The Classic Machinery Network

Hi, could anyone help me, I have a mk1 kx61 and have looked all around it and can't find out how to grease the turntable, if had smaller diggers and they have had 4 grease nipples around it but no sign on this one.
Although it moves freely enough I feel having had it a couple of years I ought to make sure it's well lubricated.
Thanks Brian.