Tighten the flame safety nut
Get it ready: gas off, oven upside down
Ooni's help-centre method ("How to tighten the FSD bolt for Ooni Koda 16"). Try the easy fixes in it goes out when I let go first. The manual sends other service to a qualified technician; the help centre says ask a local gas engineer if you are not comfortable.
- Turn the gas off, disconnect the regulator, and let the oven go completely cold.
- Take the stone out.
- Fold the legs and lay the oven upside down on a soft surface, such as a blanket.
- Disconnect the hose from the gas terminal (UK: loosen the hose clip; US: the 19 mm nut, anticlockwise).
- Pull the knob straight off the valve stem.
- Undo the 2 collar screws with a cross-head (Phillips) screwdriver and lift the collar off.
Open the housing and tighten the nut
The help centre.
- Undo the 11 black 6 mm screws round the housing and the 1 10 mm screw at the valve. Keep them in order.
- Lift the housing clear of the gas terminal and the valve stem.
- Find the copper tube from the thermocouple, and the brass flame safety nut where it meets the valve.
- Loosen the nut anticlockwise with an 8 mm (5/16 in) spanner.
- Re-tighten it clockwise until secure. Do not over-tighten.
Later ovens with a Control Box Panel: undo only the panel's 6 × 6 mm screws and lift the small panel off, instead of steps 1 and 2 (help centre).
Close it up and test
The help centre, with the screw order from the natural-gas kit manual.
- Refit the housing over the terminal and stem, and tighten all the screws until secure. Do not over-tighten.
- Collar: start one screw part-way, fit the collar, then start the second, and tighten both.
- Push the knob back onto the stem.
- Turn the oven over, unfold the legs and put the stone back.
- Reconnect the hose and leak test every joint you touched.
- Light it, holding the knob in for 5 seconds. If it still goes out, contact Ooni support.
Ooni's tip: if a screw just spins, a gentle extra turn until it clicks usually catches it.