I just oiled mine yesterday. The label on the front (mine is mounted horizontally on my B3 1550, output up, input down, motor body to the left and the pump head to the right) has the oil ports labeled with arrows pointing up and down parallel to the left side of the label. I took the pump off, lay it down on the mounting bracket, and applied 4 or 5 drops of oil into the openings.
<> (port)
----------------------------------------------------------------------------------------------
| /\ |
| | |
| | blah blah blah |
| OIL |
| | |
| | Oil with SAE 20 (I think) |
| \/ |
----------------------------------------------------------------------------------------------
<> (port)
The ports are merely holes in the casing
It's possible I am wrong and I have been oiling something other than my ports ........
