HELP: Vitanola phonograph tonearm and reproducer

[apruizii]

Does anyone have a Vitanola phonograph with the tone arm and reproducer shown in the attached photos and know how to turn the reproducer to the right so that it is angled in the correct position to play a record? I see something that looks like a pin inside the neck..should that be pushed in to turn the reproducer clockwise? And does anyone know how to remove the reproducer from the tone arm? That pin seems to keep it from pulling the reproducer out.

I would appreciate any help...

I've attached some photos.

Thanks,

AR