Good time to do this, Rowland!
I started to put the mower to bed yesterday, running the tank dry and pouring oil all over the paths in the process!
The hardened collection of grass under the mower deck took ages to clear with a paint scraper, and I finished up with a bucket-full! All I need to do now, is collapse it all, and find a space under the work bench to park it for the winter...
(What's 'space')?