Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Slide the spark generator out of its
catches and place in a safe location
Disconnect the electrode leads from the electrodes
Remove the two nuts from the electrodes and
withdraw the electrode assembly

Observation:

Check the rectification electrode is not warped or damaged
(the electrode should be straight as shown in the picture).
Check the ceramics are not damaged or cracked.
Note:
Per manufacturer's instructions, upon reassembly a replacement
gasket (part number J04357) for the electrode assembly is required.