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Models > KSM90ER4 > Instructions

KSM90ER4 KitchenAid Mixer - Instructions

All installation instructions for KSM90ER4 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 KSM90ER4
31-45 of 146
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gear was stripped , head wouldn;t turn

  • Customer: Joan from Nokomis, FL
  • Difficulty: A Bit Difficult
  • Time to Complete: 15 - 30 mins
  • Tools Required: Screw drivers
  • 3 of 4 people found this instruction helpful
We followed the you tube instructional video. It was excellent with good advice that kept us out of trouble. My mixer works like new again.

The worm gear was broken

  • Customer: DONG from Elk Grove, CA
  • Difficulty: A Bit Difficult
  • Time to Complete: 30 - 60 mins
  • Tools Required: Pliers, Screw drivers
  • 3 of 4 people found this instruction helpful
I removed the pin from the outside shaft,then removed all screw around the body of the mixer,then removed the top case out,took 3 screws out from the the gear assembly case......punched the pin out of worm gear then release the little shaft out from the case,replaced a new one....then starting go backward till completely all assembled don't forget lube grease to all gears and test run good very smooth.........it's ok

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:
  • 3 of 4 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!

powder coating came off mixer paddle.

  • Customer: .JENNIFER from STAR, ID
  • Difficulty: Really Easy
  • Time to Complete: Less than 15 mins
  • Tools Required:
  • 3 of 4 people found this instruction helpful
put new paddle on

Base plate destored

  • Customer: Gordon from West Stockbridge, MA
  • Difficulty: Really Easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Screw drivers
  • 3 of 5 people found this instruction helpful
I removed three screws, pulled off the old base plate.
Put new base plate in place and replaced the screws

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
  • 3 of 5 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)
  • 4 of 8 people found this instruction helpful
I called my fiancée.

Attachments would not work, spindle turned erratically, with no power

  • Customer: Kerry from Sherwood, OR
  • Difficulty: Easy
  • Time to Complete: 30 - 60 mins
  • Tools Required: Screw drivers
  • 3 of 5 people found this instruction helpful
Punched out the roll pin to remove eccentric from spindle, undid 5 screws (after removing trim ring), and removed 4 screws to undo the motor housing. Make sure to keep the one screw with a lock washer in the BACK of the housing. Undid the screw on top to remove the back of the motor housing to take out the strain relief grommet, prior to removing the motor housing. Scraped the excess grease into a tub to re-use. Pulled out the shaft, and lifted out the old (stripped) gear and plopped the new one in. Make sure to mark match points for parts, and put the pins back in in the right order. You have to put the 5 screws back in before sliding the trim ring on, and putting the roll pin back. make sure all gears mesh and test before snugging the motor housing screws. Be sure to orient the strain relief grommet securely, and be careful of the filter plates in the back of the housing (they're brittle). putting the grease back is like frosting a cake. Save a little for the planetary ass'y.

broken wire whip

  • Customer: Stanislaw from San Antonio, TX
  • Difficulty: Really Easy
  • Time to Complete: Less than 15 mins
  • Tools Required:
  • 3 of 5 people found this instruction helpful
no instructions necessary

Replace base plate on KitchenAid mixer

  • Customer: Joyce from Great Bend, KS
  • Difficulty: Really Easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Screw drivers
  • 2 of 2 people found this instruction helpful
Took out 3 screws, removed old plate, put down new plate the tightened screws. Runs like new, great service, price, quick delivery!

no mixing

  • Customer: per from highland, MI
  • Difficulty: Really Easy
  • Time to Complete: 15 - 30 mins
  • Tools Required: Screw drivers
  • 3 of 6 people found this instruction helpful
dis-assemble, replace part, re-lube, reassemble, test good.

mixer making thumping noise

  • Customer: Roger from Custer, SD
  • Difficulty: Easy
  • Time to Complete: 30 - 60 mins
  • Tools Required: Screw drivers, Socket set
  • 2 of 3 people found this instruction helpful
disasembled found stripped gesr assembly ordered and replaced went very smoothly. It would have been good to have info and acsess to the correct gear grease to use in a mixer / food grade but it worked out well anyway.shipping was very fast thanks

turn and quit

  • Customer: GARY from BECKLEY, WV
  • Difficulty: Really Easy
  • Time to Complete: 30 - 60 mins
  • Tools Required: Screw drivers
  • 2 of 3 people found this instruction helpful
Disassembled gear housing and replaced worm gear/bracket assembly. The hardest part was cleaning and working around what looked like 2 pound of grease. I will contact you again if I need parts for anything. Thanks.

The Kitchenaid heavy duty mixer's motor would run but the mixer head would not turn.

  • Customer: A. W. from Rogers, AR
  • Difficulty: A Bit Difficult
  • Time to Complete: 1- 2 hours
  • Tools Required: Pliers, Screw drivers
  • 4 of 9 people found this instruction helpful
Obviously the problem was in the gear box of the mixer. I disassembled the gear box by removing the four large screws holding the base then the four screws at the rear and center of the mixer. Then I removed the thin metal ring covering the five screws around the front of the housing by gently prying up with a small screwdriver. The five screws beneth the ring have to be removed with a small blade screwdriver turning them a round at a time in sequence until they are free. Gently pry the two housings apart with a screwdriver and lift our the lower half with the plantary gears. I found the drive gear was stripped. I went to PartSelect on the web, eaisly found the exploded view of the mixer's gear box and ordered the gear I needed. The gear is part of an assembly attached to the mixer housing with three screws. Work around the lubricant in the housing. Within four days I received the new gear, installed it by reversing the above procedures and the mixer is working again. The total cost was $34.85. Not a bad investment considering the mixer cost over $400 and would have been trashed for want of one part.

stripped nylon drive gear

  • Customer: James from Naperville, IL
  • Difficulty: Really Easy
  • Time to Complete: 30 - 60 mins
  • Tools Required: Pliers, Screw drivers
  • 2 of 3 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.
All Instructions for the KSM90ER4
31-45 of 146