I am changing the gaskets and oil seals in a B&S 100900 engine. I pulled the oil sump (bottom crankcase) off the engine and a small plastic piece fell out. It is hollow and cylindrical and almost resembles a plastic thimble. It is yellowish in color, about 3/4" tall, and has a tiny hole at the top. I don't know where it goes when I reassemble the engine. Do you?
I'm going to try to post a picture, soon.
I'm going to try to post a picture, soon.