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KitchenAid's Artisan Series 5 Quart Tilt-Head Stand Mixer model number KSM150PSER. All models starting with KSM150PS are the same device just different colors.

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Gradual loss of lower speeds - now only speed 6 and up work

My kitchenaid 220V when purchased used did not work on stir and speed 1. Eventually over time speed 2, all the way to 8 no longer worked. The machine would sometimes give a half effort to turn and then nothing. My friend took apart the whole machine and put it back together and it magically worked again. He didn't exactly know what he did. He said he just cleaned it up and reassembled it.

Fast forward 3 years, and the same thing has happened. Gradually over 2 months stir stopped working, and now only speed 6 and up work (at proper spinning speed).

Any thoughts?

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Sounds like it's time to impose on your friend again. This time get him to replace the speed control board. Here's how:

KitchenAid KSM150PSER Speed Control Plate Replacement

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UNPLUG the mixer from electric current!!!

At the back of the mixer there is a hemispherical lid with one screw on top of it. Unscrew it, remove the lid.

behind it there is a black plate with copper or brass flat pieces of metal, that is held by 3 screws.

if you move the speed lever now, the plate should move as well.

At the bottom of this plate there is a single screw. Try to screw or unscrew it a few times, replace the lid and try it on.

When I opened mine, this screw was half way unscrewed and thinking it became lose, I tighten it. Then I lost all speeds upwards of 6-7. I put it back in place (half way there) and the speeds became available again.

Good luck. Be extremely cautious when opening it.

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I am not sure if the photos I uploaded here will work, but have a look at kitchenaid au service manual “stand_mixer_service_manual_4177310_9-05.pdf”

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Hello,

What the problem is that the internals are lubricated with grease and that grease has pretty much dried out. What needs to happen is the grease has to be removed (either scraped or flushed with some other chemical) and new grease applied to the gears (pretty much wherever the grease is located now). You can test it without the grease but not for very long or damage may occur).

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