welcome, look close try to pin point where its coming from.
Right behind oilpan you have where tractor bolts front to back and then there is looks to be an access panel for servicing maybe hydraulic with two small bolts holding it in place. Leak seems to come from bolt head. I wish it owned all it has marked![]()
That cover is for your clutch inspection / throw out bearing,remove it and see if oil is coming from engine side or transmission side?
Could be rear engine oil seal or trans input seal leaking unless tractor serial # is >201,000 then it could also be pto engagement piston seals leaking. Either way tractor would have to be "split" to correct the oil leak