How to tighten the FSD bolt for Ooni 3 Gas BurnerUpdated 7 months ago
###
**If you experience the flame cutting out with your Ooni 3 Gas Burner, it 's
important to carefully follow the outlined steps in this article**** (**[**The
flame in my Ooni Gas Burner is cutting
out**](https://support.ooni.com/en_us/the-flame-in-my-ooni-gas-burner-is-
cutting-out.-what-should-i-do-SkfznCuMi)) **before proceeding with the
following instructions.**
###
**Your oven 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:**
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* #### Switch off the Ooni 3 Gas Burner and disconnect from any gas source
* #### Ensure that the Ooni 3 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
### **⚠ 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 3 gas burner
upside-down on a soft surface.
**Step 2 - 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 3 - Tighten the bolt.** To secure a connection, use your hand to
tighten the bolt as much as you can. Then use a 8mm (5/16") spanner or
adjustable wrench to tighten it a quarter turn more:
**Step 4 - Tighten the washer**. To keep the bolt in place, use your hand to
tighten the washer as much as you can. Then use a 10mm spanner or adjustable
wrench to tighten it a quarter turn more:
**Ste****p 5 -**** ****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 Gas Burner is
cutting out.](https://support.ooni.com/en_us/the-flame-in-my-ooni-gas-burner-
is-cutting-out.-what-should-i-do-SkfznCuMi)