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Replace oster kitchen center base drive part

How do I replace the part on the base of the oster kitchen center series 900 part that mates with the drive part on the top module. It is the part just below the square drive pin that is visible as you look at the base from the top. The square drive pin will unsrcrew for removal, but how do I remove the piece below it for replacement?

Posted by jmbird on

  • bbbs Feb 26, 2008

    Somebody please help us.I have the new bottom(base)part in hand it has threads on it,but is impossible to get out.

    Any help would be appreciated.

  • Anonymous Mar 16, 2014

    Hi I am looking for a jar for Oster mixer - I have the base if that is going to help - pls call me on 056 3799870 - Thank you - Philips.


2 Answers


I'am the guy who posted the comment I found out how to do this.
There are 2 possible solutions the 2nd is not pretty, hope the first works for you it didn't for me.

1- The motor must be lock up, by placing a thin screwdriver through the holes in the base into the fan down into the motor,holding the screwdriver, remove the square drive from the top.The part you are trying to remove actually is screwed into a gear in the gear box, you will need a spanner wrench,(sometimes a strong pair of long nose pliers will work, engage the spanner holes,hold the screwdriver ,and try to unsrew it, you may need someone to hold the screwdriver,because it takes a lot of force to loosen it.These are regular threads,and unscew counter clockwise.

2- if #1 doesn't work-this will- but its not so pretty.The motor assembly attached to the gear box will have to be removed,it will come out as one piece
Remove the bottom plate,unplug the white wire from the speed control,and the blue- white wire from the board,also you will have to remove one of the brushes with the white -blk lead.
Now you will have to actually break off of the top plastic(bakelite)by whatever means you dream up (I actually used a small wood chisel to score a line, and crack it) once its cracked, it breaks apart easily.Once thats done turn it over and remove the four screws holding the gear box to the housing you will now be able to remove the gear-box motor assembly.
Remove the 3 screws from the top of the gear box pry the box open,remove the gear with the piece that needs to be replaced,now you need to get the piece unscrewed from the gear.I did this by locking the nurled end into a vise, and very carefully grabing the gear teeth with large channel locks(if you think of a better way thats great)it work for me,but I was very concerned about the gear teeth,you can't slip.
Try the new piece to make sure it sets all the way down to the bottom of the gear(it must or your head will be to high ,and won't lock down)if all is well,make sure everything is greased,and start re-assembly, the new coupler ,and the square drive will be the last 2 pieces assembled from the top, once again locking the motor with a small screwdriver.

Posted on Feb 28, 2008

  • John
    John Sep 13, 2015

    Thanks for this write up. It is the only resource I could find for help with this. I was not so lucky as to get a bakelite center drive. Mine was a tough rubberized plastic, but I was able to cut it from the center pipe with a hole saw. Then the center pipe was too tight in the gear to get with channellock pliers. Two vise grips wouldn't do it either. The one on the gear teeth slipped and scuffed the outer gear surface slightly, so I took it to a machine shop for removal. They put the gear into a vise with wooden faces, but still damaged the gear more than I did. It was only superficial damage though. After cleaning the gear box and repacking with fresh grease, the unit runs so smoothly and quietly. It sounds like new!

  • Lee Smith
    Lee Smith Dec 19, 2021

    So glad we found this post! Option #2 worked. We used a fair bit of Blaster spray to loosen up the parts & a strap wrench to grip the gear without harming it. Still wasn't easy, but it worked. Maybe I can get another 32 years out of my Oster Kitchen Center.



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Advice from a retired auto repair technician who attempted to fix his own Oster Kitchen Center and failed miserably: Save yourself a lot of time and frustration: DO NOT ever attempt to fix ANYTHING on an Oster Kitchen Center. The OKC is a complex piece of kitchen equipment requiring service from trained personnel. For the untrained there are simply too many things that can go wrong. Contact your nearest Authorized Oster/Sunbeam Service Center to have the repairs done right the first time.

Posted on Jan 19, 2013

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Where can I get a replacement fuse for my Oster precise blend 12?

Hello, Frances -

Your question landed in the category of Furniture. I re-categorized your question to the Oster Blenders category.

I found the following information regarding Oster blender built in fuses:
The built in fuse protection has kicked in. To turn the blender back on, first turn the control knob to "Off" and unplug the unit from the wall. Then remove the jar from the base and free the blade of any obstructions. Next, press the external resettable fuse button on the bottom of the base. Wait 30-45 minutes for the unit to cool.
(End quote)
Question: My blender shut off during use. What happened?

If you try that possible solution and the blender still does not start, then . . .this is the link to the Oster Contact Us page:

At the very bottom of the page you will find toll free Customer Service phone numbers.

Or . . .

Fill in the form there, asking about the availability of a replacement fuse for your model of Oster blender, so that you can send an email message.

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Problem with soup mate,all lights flashing but nothing happening

If this is a Kitchen Aid blender with the flashing lights then you will need to remove the motor base cover and check the motor for a circuit. If it is open circuit then either replace the motor or locate the thermal fuse (under some white tape and aluminium clip on one of the field windings) and either replace or bypass fuse if it is open circuit.

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There is liquid leaking through the bearing on the base that adapts to the motor. Is there a service repair center in my area, my zip code is 60415? shows one Oster service center in Illinois:

Household Appliance Sales and Service 7034 North Milwaukee Avenue
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Fax: 847-647-2214

It's a roughly 45-minute drive from your zip code, according to Google Maps. You may want to call them with a description of your problem and see if they can service. There are also several locations in PA that will service Oster blenders.

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hello mam
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The blender coupling on my oster snapped in half. I have the replacement part already I just cannot figure out how to get the broken coupling off the base of the motor. I also got a replacement square...

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