Move the KitchenAid KERC607HWW8 away from the wall so that the power cord is accessible. Unplug the power cord from the wall outlet. If the range is hardwired to your home's circuitry, turn off the range's breaker in your breaker panel.
Open the oven door and remove the screws under the front lip of the cooktop. Close the oven door.
Raise the cooktop off of the main body of the range so that the underside is exposed. Prop up the top of the cooktop with a wooden stick so you can remove the burners.
Remove the screws that secure the burner cross braces to the underside of the cooktop. Remove the burners from the underside of the cooktop.
Lift the glass cooktop up and off of the range and set it upside down.
Remove the screws securing the brackets to the underside of the old cooktop and transfer them to the new cooktop.
Place the new cooktop on top of the range and prop it up, using the wooden stick
Reinstall the burners by securing the cross-braces to the underside of the cooktop.
Lower the cooktop, open the oven door, and replace the screws to secure the cooktop to the range.
Restore power to the range, and move the range back against the wall.