My fan oven fan got a bit reluctant to spin six months ago so I dismantled the cooker from the back to get the fan out (quite a job on my cooker). I took the fan apart and cleaned all the bits and then lubed it sparingly with a few drops of clean oil. After rebuilding it it ran noticeably easier and is still going ok. having said that I expect I will have to do it all again in another six months time - but hey it keeps me out of mischief!
Richard, January 2009