The food processor work bowl and lid must be attached and detached in a specific order to operate. First, secure your blade of choice inside the work bowl. Next, lock the work bowl onto the motor base by twisting clockwise. It will click into place when secured. Next, twist the work bowl lid clockwise so the arrows are aligned and it locks into place. Insert the Food Pusher into the Lid’s Feed Chute. Finally, plug in the motor base. The unit should be disassembled in the opposite order it was assembled: unplug the unit, unlock the lid, then unlock the work bowl from the power base.