oil pump

I just got a new oil pump from Midwest Bayless for my '81 X, and as instructed I swapped the foot of the old pump onto the new one. Trying to use all "new" parts that I could, I put the spring from the new pump in, but was forced to use the old bypass pin that the spring pushes against as the...

I am rebuilding my engine slowly but surely and cannot recall exactly how it all came apart when some of my found pictures do not contain the needed details. What is the oil drain pipe? And where near the main bearing No.5 does it go? As referred to in the Haynes manual: Chapter 1: section...