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4KSM90PSAC0 KitchenAid Mixer - Instructions

All Instructions for the 4KSM90PSAC0
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No rotation on mixer
You tube has great instructions! I would suggest when you buy a part to let customer know that they need a food grade gear grease ordered to complete the reinstall of all gears and body parts!
Parts Used:
Worm Gear
  • Linda from ELY, MN
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Screw drivers
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old stand mixer mixing bowl base will not firmly hold newer mixing bowls
With a screw driver remove the screws holding the old base in place. With a flat head screw driver carefully pry and remove old mixer base. With 600 grit sandpaper clean and make smooth any burrs or rough spots in the mixer base recessed area. You can use some light grease and coat the outer edges of new mixer base and place in the now cleaned mixer base recessed area. The new base maybe a tight fit and not be fully seated in the recess. If a tight fit, place the piece of 2x4 piece of wood over the new part that is in the recess and carefully tap the base home using the sledge hammer. Check to see, if the base is fully seated. If not fully seated, tap again When fully seated replace the screws. You may have to adjust the height of the stand mixer head with mixer paddle attached for proper clearance between bowl and paddle. See your mixer manual for adjustment procedure
Parts Used:
Screw Cap
  • Susan from BATTLE GROUND, WA
  • Difficulty Level:
    Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Screw drivers
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Plastic worm gear gave way (as designed) when the grain mill over-worked it.
I did exactly what the PartSelect video demonstrated after watching other DIY videos on the Internet, thus I did not remove the stand which seemed like a little too much for a simple straight forward repair. This is the second time I have replaced this gear. The first time was about 10 years ago when the bakelite gear broke on a 30 year old KitchenAid K
-45. That mixer made hundreds of loaves of bread after grinding many pounds of wheat berries. The only reason we had to replace it was that it walked off the flour dusted counter and landed on its head when my wife had her back turned. Otherwise we would still be using it. :-)
Thanks for the excellent service and instructions.
Parts Used:
Worm Gear
  • Robert from CEDAR CITY, UT
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Screw drivers
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Kitchen Aid Mixer won't spin
Order the worm gear part number PS11748374.
Watch this video.
https://www.youtube.com/watch?v=VeCiivPt7hk

I would recommend two people if possible.
Parts Used:
Worm Gear Lever, Latch (Black)
  • Jon from SALINAS, CA
  • Difficulty Level:
    A Bit Difficult
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Screw drivers
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Control stuck in high gear.
With the mixer being over 30 years old we believed it has going to have to be replaced. However, my husband jumped on uTube and looked at reviews for the problem. Motor was only running on high speed. Reviews said to replace the phase control board. Repair was very quick by just taking off the cover. Removing the old board and connecting the new. Mixer is working awesome once again. In such a disposable society it is great to be able to fix vs trash. Happy Baker.
Parts Used:
Phase Control Board
  • Ann from OSSINEKE, MI
  • Difficulty Level:
    Very Easy
  • Total Repair Time:
    Less than 15 mins
  • Tools:
    Screw drivers
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Mixer operarates at high speed only.
Removed old one and replaced with new one.
Parts Used:
Phase Control Board
  • GALO from DECATUR, GA
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    Less than 15 mins
  • Tools:
    Screw drivers
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The mixer would not operate so I took out the brushes. Work afterwards but was a little noisy so, considering the advanced age of the machine and after doing research, I decided to replace the worm gear and bracket.
I followed the instructional video linked to my email order confirmation. Partselect provided one of the best how-to videos I've ever seen. With the right tools, a little patience and the video, I had an outstanding repair experience.
Parts Used:
Motor Brush Worm Gear and Bracket
  • Benjamin W. Tice, from El Paso, TX
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Screw drivers
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Teeth on the gear were worn off.
Took each area apart. Replaced the gear and reassembled it.
Parts Used:
Worm Gear
  • Curt from SHELBY, MI
  • Difficulty Level:
    Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Pliers, Screw drivers
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stripped worm gear
i disassembled the mixer until i could remove the worm gear; is in a housing that that includes another gear and shaft. make sure you have a magnetic tray to put parts in as you work or you will spend more time looking for parts than reassembling the mixer. once you have the gear housing out you will need a small diameter punch to drive out the pin that holds the gears in the housing(i used a 5/32 transfer punch.) make sure you punch the pin out where it will be caught or you will need to order that part because you will not find it. after knocking the pin out it is just a matter of removing the old gear, putting the new one in, and reversing the steps and getting everything reassembled.
Parts Used:
Washer Worm Gear Transmission Case Gasket
  • dale from AMSTERDAM, OH
  • Difficulty Level:
    A Bit Difficult
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Screw drivers
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Worm gear was worn out .
I watched the university of YouTube videos, and followed their instructions.
Parts Used:
Washer Worm Gear
  • Peter from SALADO, TX
  • Difficulty Level:
    A Bit Difficult
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Pliers, Screw drivers, Wrench (Adjustable)
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The mixer was given to my wife. Sometimes it would work or not.
When I took the back cover off I found two parts that "could" be the problem. The speed control plate was cracked which explained the spotty working. I ordered both parts and installed them very easily. The parts fit perfectly and resulted in the mixer working perfectly. I can't say enough about the excellent parts. They were perfect.
Parts Used:
Speed Control Plate
  • James from SAINT PAUL, MN
  • Difficulty Level:
    Very Easy
  • Total Repair Time:
    15 - 30 mins
  • Tools:
    Pliers, Screw drivers
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Attachment hub stopped spinning
Used youtube movies to disassemble the mixer and found that the gear was stripped. I kept the screws in labeled ziploc baggies so I wouldn't forget which screws went where. Once the part arrived, it was very simple to replace the gear. I regreased the mixer and then reassembled. The trickiest part was how greasy everything was! It was also hard to get the pin through the beater hub - I found a video that suggested using a very slim screwdriver to thread the hole before inserting the pin. This was the most involved part replacement I've done on my own, and it was very satisfying to get my mixer back in working order!
Parts Used:
GEAR-HUB
  • Sarah from GRAPEVINE, TX
  • Difficulty Level:
    Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Screw drivers
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Damaged insulation on the cord
Removed back cover, disconnected the 2 push-on connectors, removed ground wire screw. Reversed the process to install new cord.
Parts Used:
CORD-POWER
  • Dennis from WESTERVILLE, OH
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    15 - 30 mins
  • Tools:
    Screw drivers
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Mixer making a grinding noise
replaced gear, and brushes.
Parts Used:
Brush Holder Cap - Black
  • Jamie from FLORENCE, CO
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Screw drivers
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over heating
followed the emailed instructions from your company
worked perfectly
thanks
Parts Used:
Motor Brush
  • KATHERINE from INVERNESS, FL
  • Difficulty Level:
    Easy
  • Total Repair Time:
    Less than 15 mins
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All Instructions for the 4KSM90PSAC0
121 - 135 of 229