Washer Impeller vs Agitator: Troubleshooting Guide (Troubleshooting Guide)

On this page

Quick answer
Confirm the symptom
Tools and prep
Step-by-step troubleshooting
Common causes table
Parts matching
When to call a pro
FAQ
Related guides

Quick answer

First, identify whether your washer has an impeller or agitator. For impeller issues, check for debris or damage. For agitators, ensure it's not stuck or damaged. Always unplug the washer before starting any repairs.

Confirm the symptom

Washer not agitating clothes properly
Clothes coming out dirty or not clean
Unusual noises during the wash cycle
Washer not spinning or draining correctly
Water not being pumped out during spin cycle

Tools and prep

Screwdriver (Phillips and flathead)
Pliers
Socket wrench set
Replacement parts if needed
Towel to soak up any water
Ensure the washer is unplugged and water supply is turned off
Clear the area around the washer for easy access

Step-by-step troubleshooting

Identify Washer Type
Do: Check if your washer has an agitator (central post) or an impeller (low-profile disc).
Observe: Locate the central component in the washer tub.
Means: Determine the type of washer you have.
Next: Proceed to the relevant section based on your washer type.
Inspect Impeller (for impeller washers)
Do: Remove the impeller cover and check for debris or damage.
Observe: Look for any foreign objects or signs of wear.
Means: Identify if the impeller is the cause of the issue.
Next: Clean or replace the impeller if necessary.
Check Agitator (for agitator washers)
Do: Remove the agitator cap and check if the agitator is stuck or damaged.
Observe: Ensure the agitator moves freely and is not obstructed.
Means: Determine if the agitator is the problem.
Next: Lubricate or replace the agitator if needed.
Test the Washer
Do: Reassemble the washer and run a test cycle.
Observe: Monitor the washer for proper agitation and spinning.
Means: Verify that the issue is resolved.
Next: If the problem persists, consult the causes table.
Inspect Drive Belt (for both types)
Do: Check the drive belt for wear or damage.
Observe: Ensure the belt is intact and properly aligned.
Means: Identify if the drive belt is causing the issue.
Next: Replace the drive belt if necessary.
Check Motor Coupling
Do: Inspect the motor coupling for damage or wear.
Observe: Ensure the coupling is in good condition.
Means: Determine if the motor coupling is the problem.
Next: Replace the motor coupling if needed.
Test Again
Do: Run another test cycle after repairs.
Observe: Ensure the washer operates correctly.
Means: Confirm the issue is resolved.
Next: If the problem persists, consider professional help.

Common causes

Cause	Likelihood	Difficulty	Part often needed
Debris in Impeller Foreign objects can obstruct the impeller, preventing it from working properly.	Common	Easy	None (just cleaning)
Worn Impeller Over time, the impeller can wear out and become ineffective.	Sometimes	Easy–Medium	Impeller
Stuck Agitator The agitator can get stuck due to lack of lubrication or debris.	Common	Easy	Lubricant
Damaged Agitator The agitator can break or become damaged over time.	Sometimes	Medium	Agitator
Worn Drive Belt The drive belt can wear out and slip, causing the washer to malfunction.	Sometimes	Easy–Medium	Drive Belt
Faulty Motor Coupling The motor coupling can break, preventing the washer from agitating or spinning.	Rare	Medium	Motor Coupling
Electrical Issues Problems with the washer's electrical components can affect its operation.	Rare	Hard	Various (depending on the issue)

Parts matching

When replacing parts, ensure they match your washer's make and model. Check the manufacturer's specifications for compatibility.

Impeller: Ensure it fits your washer's tub and has the correct size and shape.
Agitator: Verify it matches your washer's model and has the right attachments.
Drive Belt: Check the belt's length and width to match your washer's specifications.
Motor Coupling: Ensure it fits your washer's motor and transmission.
Lubricant: Use a food-grade lubricant suitable for washing machines.

Always refer to your washer's manual for specific part numbers and compatibility information.

When to call a professional

If the washer is still not working after troubleshooting
If you encounter electrical issues beyond your comfort level
If the problem is related to the motor or transmission
If you are unsure about any step in the repair process
If the washer is under warranty
If you do not have the necessary tools or parts

FAQ

How do I know if my washer has an impeller or agitator?

Check the center of the washer tub. An agitator is a central post that moves back and forth, while an impeller is a low-profile disc that spins.

Can I use any lubricant for the agitator?

No, use a food-grade lubricant specifically designed for washing machines to avoid damaging the components.

What if the drive belt breaks while the washer is running?

Turn off and unplug the washer immediately. Replace the drive belt before using the washer again.

How often should I replace the impeller or agitator?

These parts typically last for several years, but if you notice wear or damage, replace them as needed.