I have a zd21 with manual clutch. I circled and green the part that I'm wondering about. Apparently my PTO lever rod is sticking. I can engage it underneath the mower bye camping on that lever rod. So I presumed that I need to take it out and clean it. The machine has been sitting up for 2 or 3 years and I'm just bought it. Anyway my question is are basically a statement. I do not understand how that is a PTO lever. I do not see any way that forks or whatever would hook up to that. It looks like a smooth ride all the way through going by the diagram. Is anyone know if this has got a notch or something similar like that. Or even spine gear, but I doubt that. Thanks in advance