Question about KitchenAid KSM75 Mixer

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Hums and spins a little

Runs when grounding out the spring to case on the carbon brush screw

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Sounds like a bad connection on the brushes. Probably replacing the brushes is in order unless you can find the problem and have the expertise to fix it.

Posted on May 26, 2009

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1 Answer

Wont turn on


The two plastic screws are the carbon brush holders, not something you should be fiddling about with unless you are changing the brushes. It is quite common for the brushes to wear out and need replacing so taking the caps off and checking the brush length would be a good idea. The brushes only fit in one way, one corner is ground off to allow it to go past a blocking key in a corner of the holder. Use a torch to see which way to put the brushes back in. If they are too short get new ones.

Feb 05, 2014 | KitchenAid K45SS Classic Stand Mixer

1 Answer

Carbon brush stuck in kitchen aid mixer


What model number is your machine? Try turning it on it's side and shake a little, take a very small screwdriver and grind away to crack the brush and shake it out. Otherwise it is a full tear down to take the brush holder out. Hope this helps if not get back to us for help

Mar 05, 2013 | KitchenAid KSM150PSGR - Artisan Series...

1 Answer

Won't turn on


You may have control circuit trouble, connection issues with the wiring, control board trouble, all rather rare; more common is side effect from attempt to keep a clean kitchen...
...Beneath large (plastic) screw heads each side of mixer are a spring, copper or brass cup, another longer spring and a carbon brush... which may NOT slide out freely- if not, thats doubtless the problem... the carbon has a corner ground off it to insure proper alignment and preserve the commutator (motor life) so it only fits in one way... wrong way it will jam up on the keying device inside the brass or copper brush holder into which it slides. (the key can be seen all the way inside the holder with aid of a flashlight)
IF THIS BRUSH HOLDER SLIDES OUT WITH THE CARBON YOU HAVE A MAJOR MAJOR JOB TO REINSTALL IT CORRECTLY!!! If the carbon becomes an issue you are best advised to use a factory recommended facility for the repair and avoid damage to the commutator or other issues. It may require total disassembly and removal of entire motor, which usually involves disassembly of the transmission in order to remove the armature. In other words, absolute TOTAL disassembly in the worst-case scenario.
Good luck- most frequently its a simple matter, but beware of the heads-up issue. Check the brushes first but put em back carefully.

Oct 12, 2011 | KitchenAid KSM150PS Artisan Series Stand...

1 Answer

I took out the two black flat screws on the side of my KitchenAid mixer and out sprung a spring and magnet. When I replacter them my mixer won't start...


It sounds like you removed the brushes, look in the hole and determine the orientation of the carbon brush( what you describe as magnet). Rotated 90 degrees may keep motor from running...

Mar 12, 2011 | KitchenAid KSM150PS Artisan Series Stand...

1 Answer

How to replace motor brushes? I only can take the small springs after unscrewing the caps on both sides. The carbon brushes are still inside? Tell me how to take them out and just put new brushes with...


I believe the brushes and the spring are one piece, so the brush should come out with the spring. Either the brushes are so worn that you just aren't noticing the little bit that's left, or the block has come loose from the spring. You can tip the machine over so the brush hole is facing down and let gravity do the work. If there's any brush left inside, it should slide out. Otherwise just install the new brushes.

Dec 14, 2010 | KitchenAid KSM90 Ultra Power Series Stand...

1 Answer

Trying to replace carbon brushes on Kitchenaid stand mixer. I understand from reading other answers that there is a ''right way'' to insert them. I did not pay close enough attention in removing old ones...


Check the brushes. They get caked up with burned flour. Remove the brush caps and pull the brushes out by their springs, being VERY careful to note the position of them since they only go back in one way. Measure the free length of the spring before pulling it out. It is critical that you write down the length sticking out with very slight pressure on it so that it is seated against the armature when you measure.

Clean the curved surface of the carbon brushes with a sharp knife being careful not to scratch the curved surface. If you have them installed wrong they will not go all the way in and will not contact the armature and it will not run. Measure the length, as done above, of the spring to make sure it is in correctly!! If it is not in correctly the spring will stick out 1/4 inch longer than it should.

