I have newly discovered that a right click on the photo and then use open link in new tab opens up the image better which can then be enlarged further.
It is largely a Merry Tiller that has had a green repaint and lost its belt cover, drive box input pulley, engine pulley and the vital belt guide. It has an improvised transport wheel set from a n other tiller or home-bru.?
The engine pulley fitted looks to be camshaft drive so won’t be any use for this application.!!
I wonder if the engine is ex a cement mixer ? as I think some used a cam shaft drive and the long exhaust may also match a former boxed in application.?
C.