How to Deep Clean a Speed Queen Washing Machine
# How to Deep Clean a Speed Queen Washing Machine
A deep clean of a Speed Queen washing machine removes built-up detergent residue, fabric softener film, and hard-water scale that causes odor, slow draining, or error codes. Plan on a 90-minute process using a cleaning agent that targets mineral deposits, then manually scrub the spots gravity washing always misses.
## Start with a Hot Cleaning Cycle — Then Do the Manual Work
Set the machine to the hottest water setting, largest load size, and longest cycle (usually “Heavy Duty” or “Sanitary”). If your model has a “Clean Washer” cycle, use that instead.
**First, unplug the machine and remove all laundry.** Pull out the detergent drawer if your model has one. Shine a flashlight into the drum and look for grey sludge clumps stuck to the upper drum wall or under the agitator fins. If you see heavy residue, your machine has skipped several cleanings and will need the full soak-and-scrub process. If the drum looks clean, a simple hot cycle with vinegar may suffice for maintenance.
Add your cleaning agent directly to the drum, not the dispenser. Start the cycle and let it agitate for 5 minutes. Pause the cycle — let it soak for 30 minutes. The soak allows the solution to break down residue inside the drum and behind the baffles. Resume the cycle and let it finish.
**Common mistake:** Using too much cleaner creates extra suds that trap dirt and can leave a film. Stick to the measured amount recommended for your cleaner. If you see excessive foam during the soak, stop the cycle and add a splash of white vinegar to break down suds before resuming.
## Scrub Three High-Residue Zones While the Drum Is Still Hot
After the cleaning cycle finishes, immediately address these three areas where residue hides.
### Under the Agitator — Top-Load Models
Remove the agitator by unscrewing the center bolt (if accessible) or pulling it straight up. Speed Queen top-loaders often have a plastic cap you pry off with a flathead screwdriver. Use a stiff-bristle brush and a vinegar-water solution (1:1) to scrub the base where the agitator sits. This is where detergent slime collects and causes odors. Rinse the area with a damp cloth, then reinstall the agitator. If you cannot remove the agitator, pour the vinegar solution directly over the fins and scrub with a long-handled bottle brush. For a detailed guide on this process, the [effective methods for cleaning a speed queen top load washing machine](https://homeappliancefixing.com/effective-methods-for-cleaning-a-speed-queen-top-load-washing-machine/) page covers specific model variations.
### Behind the Drum Gasket — Front-Load Models
Pull back the rubber door gasket and wipe underneath with a cloth soaked in vinegar, scrubbing any dark mold spots. Run a paper towel along the gasket lip — if it comes away brown or slimy, you have biofilm that needs a second treatment. Leave the door ajar after every wash to let the gasket dry completely. For stubborn mold, apply a paste of baking soda and water, let it sit for 15 minutes, then rinse.
### The Detergent Drawer and Its Housing
Remove the full drawer and soak it in hot water with a splash of bleach (if white) or vinegar (if colored). Scrub the drawer cavity inside the machine using a bottle brush — residue here feeds mold into every wash. Reinstall the drawer only after both the drawer and the cavity are dry. If the cavity has a musty odor even after scrubbing, pour a cup of vinegar into the drawer opening and let it sit for 10 minutes before rinsing.
## How to Clean the Lint Filter and Drain Pump Filter
Speed Queen machines have two filters that collect debris. Neglecting them causes “no drain” or “ud” error codes.
**Lint filter** (top-load models — usually on top of the agitator or inside the drum wall): Rinse it under hot water, scrubbing away fabric softener buildup with an old toothbrush. Cleaning the lint screen after every load prevents buildup from reaching the internal sump, so make that a regular habit.
**Drain pump filter** (front-load models — accessible behind a small panel at the bottom front): Unscrew the cap carefully — place towels underneath because water will spill. Remove hair, coins, and lint clumps. Rinse the filter screen before reinstalling. If the filter is caked with grey sludge, your machine has been overdue for a cleaning. For a visual guide on this step, see the [how to clean speed queen washing machine filter](https://homeappliancefixing.com/how-to-clean-speed-queen-washing-machine-filter/) walkthrough.
While you have the bottom panel off, wipe down the drain pump housing interior with a rag. If you find a coin or debris lodged beyond the filter, use needle-nose pliers to extract it — that blockage alone can cause a “ud” error.
## Catch the “Slow Spin” Warning Sign Before It Costs You
The most common failure mode people miss is gradual spin cycle slowdown. Clothes come out wetter than usual, or the machine takes longer to finish. Cause: residue on the tub wall drags against the inner drum, forcing the motor to work harder. Over time, this stresses bearings and belts.
