Models > KSM90OB4 > Instructions

KSM90OB4 KitchenAid Mixer - Instructions

All installation instructions for KSM90OB4 parts

These instructions have been submitted by other PartSelect customers and can help guide you through the mixer repair with useful information like difficulty of repair, length of repair, tools needed, and more.

All Instructions for the KSM90OB4
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plastic worm gear was stripped would nut turn

  • Customer: anthony from harviell MO
  • Difficulty: A Bit Difficult
  • Time to Complete: 1- 2 hours
  • Tools Required: Screw drivers
  • 2 of 5 people found this instruction helpful
replaced worm gear and wonderd why they used plastic instead of a stronger metal gear, unit works fine

wire whip got bent and had to be replaced

  • Customer: Robert from Lynchburg VA
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required:
  • 1 of 2 people found this instruction helpful
just inserted the new wire whip

wire whip came apart

  • Customer: Beverly from St. James MN
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required:
  • 1 of 2 people found this instruction helpful
Really no help from Kitchen Aid sources; but phone call to PartSelect solved the problem. Kitchen Aid repair line didn't even know the part #! Thanks to Part/Select, Christmas cookies are being made.

plastic outer casing on tightening screw had broken

  • Customer: Peggy from Escondido CA
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required:
  • 1 of 2 people found this instruction helpful
This is the tightening screw that holds the attachments into the motor unit of the mixer. Found your web site and reordered 2 replacement pieces (in case one breaks!). Very EZ and user friendly. Thank you!

Mixer suddenly ceased operation after sharp noise

  • Customer: Walter from Athens GA
  • Difficulty: A Bit Difficult
  • Time to Complete: 1- 2 hours
  • Tools Required: Screw drivers
  • 2 of 5 people found this instruction helpful
To access the interior of the mixer, I first removed the single screw holding the cup-shaped part at the rear. Then I removed the 4 large screws on the under surface of the mixer head. Next I removed the bright metal ring around the planetary gear area by prying it off. I then pried the dish-shaped part off the shaft using a large-bladed screwdriver. This exposed 5 screws on the circumference of the planetary gear. By removing them, one can pull up the gears and see into the area below. I found the worm gear had fractured. By removing 3 screws at the base I extracted it for closer inspection, checking for any loose pieces. Beware of the jelly-like grease. The replacement part goes into position, and one then follows the steps in reverse.

stripped nylon drive gear

  • Customer: James from Naperville IL
  • Difficulty: Really easy
  • Time to Complete: 30 - 60 mins
  • Tools Required: Pliers, Screw drivers
  • 1 of 2 people found this instruction helpful
Followed the repair instructions from the manual. ...

I did notice that the replacement part had an extension on it that allowed for the gear grease to be "pulled up" onto the drive gear ( the one that broke), while the unit is running. This feature was not on the original part, but was obviously an upgrade design which was added after my particular mixer was made. I think that the extension on the bracket will help prevent the new nylon gear from binding and stripping as we use the mixer from now on.

I'm glad that PartSelect had the more modern part on hand, and not just an "overstock" from the original, inferior design.

When using the bread hook, the force of the dough would knock the bowl out of the retaining ring on the mixer (Cap-Screw.)

  • Customer: Jerry from Burnsville MN
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Screw drivers
  • 1 of 3 people found this instruction helpful
Three phillips-head screws held the "Cap Screw" in place on the stand of the mixer. After cleaning the stuff out of the screw slots, the screws came out surprisingly easy. After the plate was lifted off, we cleaned the residue from under the plate, placed the new one in position and easily screwed in the 3 screws.
We were very pleased by the quick delivery of the part.

Worm gear broken

  • Customer: Jennife from Lancaster PA
  • Difficulty: A Bit Difficult
  • Time to Complete: 30 - 60 mins
  • Tools Required: Screw drivers, Wrench(Adjustable)
  • 2 of 6 people found this instruction helpful
I called my fiancée.

VERY HAPPY

  • Customer: Joel from Mount Clemens MI
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required:
  • 0 of 1 people found this instruction helpful
EASY

Pin was missing on mixer allowing head to move.

  • Customer: James from Columbus OH
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Screw drivers
  • 4 of 13 people found this instruction helpful
Inserted new pin and tightened set screw.

Replacement of digital window in oven unit

  • Customer: Bedalia from Rialto CA
  • Difficulty: Really easy
  • Time to Complete: 30 - 60 mins
  • Tools Required: Screw drivers, Wrench(Adjustable)
  • 0 of 1 people found this instruction helpful
I did not do the repair myself, however, I contacted a suggested service company which in turn was a company I had used before when I had problems with my JenAir microwave. Excellent service, prompt and very professional. Thank you JenAir for your assistance in providing promptly the parts needed to complete this job.

worn gear

  • Customer: Robert from Auburn ME
  • Difficulty: Easy
  • Time to Complete: 15 - 30 mins
  • Tools Required: Screw drivers
  • 1 of 4 people found this instruction helpful
dissassembled mixer and replaced gear

thumb screw broke

  • Customer: Ethel from Crystal River FL
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required:
  • 0 of 1 people found this instruction helpful
it just screw in.

no mixing

  • Customer: per from highland MI
  • Difficulty: Really easy
  • Time to Complete: 15 - 30 mins
  • Tools Required: Screw drivers
  • 1 of 4 people found this instruction helpful
dis-assemble, replace part, re-lube, reassemble, test good.

worn worm-gear replacement

  • Customer: James from Glendale CA
  • Difficulty: A Bit Difficult
  • Time to Complete: 1- 2 hours
  • Tools Required: Nutdriver, Screw drivers
  • 0 of 1 people found this instruction helpful
Repairing/replacing worm-gear (FSP part# W10112253) for a KitchenAid Stand Mixer model number K5SS. First: I am writing this story because all the videos or repair articles I’ve viewed are either misleading or incorrect in that they do not include older K5SS models. 1. These older models from the mid 1960’s or even earlier have four very large #4 chrome plated Phillips Head Screws holding the mixer base to the motor assembly and NOT four small machine screws (one with a lock-washer) as seen on other repair videos. In addition, the stand is composed of two separate pieces with the bottom half being held together with another four identical #4 chrome plated Phillips Head Screws. The upper four holding the stand to the motor housing (I used a manual impact driver to loosen the very stubborn, #4 Phillips screws) must be removed so as to access the four smaller Phillips machine screws (no lock-washers found here, best buy at least four #10, split, before reassembly) 2. Lastly, you will need two pin punches however the recommended smaller 3/32 inch is still too large to remove the pin in the tower assembly. You will need one size smaller or a #4 pin punch instead. These older Kitchen Aid mixers were built with very tight tolerances. Please be patient and take your time removing the pins. Good Luck……. Jim
All Instructions for the KSM90OB4
46-60 of 141