This is a modification I should have made years ago. At long last I have relegated the spanner to the drawer with it’s companions.
I have detailed how to modify the lathe tailstock to get rid of the old nut and bolt and replace it with a lever and cam – much better. This mod involves milling a pocket and drilling holes in the tailstock, so probably not something to do if the lathe is still under warranty. Of course lucky owners of the latest model WM250 already have this as standard. I have included some drawings which of are based on my lathe but could be easily adapted to other similar Chinese lathes, probably even the multitude of mini-lathes out there.
Lever Tailstock Construction Page