I have a 1973 John Deere 210 that my grandpa bought new and I recently purchased a number 31 tiller for it. It did not come with a mule drive. My neighbor has one and he let me borrow his and I am machining/welding a new one for myself. I’m looking at my mower and I don’t see any place to hook up the hydraulic linkage. Some people were saying I need some parts to put on mine. There should be a knob on the back of the tractor next to the hitch? Mine is solid steel and there isn’t a knob. I have a snowblower that are used to blow snow in the winter and there is a spot to hook up that linkage but I’m not finding anything in the back. I have not taken the seat pan off to see what is down there but I cannot see any arm to Attach the linkage to. Am I in trouble or have I not dug deep enough into my tractor yet?