A very few of the really early ZD18/21's had nongreaseable spindles. Some of them had the fittings off to the side of the pulley, kind of poking up through the deck shell-and many times they're buried under dirt and clippings. On those, normally there's a cutout in the deck belt shield for access. Others had them in the center of the spindle shaft-right in the middle of the pulley, dead center. Seen more than a slew of them with broken off fittings, then dirt gets around it and packed down good, and they look like they don't have a grease fitting-they almost look flat. I've trained my old eyes to look a little closer at them now.