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KitchenAid Blender Drive Coupling Installation Instructions To remove your old blender drive coupling, you will need the following tools: Hammer or mallet Punch or other impact tool Some things you will need to know before you start.1. The drive coupling has a reverse thread. This means it will screw off in a clockwise motion, while installation will require you to screw it on in a counter-clockwise manner.2. There are a couple different ways to remove this coupling. However, in our experience the easiest way is to impact the coupling in order to break the seal it has made with the motor shaft. Step 1Position the blender facing you. Then position the punch or other impact tool, pointing away from you, on the left side of the drive coupling. Step 2Strike the butt of the impact tool, with a hammer or a mallet, sharply. This will cause the coupling to spin clockwise releasing it from the motor shaft. It may take 2 or 3 tries depending on how tightly your old coupling is attached. Repeat as necessary.