I've finally got around to updating this thread, and this post should bring it up to date.
We fitted up the steering bars and pulled the engine over, however it wasn't getting any fuel through. We ended up pulling all of the steering and bonnet off again took most of the fuel system apart, cleaned it all out and reassembled the engine. There was no obvious blockages, however when we pulled the engine over again it pulled fuel through nicely. We then gave it a proper pull, and it went. The Landmaster now runs pretty nicely, it's quite loud, and the swapped pulley makes it scary to drive in 2nd gear but it is entirely functional now. Heres a link to one of my latest videos where we got the Landmaster running:
We have had the tractor out since this video and it produced a plume of smoke, which smelt heavily of burning rubber so I think one of our new belts slipped a bit, so we need to look into that again. We are also looking into getting the correct size pulley to make the machine nicer to use, it is too quick for grass cutting at the moment.
Heres a couple more pictures of the tractor in its current state:
Thanks for reading,
Joseph