noob impeller question 1989 merc150hp xr4

I have a 1989 mercury 150 xr4 that is running fine but has little or no water comming from the "pee hole", I understand that this is indication of needing to replace the impeller.

I have bought the replacement kit and service manual but from what I have read in there it seems like a lot more work than what I have seen in posts here.

So my question what do I have to do to replace the impeller? Do I have to drain the lower unit and all that? I'm not planning on doing any work to it, but this manual seems to want to pull the prop and a number of other things I really don't see as required.

Is it truly diffucult, or can you just drop the lower unit? If that is the case what do I need to look out for when replacing the unit? It is my first one and I am mechanically inclined, but I don't want to get in over my head. All help will be greatly appreciated!!!! Thanks in advance.

Re: noob impeller question 1989 merc150hp xr4

It's not neccisary to drain the unit and remove the prop. This is why never buy a manual other than OEM

Re: noob impeller question 1989 merc150hp xr4

The directions that the Seloc and such after market manuals give is for complete over haul.

Re: noob impeller question 1989 merc150hp xr4

http://www.in-depthangling.com/foru...91911/page/0/view/collapsed/sb/5/o/93/fpart/1

Take look at this url, good info and better instructions, it is all about a picture is worth a 1k words.
If you haven't changed the oil in the lower unit in a while, it is a good idea and really cheap as those seals do fail and allow water intrusion. The last time mine was done on my 89 Merc 200 hp, it had a bad seal and had to be changed. Sometimes you have to have it pressure tested to find where the water came from.

Re: noob impeller question 1989 merc150hp xr4

Hey thanks for the link. She is peein as much as I do now. I had a few minor issues with splines and the shift linkage that made it harder than it should have been; but, other than that twas simple stuff. The link really was helpful, let me know what I should expect and was really close. Thanks for the help!!!