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
121-135 of 141
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Motor runs, no motion at the business end of the mixer.

  • Customer: Robert J from Stephenson MI
  • Difficulty: Easy
  • Time to Complete: 30 - 60 mins
  • Tools Required: Screw drivers, Socket set, Wrench(Adjustable)
  • 0 of 0 people found this instruction helpful
Took the mixer down to the gear box. Found the plastic drive gear had a few stripped teeth. Did a search on the internet for the mixer gear. Found a couple of suppliers. Ordered the needed gear, pin and a bearing block just in case it was worn. The bearing block did not need to be replaced. Cleaned the broken off teeth from the gear grease and put the mixer back together. All worked fine when I plugged it in.

Mixer would stop spinning.

  • Customer: Joseph from Cincinnati OH
  • Difficulty: Easy
  • Time to Complete: 30 - 60 mins
  • Tools Required: Pliers, Screw drivers
  • 0 of 0 people found this instruction helpful
I found a video on how to repair mixer that would not turn. Watched video several times and replaced worn worm gear. Getting the old worm gear was the most difficult part of the job. I had to go purchase a pin punch ($5.50) with the correct tool is was easy.

BRUSH'S WORE

  • Customer: Gary from Scottsburg IN
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Screw drivers
  • 0 of 0 people found this instruction helpful
CHANGE BRUSH'S

One of the parts broke 3 teeth and did not work anymore.

  • Customer: Amalia from Granville OH
  • Difficulty: Easy
  • Time to Complete: 30 - 60 mins
  • Tools Required: Screw drivers
  • 0 of 0 people found this instruction helpful
Unscrew and dismounted the mixer, gather all pieces and screws, cleaned and washed every part, took away the old grease and replaced it with a new one, also looked carefully for the lost teeth and found them, Put grease in every part, put back and screwed all the pieces of the mixer, then tried the mixer which worked really well.

37 year old screw cap worn, wouldn't hold bowl with heavy dough

  • Customer: William from Spring Valley CA
  • Difficulty: A Bit Difficult
  • Time to Complete: More than 2 hours
  • Tools Required: Screw drivers
  • 0 of 0 people found this instruction helpful
Easy removal of old screw cap, but new one didn't just drop in. Had to scrape paint and a little aluminum to make it fit. Finally did, and it works fine now.

Mixer jammed, then would not mix, motor ran

  • Customer: Gordon from Seneca SC
  • Difficulty: A Bit Difficult
  • Time to Complete: 1- 2 hours
  • Tools Required: Pliers, Screw drivers
  • 0 of 0 people found this instruction helpful
Wish that I had known about the video before disassembling. I did not know if it needed a part or was just jammed. It was clear that i needed a worm gear. So I ordered that. It turned out that I needed the Pinion Shaft w/ gear too. So another order. The shipping far exceeded the cost of the parts. NOTE: Clear off as much grease as necessary to be certain that there are no stripped gears anywhere, the order the parts. I took the mixer head off of the stand. I would suggest that you take a bath towel, roll each end towards the center, and place the mixed head so that it is supported on both sides by the towel rolls. NOTE2: Shipping was great 2 days or less. One part arrived on a Saturday. P>S> I do not know the age of this mixer. The age drop down menu should have an UNKNOW option.

The speed control lever was bent and broken from a fall

  • Customer: Jim from Longmont CO
  • Difficulty: Easy
  • Time to Complete: 30 - 60 mins
  • Tools Required: Screw drivers
  • 0 of 0 people found this instruction helpful
Per a video on this site, I removed the stand part, then removed the rear electrical cover and aluminum band which wraps around the mixer. Next, remove the drip ring and planetary gear (use a punch). Then remove the 4 screws securing the bottom housing and the 5 screws around the planetary gear housing. You should be able to pull the upper and bottom housings apart now. This exposes the control lever. Just unscrew it and replace it. Re-install all parts in reverse order.

would not run

  • Customer: andrew from bridgeville PA
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Screw drivers
  • 0 of 0 people found this instruction helpful
I just put in the new brushes

The coating on my flat beater had chipped; did not think it was safe continue using.

  • Customer: Gennette from Yuba City CA
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required:
  • 0 of 0 people found this instruction helpful
It was actually not a repair problem; just a replacement of a part. I ordered it one day and the next day the part was here. I have never had such a quick turn around in anything I have ordered. THANK YOU!!!!

Broken worm gear

  • Customer: John from Wheeling IL
  • Difficulty: Really easy
  • Time to Complete: 30 - 60 mins
  • Tools Required: Screw drivers
  • 0 of 0 people found this instruction helpful
I followed the video that was with the worm gear pausing at each step until I completed each step. The only different I did was to replace the grease in the gears and housing of my mixer. I figured with the gear busted, it was going to leave broken teeth in the grease. As I removed the grease I did find a couple of worm gear teeth. Thanks, Parts Select for the parts and video. You save me lots of $$$$.

grease from housing leaking into bowl

  • Customer: Marvin from Hemet CA
  • Difficulty: Easy
  • Time to Complete: 1- 2 hours
  • Tools Required: Pliers, Screw drivers
  • 0 of 0 people found this instruction helpful
Followed instructions found onllne at Kitchenaid.com and replaced seals with parts obtained from PartSelect.

The worm gear was damaged

  • Customer: Ashok from Sterling VA
  • Difficulty: Really easy
  • Time to Complete: 30 - 60 mins
  • Tools Required: Screw drivers
  • 0 of 0 people found this instruction helpful
I how the video for replacing the worm gear on your website. It help me a lot. I followed step by step instruction display on video. It was great help.

Worm gear broken.

  • Customer: Erwin from Northport ME
  • Difficulty: Really easy
  • Time to Complete: 1- 2 hours
  • Tools Required: Pliers, Screw drivers
  • 0 of 0 people found this instruction helpful
Followed directions video on line. good directions.

Plastic worm gear stripped

  • Customer: Pete from Tracy MN
  • Difficulty: Really easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Screw drivers
  • 0 of 0 people found this instruction helpful
The plastic worm gear was stripped,I took it apart first then cleaned out all the old grease so when the new part came it together like a charm.

Motor ran rough and weak with squeaking sounds

  • Customer: Peter from Brooklyn NY
  • Difficulty: A Bit Difficult
  • Time to Complete: 1- 2 hours
  • Tools Required: Nutdriver, Pliers, Screw drivers, Socket set
  • 0 of 0 people found this instruction helpful
Initially I thought this was due to worn motor brushes. I replaced the brushes but it did not fix the problem. Stator tested OK with an ohmmeter so I figured it was the armature part #PS3651001. Ordered that next and that fixed the problem. Spent 25 dollars which beats buying a new one. Next time I'm buying a used one from the 60s or 70s when they made them better! One tip - I had a hard time removing the pin that you need to remove the helical gear. Heating it with a heat gun helped a lot, also helped with replacing it after.
All Instructions for the KSM90OB4
121-135 of 141