Normally they are threaded on, to remove them they need to be shocked to turn in the same direction as they turn when operating. A solid screwdriver and large hammer to whack it to turn in the normal direction it rotates when being used.
SOURCE: Kitchen Aid Blender Rubber Coupling replacement
Someone else suggested a link that explains exactly how to unthread the old coupling... and it works. It took me about 90 seconds to fix my blender. But in case that link is dead, here's a summary:
(1) Note that the coupling (the round part with teeth) is threaded to the blender motor in reverse to a standard threading. So it screws off just like a bottle top, but in a clockwise direction.
(2) place the blender base on a tabletop, facing you. You should probably unplug it.
(3) take a punch or a flathead screwdriver, and place it against one of the coupling teeth that is furtherest away from you.
(4) strike the back of the screwdriver with a small hammer or maillot. The result will spin coupling clockwise. It may take several tries, but the coupling will eventually spin clockwise faster than the motor, and it will begin to unthread.
(5) unscrew the old coupling, and screw the new coupling into place (counterclockwise). Note that the new coupling will tighten itself every time you use your blender, so no need to worry about tightening it too much.
(6) Make a smoothie to celebrate your success!
SOURCE: Krups 243 blender clutch wheel
These little jewels are threaded onto the motor shaft so they tighten up when in operation. To remove, you will have to immobilize the motor shaft. See if you can insert an icepick or screwdriver into the blades of the motor fan on the bottom. Then using a punch and hammer, gently tap the clutch disk in the direction opposite from its normal rotation.
BE CAREFUL not to use so much force that you break either the clutch disk or the motor fan blade.
SOURCE: Krups blender drive gear
Ed,
The problem I had was removing the grey rubber drive. The solution is that it screws off not pops off. The trick is to use narrow needle nose pliers to grab the post that attaches to the motor and turn the rubber drive counter clockwise. Removing the motor becomes easy. Pull out the 4 rubber feet under the base and the screws will be exposed. However my situation was the grey drive gear was stripped and would bottom out. My solution was to use a same size lock washer as the washer between the post and the drive. So far so good! If it fails I will need to buy another grey drive. Myron
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