Question about KitchenAid K45SS Classic Stand Mixer

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I removed the Side springs ( Brushes) and not the unit wont start

My unit started dying down while i was using an attachment. I removed both side springs to check if the brushes was worn out, It was still long ( 1 inch) i reinstall it and now the unit doesn't turn on.


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You sure boo boo'd. Just kidding It's important that the brushes go in the same way they came out and in the same holes because of the contact patter and curvature wear. The trailing edge of the brush is longer than the lesding edge Which is which? If you were totating something clockwise, the 12 would be the lesding edge and the one would be the trailing. So, the longer of the wear curvature would go on the one(1) side and the shrter towards the twelve. Now, how do you know which way it was rotating? The commutator is the part the brushes ride on, Those copper bars. Look closely and you can tell bby the black tracings which was the leading of rotation. There is usually mor on tracings ontrailing edge of the bar so. The trailing edge of the brush would be on the same side as the black tracings on the copper bar. Of course, Unplug it before messing with it. and make sure the brushes are seated and not binfing in the holder. Use an attachment to rotate the motor once or twice(unplugged) in order to set the brushes. Good Luck, Ned

Posted on Sep 24, 2009


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Well, I was attempting to replace my speed lever. In the process I removed the back cap (electrical circuit board) and the two screws on the side (flat, springs with magnets attached). After I replaced...

Hello Lora,

I understand that you took you speed lever out to replace it and you took the brushes out of each side of the unit. The reason that the unit will not start is more than like the brushes are not installed the proper direction.

1. Unplug the machine
2. Shine a light in the hole on the hole on the side of the unit. You will notice a notch or a piece sticking out.
3. Take one of the brushes (magnet looking things) put the notch and the cut out in the same corner.
4. Repeat the samething with the other side.
5. Plug in and check and see if it runs

This should solve your problem with the brushes. IF you have any more questions about this mixer please post it to this discussion.

THank you for choosing


Mar 13, 2011 | KitchenAid KSM150PS Artisan Series Stand...


KitchenAid mixer not running or needs new brushes.

If you run your KitchenAid mixer long enough it will need new brushes. Symtoms would be eradic running, runs slow (no additional noise) or a smell of sulfur when running.

If your unit has any of these symtoms you should change the brushes. Brushes are available at . They cost $3.55 each and you will need two.

First remove the screws holding in the brushes and remove the brushes.
The brushes have one corner which is shaved off at a 45 degree angle. Make a note of which direction it is facing as this is how the new brushes must be orientated in order to seat properly.

The brushes are located on opposite sides of the main mixer body under a black cover plate with a slot. Remove the cover while holding onto it as it is spring loaded. Remove the brush. Do the other side also.

Remove two screws from the rear of the unit holding the cover between the two halves of the unit (top and bottom). You will need to remove all the screws on the underside of the unit. There should be four total.

Next you will have to remove the power beater driver located at the front of the unit.The shaft located vertically has a pin in it which needs to be driven out with a punch and hammer. Then a "C" clip must be removed from the shaft. Use a "C" clip plier available at any automotive parts store. Place the ends in the holes in the tips of the "C" clip and squeeze. This will release the pressure on the shaft and allow the clip to be removed.

Next pry the bezel off around the exterior of the plate which will expose about 6 screws which need to be taken out. When all the screws are removed you can remove the head assembly as well as the top of the unit exposing the motor armature. The armature will be the blackened, segmented part of the armature directly under the brushes.

At this point you should be able to see how burnt the armature is. Using crocus cloth (available at Lowes or Home Depot) clean the armature until it shines. Do not sand it any more than necessary or sand flat spots in it. A light contact is all that is needed.

Clean the armature with any good electronics parts cleaner, available at Lowes or Home Depot, to get rid of any filings. Clean up any filings or dirt in the unit.

Relubricate The gear box with light grease if necessary. Reassemble the unit and install the new brushes. The brushes will only go in one way and work. If inserted wrong, the unit will not run. The brushes must be seated on the armature.

During the assembly process remember to use Lock Tite on all screws to avoid future problems.

Thanks for using FixYa and for the great rating.


on Dec 01, 2010 | KitchenAid K45SS Classic Stand Mixer

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...

2 Answers

I have kitchenAid KSM150PS. I was grinding Chicken, which I've done many times before. This time the motor began to strain to the point that it did not sound good. I turned the unit off, let it cool for a...

Hello Salsaenz,

Yes, the carbon brushes go in a certain way. If you notice the brushes have a notche cut out on one side. Take a light and shine it in the machine and you will notice a piece sticking down the notch goes that way. The notch changes from side to side so you will have to do this on both sides. This will put the power/brusches back in the proper way.

Thank you for choosing FixYa and do not hesitate to ask more questions.

Mar 09, 2011 | KitchenAid KSM150PS Artisan Series Stand...

1 Answer

I used my k45ss mixer last saterday it did the job. I let it plugged until sunday and since then it's dead. What happened... could it be the plug... Sue

I have heard similar problems when the mixer has been transported. It usually happens if the mixer is transported on its side. If there was any burned flour on the brushes the jostling of the mixer can cuse it to get between the brushes and the armature.

