Was a three man job dragged two of my housemates out of bed
. One to push the clutch lever arm hard towards the right side. One to pull the cable because the spring wasn't taught enough and one to to screw on to stop slipping. Beautiful. I tightened the flower nut just right till I could hear the piston go "floomp floomp floomp" when engine engaged and the small cog moving; and when disengaged the small cog stopped spinning the clutch cover was pushed out and no more piston sound or difficult to wheel. Time to put spark plug in at last and test out