Hi
Saturday morning I had a fiddle before setting off. I found where I think it belongs under a cooler matrix and pressed it back onto the tube.
But it diddn't click or lock, so I assume it is only just held on by the O ring friction.
I did notoce on someone else's photo that there should be a retaining clip onto the side of the engine, but it is not there. The folk who changed the engine must hane missed that clip off. When I get time I'll take the undertray off and secure it properly, meanwhile I'll keep and eys on it.