

Belt and idler path

Goal: Inspect and replace the drive belt or idler pulley when the motor runs but the drum does not turn.

• Unplug the dryer. Open the top or front panel per your model. Check your owner’s manual or search “[brand] [model] dryer belt replacement” for disassembly steps.
• Locate the drive belt around the drum and motor pulley. Inspect for breaks, cracks, or slippage off the pulleys. If broken or slipped, replace with an exact match.
• Check the idler pulley. It should spin freely. If seized, squeaks, or wobbles, replace it. Remove the belt, then the idler (usually one or two bolts). Install a matching replacement and reroute the belt.
• Good: You found and replaced the faulty belt or idler. Reassemble and test—the drum should tumble.
• Bad: Belt and idler are good but the drum still does not turn—proceed to Drum rollers.

Drum rollers path

Goal: Inspect and replace worn or seized drum rollers.

• With the belt removed, try turning the drum by hand. If it is stiff or grinds, the drum rollers may be bad.
• Inspect the rollers for flat spots, cracks, or seized bearings. Replace any that are worn or seized. Drum roller replacement can require drum removal on some models—if that exceeds your comfort level, call a technician.
• Good: You replaced the worn rollers. Reassemble and test—the drum should tumble.
• Bad: Rollers are good but the drum still does not turn—call a technician.

Motor-fault path

Goal: Check thermal fuse and start switch when the motor does not run.

• Unplug the dryer. Open the back or top panel. Locate the thermal fuse (small white or silver cylinder near the exhaust duct). Test for continuity with a multimeter. If blown, replace it.
• Test the start switch (door or push-to-start) for continuity when pressed. Replace if faulty.
• Good: You found and replaced the faulty thermal fuse or start switch. Reassemble and test—the motor should run and the drum should tumble.
• Bad: Both test good but the motor still does not run—motor may have failed. Call a technician.

When to get help

If you smell gas, evacuate immediately. Do not turn on lights or appliances. Call 911 or your gas utility from outside. Do not call a technician for an active gas leak—that is an emergency.

Call an appliance technician if:

• The motor does not run and you are not comfortable testing the thermal fuse or start switch.
• You have replaced the belt and idler and the drum still does not turn.
• Drum roller replacement requires drum removal and that exceeds your comfort level.
• You are not comfortable working with electricity or gas.

Verification

• The drum tumbles when you start a timed dry cycle.
• No squealing, grinding, or thumping during tumbling.
• The belt, idler pulley, or rollers (if replaced) are installed correctly and the dryer runs quietly.