How to Replace the Thermostat on a Vulcan 936 Gas Grill

Turn off all electrical power to the grill and shut off the gas supply.

Lock and tag the machine's potential power supply prior to working on the machine. Lockout/tagout procedures are a standard industrial protocol to ensure that a potentially dangerous device cannot become operational during a maintenance procedure. As the term implies, this requires a mechanic or operator to place a lock on the power source as well as a tag that indicates the lock should not be removed.

Remove the front panel and disconnect the gas line.

Remove the screws that are holding the thermostat mounting bracket in place against the frame. Be sure to put the screws in a safe place for re-use.

Locate the capillary tube under the grill plate and pull it out.

Remove the fittings from the old thermostat and transfer them to the new thermostat, using thread sealant when screwing them onto the new thermostat. Transfer the new thermostat to the old mounting bracket as well.

Remove the insulator sleeve from the old capillary tube and place it on the new thermostat. You must secure the insulator sleeve to the thick end of the capillary tube using metal tape.

Replace the capillary tube into its slot below the griddle plate.

Insert the orifice into the burner and replace the mounting bracket back onto the frame by screwing it back in place using the original screws.

Check between the orifice and burner to ensure that the inlet to the burner is straight. The gap between the orifice and burner should be no more than a sixteenth of an inch. Adjust the thread if necessary to close the gap.