So 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.

Jan 18, 2011 | KitchenAid K45SS Classic Stand Mixer

1 Answer

My 10 yr old son decided to "work " on my mixer ,

Jim, hi- um, you're reading this with your son, right?

Inspect the brushes carefully, be sure that the little copper wire is firmly attached to both the brush and the little disc at the other end of the spring. Clean the brushes well, allow no oil at all to contact them and if they have gotten oil on them (including cooking oil) clean them with a spray can of electric motor cleaner. If you use non-flammable motor cleaner you will have less of a chance of starting a fire, but it's much slower to evaporate. When you put the brushes in, look at the ends and turn the brush so that the hollow worn into the end fits properly to the commutator. The mixer will run with the brushes turned wrong, but it's simply good practice to fit them properly.

Dust and corrosion will accumulate between brushes and their holders, and it's very possible for a brush to not go all the way into position when reinserted. Again, the electric motor cleaner will help- spray a bit down the hole and on the brush, slide the brush in and out and note any stickiness as it reaches the bottom of the hole. Each brush must contact the commutator with the full pressure of the spring behind it and be free to move as the machine is used and the brushes erode. Note that cleaning the holders can take several tries, and if there is crud in the holder the condition will get worse before it gets better, so take note of how the brush moves, especially at the bottom of its travel. When it's clean you'll be able to hear it contact the commutator when you put it down the brush holder.

If you look down the brush hole you'll see the commutator- the copper bars of the commutator should have a pretty, burnished appearance and the insulation between them should be clean and not standing up above the bars. Black sooty looking deposits and/or pitting indicate that the brushed have not been advancing to the commutator with wear as they should, and arcing has been taking place. This will be caused by dirty brushes binding in their holders or by worn out brushes that are unable to advance or by the commutator bars wearing faster than the insulation between them- a condition referred to as "high mica".

Good luck, and buy that kid some tools- there's a lot more to discover inside that mixer..


Dec 22, 2010 | KitchenAid Food Mixers

1 Answer

I have a Kitchenaid K5SSWH. It just recently started having a problem where it will only go up to certain speeds, then it won't speed up anymore. First it would go up to 6 speed, and if you put it past...

The brushes might need replacing. On each side, near the top of the body are 2 button that are unscrewed and removed. They have a spring and brush attached. There are fairly easy to replace. When I need new brushes, I order them from McNickels in Michigan. 1-800-562-4226

Sep 15, 2010 | KitchenAid K5SS Heavy Duty Commercial...

2 Answers

Took brushes out to check and cannot get kitchenaid mixer to work.

Look at the brush from the side.. The surface that rides on the armature is curved> One leg is longer than the other leg. The long leg is the trailing and the short is the leading edge. Looking at the cooper end of the motor you can tell which way the motor rotates by the traces the brushes make. The leading edge will be on the clean side and the trailing edge is the side that is smeared black.on tthe copper. The long leg of the curve on each brush goes on the smearch side of those copper bars the brush rides on. Both brushes. Looking in the hole of the brush holders you will see what I mean. When you put the brushes in, you must make sure they are up against the copper and the springs are holding them down evenly.. You can lift the brush carefully and let it go to make sure it is working freely. Now, see if you can put an attachment on and turn it by hand. I'm not sure you will be able to so don't bend anything or hurt yourself.. Put the brush caps back on, remove the attachment and plug the mixer in.. Attachments off, fingers clear, turn it on. Does it run? If not, tap the mixer on its side with your hand.. Make sure the switch is on high. Tap it several times if need be. This is to straighten up the brushes to where the springs want them. When the motor starts turning, slight taps help. Keep it going until it picks up speed and let run for five minutes to seat the brushes. Let me know if it still won't run. I'll be watching for a comment from you.

Oct 26, 2009 | KitchenAid KSM150PS Artisan Series Stand...

1 Answer

Wife removed rear cover, blew out dust, brushed lightly with toothbrush. Also removed round black cover on side releasing a spring and cam but seems to be put back correctly. When plugged into power outlet...

There may be a few solutions to you problem. it could be that the carbon brushes located at the left and right of the unit are either gone or improperly seated, as they will only work one way. part number for the brushes is 9706416 after checking these and if they are okay. i would check the board to see if there was any bending atall during the cleaning. there is a metal arm that the white actuator slides into on your board. if this metal arm has been bent even by a 1/4 inch or more it wont make contact and your unit will not operate.hope this helps


Oct 04, 2009 | KitchenAid K45SS Classic Stand Mixer

1 Answer

No Power to Mixer

If the motor worked prior to removing the brushes you most likely installed the brushes incorrectly. Remove the brushes and using a flash light look in the brush holder on the mixer. You will notice a small tab at the very end. That tab will prevent the brush from coming in contact with the motor armature if installed incorrectly. Clock the brush so that the angled side lines up with the tab and you should be back in business. Also if you are installing the original brushes use the wear marks to determine which side the brush came out of.
The original issue you had is most likely the nylon gear that is talked about in other posts on here.
Good luck

Nov 18, 2007 | KitchenAid 32685 Mixer

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