With the grill still laying on its side, make sure the assembly fits properly and is able to turn.

Insert the pin/turning handle through the hole underneath the grill.

You will also need to lock the handle in place by turning it until it clicks.

Turn the grill right side up and assess the construction of your cleaning system assembly.

The blades should turn freely toward the bottom vent holes inside of the grill. This will allow ash and debris to be removed.