Hello Weldspec

Many thanks for the resolution to your story.
I regret we paid no part in that.

The brilliant and respected Old Lawnmower club has Atco manuals ...
https://www.oldlawnmowerclub.co.uk/technical/opman/list

Your 14" 1956 model is worth recording.
I note the inboard rigger wheels, replacing the front roller.
That is less common and surely an accessory.

These were designed to enable higher grass cutting.
I wonder whether they are original fitments?

Thanks for your tolerance in posting.

---------------------------
Jack