Why is my dishwasher spray arm not spinning?

A spray arm may not spin due to clogs in the spray holes, a worn-out bearing, or debris obstructing its rotation. Food particles or mineral deposits can block water flow, reducing the pressure needed for the arm to rotate. Check for obstructions and clean the spray arm holes.

Can I clean a clogged dishwasher spray arm?

Yes, you can often clean a clogged spray arm. Remove it from the dishwasher and use a small brush or toothpick to clear any debris from the spray holes. You can also soak it in a vinegar solution to help dissolve mineral deposits. Ensure all holes are clear before reattaching.

How often should a dishwasher spray arm be replaced?

A dishwasher spray arm typically does not require routine replacement unless it shows signs of damage, such as cracks, warping, or persistent clogging that cannot be cleaned. Replace it when it fails to distribute water effectively, leading to poor cleaning performance.

Whirlpool Dishwasher Spray Arm Replacement Guide

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What the W10837249 does

The dishwasher spray arm rotates to distribute pressurized water throughout the dishwasher tub, cleaning dishes effectively during wash cycles.

Symptoms when this part fails

Dishes not getting clean
Spray arm not spinning
Unusual noises during wash cycle
Water not reaching upper rack
Visible cracks or damage on spray arm

Compatibility

Fits the Whirlpool family. Specifically:

Any unit originally equipped with OEM part number(s): W10629546, AP5988717, W10838302.
Check the model/rating plate inside your appliance and compare it against the fitment table on the product listing before ordering — this guide does not list specific compatible models because Amazon does not provide verified fitment data through this pipeline.

Also replaces: W10629546, AP5988717, W10838302

Tools you'll need

Screwdriver (Phillips or flathead)
Pliers (optional)
Towel

Difficulty: Easy · Time: 15-30 minutes

How to install the W10837249, step by step

Disconnect power to the dishwasher at the circuit breaker.
Open the dishwasher door and pull out the lower dish rack.
Locate the lower spray arm and unscrew or unclip it from its mount.
Carefully remove the old spray arm.
Position the new spray arm onto the mounting post.
Secure the new spray arm by screwing or clipping it into place.
Replace the lower dish rack and restore power to the dishwasher.
Run a test cycle to ensure proper function.

Related troubleshooting

If swapping this part doesn't fix the issue, check these next: