Sorry, didn't mean to imply that was a Magnum connector.  You ar correct, that is from my 30+ year old 966.  With the aftermarket lever on the back to kick the plugs out it works every time.

I need to look closely at our 7120 and 7210 and see if there is a zerk hidden on the hydraulic connector, because I sure don't recall seeing one anyplace.

The 9270 uses a different style, and it works well once you figure it out.  NEVER pull the hose out.  Push it in, then hold the hose on the back to hold the connector in place and THEN take the hose out

BUT THEY ALL BEAT THE ^**!! JOHN DEERE HYD CONNECTORS ON THE 8640