Went riding two days ago and came home to low coolant level. Poured coolant while bike was on stand (I have not started it at all since that ride), and this is what I get. It seems to be leaking right from the bottom corner of that fitting.
Is there something in there that wears out and I need to replace? Or is it a matter of tightening that allen bolt down some more. Although I can't imagine that it's just metal on metal there.