Chainsaw Repair

I have a ~25 year old Craftsman chainsaw that I’m quite certain was made by Poulan.  It’s a 2.0 cubic inch model.  The oiler wasn’t working so I took the oil pump out but neglected to note the orientation of the pump.  It turns out there was no oil discharge line connecting the pump outlet to the oiler hole.  I replaced the oil line and now need to reinstall the pump.  There are two possible orientations for the pump: one where two cutaway sections face up, and one where they face down.  Which is correct?  I would assume with the cutaway facing down the pump could draw oil from lower in the tank.  But maybe there’s a reason to mount the pump the other way?  BTW, this is a pressure operated pump, not a mechanically operated pump. 

Hope this helps.

You talking about the 2 square holes in the plastic with the sponge filter in it? 1 is facing you in 3rd pic.  Looks to be toward the bolt hole toward you in pic.