Thanks Guys – it worked a charm.
When the rope sheave was installed they had left the upright in place and I had taken it as integral to the flywheel
I used a punch to remove the knob from underneath on the parts motor as suggested and took the post off the flywheel I wanted to use the same way. The knob assembly pressed back in with hand pressure and a socket re-flared the end on the tube.
Test start tomorrow maybe 🙂
Kev