How to Clean Dishwasher Spray Arms (Step-by-Step Guide for Better Cleaning)

Why dishwasher spray arms need cleaning

Spray arms are the rotating parts that shoot water onto your dishes. Over time, food particles, grease, and hard-water minerals clog the tiny holes. When this happens, you may notice:

• Dishes still dirty after a cycle

• White residue or film

• Weak water pressure inside

• Spray arms not spinning properly

Cleaning them regularly restores full washing power.

Step 1. Turn off the dishwasher and empty it

Before starting:

• Switch off the dishwasher

• Remove all dishes

• Pull out both racks for full access

This gives you space to safely remove the spray arms.

Step 2. Locate the spray arms

Most dishwashers have:

• One spray arm at the bottom

• One in the middle (under top rack)

• Sometimes a third at the top

Each one may remove slightly differently depending on the model.

Step 3. Remove the spray arms carefully

To remove:

• Some arms unscrew with a center cap

• Others pull straight up

• Some use a small locking clip

Turn gently. Do not force it. Plastic parts can crack.

Set the removed spray arms in the sink.

Step 4. Rinse the spray arms under warm water

• Hold each arm under warm running water

• Shake gently to remove loose debris

• Let water flow through the holes

This removes most surface dirt.

Step 5. Unclog the spray holes

Use:

• Toothpick

• Wooden skewer

• Soft toothbrush

Carefully clear each tiny hole.

⚠ Avoid metal pins or knives. They can widen or damage the holes and ruin water pressure.

If grease buildup is heavy, soak the arms in warm soapy water for 15 minutes.

Step 6. Flush the inside of the spray arms

Many people skip this step, but it matters.

• Fill the spray arm with warm water

• Shake it firmly

• Pour the water out

Repeat until no debris comes out.

This clears hidden particles trapped inside.

Step 7. Reinstall the spray arms

• Place each arm back in its original position

• Tighten caps or clips securely

• Spin them by hand

They should rotate freely without resistance.

If they scrape or stick, reinstall again.

Step 8. Run a short empty cycle

Run a quick hot cycle with no dishes to:

• Test spray rotation

• Flush loosened debris

• Confirm normal water pressure

Your dishwasher should now sound smoother and wash stronger.

How often should you clean spray arms?

• Heavy daily use → every 1–2 months

• Average use → every 3 months

• Hard-water areas → check monthly

If dishes suddenly start coming out dirty, check immediately.

Extra pro tips technicians recommend

✔ Always clean the filter first, then spray arms
✔ Use rinse aid in hard-water regions
✔ Never block spray arms with tall pans
✔ Run a vinegar cleaning cycle once a month

These habits keep spray arms clog-free much longer.

Cleaning dishwasher spray arms is one of the fastest ways to fix poor washing performance. The whole process usually takes under 20 minutes, yet it can make your dishwasher feel brand new again.

Read More:

How to level a dishwasher properly

How to clean a dishwasher filter

How often should you clean your dishwasher?

Clean dishwasher drain area fast

Sanitize your dishwasher properly