Quick Answer: Spin the Drum by Hand First#
Most likely: the drive belt has snapped. On Whirlpool WED and WGD dryers the belt wraps the drum and routes through an idler pulley to the motor shaft, and when it breaks the idler arm drops, opens the belt switch, and cuts motor power — so a broken belt is the single most common no-turn cause at about 42% of cases. The fast test is to open the door and spin the drum by hand: if it turns freely with almost no resistance, the belt is gone; if it grinds or resists, look at the rollers and idler instead. That one check sorts a cheap belt from a bearing problem before you remove a single panel.
Likely Causes at a Glance#
| Cause | Likelihood | What to check |
|---|---|---|
| Broken drive belt | 42% | Drum spins freely by hand while the motor hums; belt part 341241 |
| Failed idler pulley | 22% | Motor hums, belt intact but immobile, sometimes a burning smell; idler W10837240 |
| Worn drum rollers | 15% | Grinding or resistance when you spin the drum by hand; roller kit WPW10314173 or W10314171 (set of 4) |
| Motor failure | 12% | No motor sound at all; a thermal overload can trip from vent restriction |
| Blocked blower wheel | 6% | Lint or a stray garment jamming the blower housing |
| Belt switch failure | 3% | Motor won't run even with an intact belt (safety interlock stuck open) |
Do You Have the Right Tools?
Gas leak detector ($130), thermal fuse tester ($95), belt tension gauge, and vent inspection camera ($180). Our technician arrives with $3,000+ in professional tools — your diagnostic is free.
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Walking Through the Diagnosis#
Unplug the dryer before opening it. Remove the top panel (a putty knife at the spring clips, or two Phillips screws at the rear), then the front panel (two screws top, two bottom, and disconnect the door switch). With the cabinet open, the broken belt is obvious — note the S-pattern routing before you pull the pieces, then loop the new belt (part 341241) around the drum with the ribbed side against the drum, down through the idler, and around the motor shaft. If the belt is intact but the drum would not turn and the motor only hums, the idler pulley (W10837240) has likely seized: a stuck idler bearing stops the belt cold and can scorch it, which is the source of that burning smell. Spin the drum with the belt removed — grinding or roughness means the drum support rollers are flat-spotting or seizing, so replace all four as a set (kit WPW10314173 or W10314171), because mixing old and new rollers causes vibration.
If the motor makes no sound at all, test it directly: with the belt off, apply power and confirm it spins; a motor whose thermal overload has tripped from a restricted vent will reset after roughly 20 to 30 minutes of cooling. Two smaller culprits round out the list — lint or a dryer sheet can jam the blower wheel (reachable from the front once the panel is off), and the belt switch, the safety interlock the idler arm holds closed, can fail open so the motor never runs even with a good belt. Whirlpool also shares these parts across Maytag, KitchenAid, and Amana dryers, so availability is excellent; if the drum spins freely and the motor is silent, verify 240V at the outlet and check the thermal fuse (part 279769), another common Whirlpool failure point.
Repair or Replace? The Short Version#
Every cause here is an inexpensive wear part, and since Whirlpool builds Maytag, KitchenAid, and Amana dryers too, the belt, idler, rollers, and switch are stocked everywhere — nothing on this list approaches the price of a new dryer. The smart move is to replace the belt, idler pulley, and all four rollers together when you have the cabinet open, because the labor is the same whether you change one wear part or all of them. If the motor itself has failed, get a repair quote before deciding — book an EasyBear technician.
Safety First — Know the Risks
Gas dryers carry carbon monoxide and explosion risk. Even electric dryers involve 240V circuits that can deliver a fatal shock. Our techs are licensed and insured — let them handle the risk.
Licensed & Insured · 90-Day Warranty · Same-Day Service
Frequently Asked Questions#
How long should a Whirlpool dryer belt last?#
Typically 8 to 12 years under normal use — Whirlpool's wider, thicker belt distributes tension more evenly and outlasts thinner designs. If yours snapped early, check for a seizing idler or roller that added drag, because a belt fighting a stuck bearing wears out fast.
Can I run my Whirlpool dryer with a broken belt?#
No. The belt switch is a safety interlock that cuts motor power the moment belt tension is lost, so the dryer will not run, and even if that switch were bypassed, running the motor without the drum load can damage it. Replace the belt rather than defeating the interlock.
The drum spins by hand but won't turn under power — what's wrong?#
If the drum rotates freely and the motor is silent, the problem is upstream of the belt: check the outlet for 240V, test the thermal fuse (part 279769, a common Whirlpool failure), and confirm the door switch and belt switch are closing. A freely spinning drum with a humming motor, by contrast, points back to a broken belt or a seized idler.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
