Last one, I promise
One of the oil leaks came from the area circled in red here:
View attachment 12178
There's a ~1 inch black soft rubber hose that runs from the RHS rocker cover to somewhere. Attached (previously unattached) is a tiny (4mm o.d.), probably vacuum line. Oil was leaking through the hole where the line was supposed to be.
What's the big hose for, and is the small hose indeed a vacuum line that draws oil through it, and if so to where?
Theory was that in the...