Symptoms
- Water fills but the drum doesn't move
- Cycle proceeds to spin without visible washing motion
- Agitator feels loose when moved by hand
- Problem may have started gradually
Likely causes
- CommonWorn agitator coupling or dogsThis part transmits motor motion to the agitator and is designed to wear out to protect the motor from overload.
- CommonBroken or slipped drive beltWithout a functioning belt, the motor can't transfer power to move the agitator or drum.
- PossibleTransmission or gearcase issueInternal transmission components can fail, especially on older machines.
- Less commonControl board or timer not sending the agitate signalAn electronic fault can skip the agitation step even though other functions work.
What to do
- Unplug the machine and check if the agitator has excessive play by hand, which points to a worn coupling.
- If accessible, inspect the drive belt (usually underneath or behind on top-loaders) for looseness or breakage.
- Note whether the drum still spins during the spin cycle even if agitation doesn't happen, which helps narrow the cause.
- Check that you haven't accidentally selected a rinse-only or spin-only cycle instead of a full wash.
- Replace the agitator coupling if it's confirmed worn, since this is a common and affordable fix.
- If the coupling and belt look fine but agitation still doesn't happen, a technician should check the transmission or control board.
Tools and parts
- Screwdriver
- Pliers
Washer agitator couplingSearch: “washing machine agitator coupling replacement”
Washing machine drive beltSearch: “washing machine drive belt”
When to call a pro
If the coupling and belt are fine but agitation still fails, have a technician check the transmission or control board.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.