Gooday All
Rodeobob - it has a square drive.
Have not dis-assembled it yet. Playing it safe with dodgy looking metal.
The 4 bolts that hold the shaft to the gearbox are identical with the Masport.
Will inspect it some more and come back later. I am chasing a Landmaster Tiller to see if it is similar as well. I reckon the "under" blades have been put on later - and they are flat. The other blades are more "lawnmowerish". (This is a technical term I think - lol)
Stationary.