Keep turning the brush until you have the shortest amount of spring sticking out when you press it in all the way then slowly release pressure on the end of the spring. You will know when it is in correctly since the difference in length is noticable. The curvature on the front of the brush must line up with the curved surface of the armature which runs from the front of the mixer to the rear.

Apr 18, 2010 | KitchenAid K45SS Classic Stand Mixer

1 Answer

Mixer won't turn on. I had the pin problem everyone describes. Finally was able to get the pin back in with some serious hammering of the pin and then tightened the set screw on the bottom. Fabulous!...


They are the brush springs. The brushes get caked up with burned flour. Remove the brush caps and pull the brushes out by their springs, being VERY careful to note the position of them since they only go back in one way. Measure the free length of the spring before pulling it out. It is critical that you write down the length sticking out with very slight pressure on it so that it is seated against the armature when you measure.

Clean the curved surface of the carbon brushes with a sharp knife being careful not to scratch the curved surface. If you have them installed wrong they will not go all the way in and will not contact the armature and it will not run. Measure the length, as done above, of the spring to make sure it is in correctly!! If it is not in correctly the spring will stick out 1/4 inch longer than it should.

Apr 17, 2010 | KitchenAid KSM150PS Artisan Series Stand...

1 Answer

Motor does not move.


It is most likely a problem with dirty brushes. Check the brushes. They get caked up with burned flour. Remove the brush caps and pull the brushes out by their springs, being VERY careful to note the position of them since they only go back in one way. Measure the free length of the spring before pulling it out. It is critical that you write down the length sticking out with very slight pressure on it so that it is seated against the armature when you measure.

Clean the curved surface of the carbon brushes with a sharp knife being careful not to scratch the curved surface. If you have them installed wrong they will not go all the way in and will not contact the armature and it will not run. Measure the length, as done above, of the spring to make sure it is in correctly!! If it is not in correctly the spring will stick out 1/4 inch longer than it should.

Apr 03, 2010 | KitchenAid K5AWH Stand Mixer

1 Answer

Worked fine, then didn't- getting power


The easiest thing to check is the brushes. There are two large "buttons" on the sides of the mixer. They have a large slot in them. You can use a quarter to stick in the slot and turn the button counterclockwise. Once removed you will see a spring sticking out. Now this is important. On the other end of the spring is a small carbon bar (the brush) which is square and about half an inch long. Note that there is one corner of the carbon bar, the brush, which is removed forming a flat on that corner. Note the position of the flat so that you can replace the brush in the same position. If you don't then the brush will not contact the armature and the unit will never run!

Once removed examine the end of the brush to see if there is some crud on it, most likely charred flour. Carefully scrape the crud off the brush and re-insert it remembering the above . . .make sure it slides easily into position. If it is sticky then remove it again and clean out the brass hole with a q-tip.

Do this to both brushes and the unit will most likely run.

Of course make sure the outlet you are using has power to it!

If it still doesn't run then there is a problem with the control board or the motor.

Mar 27, 2010 | Food Mixers

1 Answer

Just stopped working, likemit was not plugged in.


The easiest thing to check is the brushes. There are two large "buttons" on the sides of the mixer. They have a large slot in them. You can use a quarter to stick in the slot and turn the button counterclockwise. Once removed you will see a spring sticking out. Now this is important. On the other end of the spring is a small carbon bar (the brush) which is square and about half an inch long. Note that there is one corner of the carbon bar, the brush, which is removed forming a flat on that corner. Note the position of the flat so that you can replace the brush in the same position. If you don't then the brush will not contact the armature and the unit will never run!

Once removed examine the end of the brush to see if there is some crud on it, most likely charred flour. Carefully scrape the crud off the brush and re-insert it remembering the above . . .make sure it slides easily into position. If it is sticky then remove it again and clean out the brass hole with a q-tip.

Do this to both brushes and the unit will most likely run.

Of course make sure the outlet you are using has power to it!

If it still doesn't run then there is a problem with the control board or the motor.

Mar 23, 2010 | KitchenAid KSM150PSAC Hand/Stand Mixer

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