How to Replace a Faulty Orifice Holder Assembly in Your Whirlpool Oven

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The orifice holder assembly in your Whirlpool gas oven model WFG505M0BW is found underneath the appliance’s cooktop. If one of the gas burners won’t light, or the gas tube connected to the orifice holder is cracked, you’ll need to replace the part. Fortunately, switching out the faulty or damaged orifice assembly for a new functional one is not difficult and should only take a short time.

As you get ready to start your repair, unplug your stove and turn the gas running to the appliance off. Keep your hands and eyes protected by wearing work gloves and safety goggles.

How to Replace the Orifice Holder Assembly in Your Whirlpool Gas Stove

  1. Pick up the cooktop burner grates and set them down somewhere safe and out of the way. Then, take all the burner caps off your appliance. Next, you’ll need to remove the burner heads. To do so, use a Phillips screwdriver to unthread the screws holding them in place. Before you pull the burner heads off the cooktop, disconnect the spark wires running to them.
  2. Shimmy a putty knife in-between the cooktop and oven frame to disengage the locking tabs securing the cooktop to the appliance. Once the cooktop is free, lift it up and rest it on the top of the stove. Then, find the grounding wire near the back of it, and unthread the screw holding it place. After you detach the grounding wire remove the cooktop from the stove.
  3. Locate the orifice holder assembly that is causing the malfunction and unthread the nut which holds it to the burner valve. Once the nut is loose, pull the orifice holder off the valve and remove the part from your appliance.
  4. Now you can install the new orifice holder. Simply, attach the orifice holder to the burner valve and secure it by tightening the nut you loosened earlier.
  5. To make threading the spark wires through the opening on the maintop easier, place the wires in the orifice holders before reassembling the cooktop.
  6. Once you’re sure the new orifice holder is secured properly, you can place the cooktop back on the stove. Before locking the cooktop in place, reattach the grounding wire. Then, slide the top back and push down on it to engage the locking tabs. Next, connect the spark wires to the burner heads, and place the heads on the cooktop, so you can rethread the screws you removed. Finally, put the burner caps back on the burner heads, and replace the cooktop grates.
  7. To finish off your repair, plug-in your stove and turn its gas supply back on.

If you replaced the orifice holder, and your stove top burner still won’t light, please contact us today, and we’ll be happy to schedule a repair appointment for you.

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