**How to catch it early:** After a normal wash, run a Quick Spin cycle with nothing inside. Time how long the machine takes to reach full spin speed. If it hesitates or the drum wobbles noticeably, you have heavy buildup. Clean immediately — ignoring it can lead to a [speed queen washing machine deep cleaning](https://homeappliancefixing.com/speed-queen-washing-machine-deep-cleaning/) that costs more in labor later if bearings wear out.
**Stop and escalate if:** After two deep cleaning cycles (including the soak and scrub steps above), the spin still stutters or the machine displays a “ud” or “uL” error code. That points to a mechanical issue — a worn drive belt, failing bearings, or a misaligned tub. At this point, stop running any further cleaning cycles and contact a repair technician. Running the machine through more hot cycles with a failing bearing can damage the outer tub and cost more to fix. If the machine is under warranty, call Speed Queen support first.
## Cleaning Agent Comparison
| Cleaner | Best For | How Much | When to Use |
|———|———-|———-|————-|
| [Affresh tablet](https://www.amazon.com/dp/B09K5QQQ6S?tag=homeappliancefixing-20&linkCode=ogi&th=1&psc=1) | General residue and odor | 1 tablet per cycle | Every 2 months or when you smell mustiness |
| Citric acid powder | Hard-water scale and detergent film | ½ cup (measure exact) | Every 3–4 months in hard-water areas |
| White vinegar | Light maintenance and mildew prevention | 2 cups directly in drum | Monthly on a hot cycle (safe for seals) |
Do not mix citric acid and bleach — toxic chlorine gas can form. Rinse thoroughly between different cleaners. For a full breakdown of shop-bought vs. household options, the [best products for cleaning a speed queen washing machine](https://homeappliancefixing.com/best-products-for-cleaning-a-speed-queen-washing-machine/) guide covers what works for different water types and residue levels.
## Check These Before Calling the Machine Clean
Run one short hot rinse cycle (no detergent, no clothes), then perform these pass/fail checks:
– ✅ Open the door — no leftover suds or bubbles visible. **Fail:** run an extra rinse cycle.
– ✅ Smell inside the drum — neutral or faint citrus, not musty. **Fail:** repeat the scrubbing of the agitator base and gasket.
– ✅ Wipe the back wall of the drum with a white cloth — no brown or grey residue. **Fail:** run another citric acid soak.
– ✅ Remove and inspect the lint filter again — no slime or dark specks. **Fail:** scrub the filter with vinegar and a toothbrush.
– ✅ Run a Quick Spin and observe — smooth acceleration, no shudder, no prolonged hesitation. **Fail:** heavy buildup likely remains; repeat the entire deep clean procedure.
If any check fails, take the corrective action listed. One pass is enough for most machines, but heavy neglect may need a second citric acid soak. If after two full deep cleans the spin still hesitates, escalate to a technician as described above.
> Speed Queen’s product care guide states: “Clean the washer interior at least every 2–3 months to prevent odor and extend the life of the machine. Use only cleaners labeled as washing machine safe.” (Source: Speed Queen Owner’s Manual, Section 9 – Care and Cleaning.)
## Frequently Asked Questions
### Can I use bleach instead of vinegar or citric acid?
Yes, but only if your machine has a known mold problem and you plan to follow up with a rinse cycle. Bleach degrades rubber seals and the door bellows over time, so limit its use to once a year at most. If you use bleach, run two extra rinse cycles afterward to remove all traces.
### My Speed Queen still smells after this deep clean — what now?
The odor is likely trapped in the drain hose or the internal sump. Pour 1 cup of baking soda directly into the drain hose opening (after removing the hose from the standpipe) and flush with hot water. If the smell persists, you may need to inspect the drain pump housing for debris. Another common cause is a forgotten laundry item stuck inside the drum — check under the agitator and in the folds of the door seal.
### How often should I deep clean my Speed Queen?
If you use liquid detergent and fabric softener, deep clean every 3 months. With powder detergent and no softener, every 6 months is enough. Run a monthly vinegar maintenance cycle for odor prevention. In areas with very hard water (over 10 grains per gallon), switch to a citric acid clean every 2 months.
### Is citric acid safe for my Speed Queen?
Yes — Speed Queen’s official cleaning recommendations for removing iron and mineral deposits include citric acid-based cleaners. Avoid using it more than once a month to prevent any potential wear on the rubber drain pump hose. For routine maintenance, vinegar is gentler and sufficient.