Yes, thank you Ghh. It is a very good site but on this occasion no drawing showed any detail of how housing is fitted. I suspect you are right and that there is a securing nut underneath, just means there is a bit more work to do accessing it! Not used this site before and wasn't sure how to thank anybody so I hope this works! (Previously I put the wrong model number for the cooker so repeated my query). Regards, Steve
Steve, February 2024