KitchenAid Coupler Removal With Speed Wrench
If your Coupler is stuck on your Blender and you are having trouble removing it by hand you may need to use a speed wrench.
Place the small spanner under the coupler making sure it is located into position then with the speed wrench pull it towards you while holding the other spanner as tight as possible once the coupler has started to loosen you can now remove the speed wrench and undo the coupler by hand.