Oil pump repair Mercury pro xs 250 2012

First thing. Thank you in advance for information that is correct ( no I heard it from a friend that heard it from a friend that drove by a bass boat one time)
I have a 2012 250 pro xs. I removed one of the black rubber lines ( shown in pic).
My question is. Do I have to have the pump primed after removing this hose?
I have seen posts on BBC concerning replacement of pump O rings and needing to then have pump primed.
But did not know if re- prime is necessary if only 1 hose had been disconnected?
Thanks again

First off that's the oil pump your referencing. I would recommend priming the pump after disconnecting a hose.

You can prime the pump using the "shift switch activation procedure", but by doing this, the outboard resets to break-in mode, which means you will be using a bit extra oil for a few hours. Make sure your oil reservoirs are both full, and you have a fully charged battery. With the kill switch in the ON position, turn the key to ON position(do not crank engine). Move the shift lever from neutral to fwd 5 times. This must be done within 5 seconds of turning the key to ON.

Sorry I knew it was oil pump. Miss spoke. I have now taken it apart seeing that an O ring can cause the leak ( BBC and YouTube).
I do not see a o ring this far. I am guessing further disassemble require ? And if yes, what else comes apart to find o ring?

Ty tbird. Good info. I am trying to fix oil leak on the pump itself. Below find posted pics and info

This should give you all the info you need to do the job. Since you opened up the pump, I suggest you have a reputable dealer bleed the pump and oil system. You'll need to look on line and find a seal kit.

http://www.bbcboards.net/showthread.php?t=700203&page=3

If you have problems finding a seal kit call this guy. Looks like they put their own seal kit together.

Got it this far. Now what? No o ring yet. Not sure how to get that plate off? You can tell it is wampus jawed in there.

Thanks I have watched all videos I can find. They say in that video. " We do not sell kits"

Thanks bird. I have those pics. Can't figure out how to get that last plate loose. O ring is under it

Got it!!!