jdw1, your engine, same as mine, has a different crankcase breather setup. It vents to the atmosphere via a ˝” hard plastic tube that ends by the lower part of block, between the block and starter, out of view. Sometimes a drop of oil, or oil fumes, will exit tube, keep the side of the block and the starter nasty.
There is a tiny filter inside the Enviroguard replaceable housing that doesn’t do much. It can be removed and cleaned with parts cleaner.
In the last picture, the big rubber hose coming out of the breather replaced the original ˝” plastic tube. That rubber hose goes to a Jaz catch can, to keep my engine clean.