The link does go to a manual and its pretty close to the GH 1224 but not exact
David don't waste your money at warco on the book it's next to useless I bought a new GH1224 a couple of years ago from them, the lathe its self is fine but forget about any descent documentation
I have made a couple of changes to mine to make it a little more usable like removing some of the casting on the tail stock so that the top slide doesn't hit it when working on supported work
Also added a set of "T" slots on the top slide so I can mount extra fixtures
1 problem I do have is because the Chinese can't measure I have to use 12mm tool bits and not the 16mm as the tool post has been machined to take 15mm??
this will be remedied by fitting a quick change tool post so I can set the correct height
Enjoy