The short answer
Short answer: run it empty. If a KTN washer is quiet with an empty drum, the machine is fine and the load or the levelling is the problem. Start at debris caught at the pump on this machine.
The symptoms, and the ones that mean something else
- A new machine that shakes violently from its first wash — Transit bolts left in place, which is common and completely free to correct.
- A rumble that rises with spin speed and grows over months — The classic bearing signature, and the one sound on this page that gets worse if it is ignored.
- A knocking from a single heavy item — One towel or a rug spinning alone will bang whatever the machine does.
- NEAR MISS — the noise is the tumble dryer stacked above or beside it — Machines share a floor. Run each alone before deciding which one is making the sound.
What actually causes this, ranked
- Debris caught at the pump — Small hard objects work their way through the drum holes and sit in the outer tub, where they rattle and scrape on every rotation. An underwire from a bra is the classic, and it can eventually damage the drum if it is left. Ranked first: the failure rate is highest here and the test is free, so it is where the diagnosis starts. A smaller brand rarely publishes a service manual to the public, so the order below leans on what is visible from outside rather than what a schematic would tell you.
- Unbalanced load, or a single heavy item — Modern machines try to correct this by stopping, redistributing and retrying, which is why the cycle often gets longer as well as louder. Second, and worth checking before anything is taken apart, since it is visible from outside the machine.
- A machine rocking on three feet — Floors matter too: a suspended timber floor flexes under a spinning machine in a way a concrete one does not, and the same machine can be quiet in one room and violent in another. This far down the list because it needs the two above ruled out before the evidence for it means anything.
- Bearings at the end of their life — The drum runs on bearings behind the tub, and they wear slowly. The noise starts as a faint rumble on the spin, grows over months, and eventually becomes a roar loud enough to hear from another room. Least likely of the four, and the one that only makes sense once the others are ruled out.
What to check first, second, third
- Open the pump filter and look at what is in it — Coins and wires in the trap explain a drain-phase grinding completely. First: the answer here changes everything you do next.
- Run the machine empty on a spin cycle and listen — An empty machine that spins quietly is a machine with nothing wrong. Second in order, and only worth doing once the first has come back clean.
- Check nothing touches the machine at the sides or the back — Including the hoses: a taut hose against a wall drums at spin speed. Third in sequence — useful, but rarely where the answer turns out to be.
What you can do yourself
- Clear the pump filter with the power off and a bowl ready — Wear a glove: underwires and pins are the usual finds and they are sharp.
Tools: glove, bowl, towelsAbout 30 min
- Redistribute the load by hand and restart the spin — Add a second towel to a single heavy item so it cannot sit alone on one side.
About 15 min
- Adjust the feet until all four take weight and lock their nuts — Check with a level across the top, front to back and side to side.
Tools: spirit level, adjustable spannerAbout 30 min
- STOP if the fault is now down to a sealed or high-voltage part — Those need tools, training and a discharge procedure. Write down what you found and hand it over.
Before you open anything
Safety
Power off at the wall before any panel comes off, and close both supply taps before disconnecting a hose. Never wedge or bypass the door lock to make the machine run: it is the only thing stopping a drum turning with the door open.
When this becomes a service call
Stop and call if the drum is rubbing or the machine moves so violently it disconnects its own hoses. Otherwise a noise on spin can wait for a convenient appointment, with the spin speed turned down in the meantime.
Pages next to this one
What this page does not cover
This page is deliberately generalized across the KTN washers it covers. It does not carry model-specific wiring, torque values or component resistance figures — those belong on the page for your family, and that page takes precedence where it exists.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
