How to replace a wall oven control thermostat

Shut off the house circuit breakers for the wall oven to completely disconnect electrical power.

Pull the control knob you use to set the oven temperature straight off its stem. Use a Phillips screwdriver to remove the 2 mounting screws on either side of the stem.

Set a sturdy work table or platform just in front of the oven and pad the surface of the table with a towel or cardboard to protect the table.

Open the oven door and remove the mounting screws that secure the oven to the sides of the oven cabinet. Slide the oven forward in the cabinet. You should have enough slack in the electrical conduit of the power supply; if not disconnect the power supply wiring from the junction box for the wall oven.

With someone's help, carefully lift the oven out of the cabinet and set it on the table in front of the cabinet.

Remove the mounting screws holding the top panel that's above the oven controls, just behind the control panel.

Take a digital photograph or mark the wires with labeled masking tape to document how the wires connect to the oven control thermostat, so you can properly connect the new oven control thermostat.

You should have enough slack in the wires to pull the oven control thermostat out of the back of the control panel. Use a pair of needle-nose pliers to pull the female spade connectors off of the male spade leads on the existing oven control thermostat.

Remove the outer back panel of the oven.

Inside the oven, release the oven sensor bulb and sensor tube from the bracket at the back of the inside of the oven. Push the sensor bulb and tube out of the hole in the back of the oven. From behind the oven, pull the sensor bulb and tube completely out of the oven.

Remove the thermostat.

Position the new oven control thermostat in the control panel. Thread the sensor bulb from the control panel area to inside of the oven. Clip the new oven sensor bulb and tube into the mounting bracket. 

Properly connect the wires to the new oven control thermostat. 

Push the stem of the oven control thermostat through the front of the control panel. Line up the mounting screw holes, insert the mounting screws and tighten them firmly.

With someone's help, lift the oven into the cabinet. Reinstall the mounting screws on the sides of the oven cabinet that hold the oven in place.

Push the control knob onto the stem of the new oven control thermostat.

Reset the house circuit breakers for the oven to restore electrical power.