What should I do if the motor doesn't start or the Stacked Blade Assembly doesn't rotate?

First, make sure the pitcher is securely placed on the motor base and the lid is securely on the pitcher with the arrows aligned. Verify the blender is turned on by pressing the power button, check that the plug is securely inserted into the electrical outlet, and check the fuse or circuit breaker. If the unit has overheated or been overloaded, unplug it and wait approximately 15 minutes before using again.