Hi
KenThat's a post war Ransomes 16" or 20".
My best guess - this is a 16" Mark 13.
That's a
Sturmey Archer engine.
Note the separate oil tank on the handle.
This was a 4-stroke with dry sump lubrication.
I hope it is saved.
Page 16 in the catalogue here:-
https://www.outdoorking-forum.com.au/forum/u.../ransomes-catalogue-c1954.html#Post87758------------------------------
Jack