How to tighten the FSD bolt for Ooni Karu 16 Gas Burner

May 21 2024 10:59am • Est. Read Time: 2 MIN


If you experience the flame cutting out with your Ooni Karu 16 Gas Burner, it's important to carefully follow the outlined steps in this article (The flame in my Ooni Karu 16 Gas Burner is cutting out) before proceeding with the following instructions.

Your gas burner has a built-in safety feature known as an FSD (Flame Supervision Device). This mechanism automatically shuts off the gas supply if the thermocouple fails to register a sufficiently high temperature.  

Over time, the FSD bolt connecting to the thermocouple might gradually loosen. This loosening can potentially cause your flames to unexpectedly cut out. Regularly checking and tightening the FSD bolt can help ensure the consistent and safe operation of your oven.


 ⚠ BEFORE YOU BEGIN:

  • Switch off the Ooni Karu 16 Gas Burner and disconnect from any gas source

  • Ensure that the Ooni Karu 16 Gas Burner is completely cool

  • Work on a clear surface in a low-dust workspace

  • Gather tools required

    • 8mm (5/16") spanner or adjustable wrench

    • 10mm (5/32") spanner or adjustable wrench

    • Allan key supplied with the gas burner

⚠ WARNING:

  • Failure to follow all instructions could result in serious injury and/or property damage.

  • Some parts may contain sharp edges. Wear protective gloves if necessary

  • If you smell gas:

    • Shut off the gas supply

    • Extinguish any open flame

    • If the smell persists, keep a safe distance and contact your local fire department

  • Read and follow all safety instructions, assembly instructions and care instructions before attempting to assemble and cook.  


Step 1 - Position the gas burner. Gently lay your Ooni Karu 16 gas burner upside-down on a soft surface to prevent any scratches or damage to your worktop.

Step 2 - Remove the panel. Unscrew the 4 bolts using the torx allen key and gently remove the panel to the side. Take care when removing the panel to ensure you do not overstretch the sparker wire.

Note:  If the cover is difficult to remove, loosen the bolts on either side of the burner. After replacing the cover, re-tighten the bolts.
Step 3 - Loosen the washer. Using a 10mm (5/32") spanner or adjustable wrench, loosen the washer. This will make tightening the FSD bolt so much easier.



Step 4 - Tighten the FSD bolt. To secure a connection, use your hand to tighten the bolt as much as you can in a clockwise position. Then use an 8mm (5/16") spanner or adjustable wrench to tighten it a quarter turn more. Do not over-tighten.


Step 5 - Tighten the washer. To keep the FSD bolt in place, use your hand to tighten the washer as much as you can. Then use a 10mm (5/32") spanner or adjustable wrench to tighten it a quarter turn more. Do not over-tighten.


Step 6 - Replace the panel. Use all the bolts to secure the panel back onto the gas burner.
Step 7 - Fire up. Insert the gas burner into the oven, check your setup is correct, attach the regulator to the gas tank and ignite.

If the above advice hasn't worked, we can still help, please resume the next steps in the main troubleshooting article: The flame in my Ooni Karu 16 Gas Burner is cutting out.

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