water pump/lower unit

[Sean]

Since I bought the boat last Auguat, I have not changed the water pump. I took her out last week and she ran perfect! even wit the old plugs full of carb fogging crap.
The water preasure comming out of her isn't to strong, and I know I need to atleast change/look @ the impeller.
My question is, how big a project is it? I charge alot of things head on, and I get lucky about 80% of the time, but I dont want to roll the dice with my engine if it is going to be a bigger project/risk then I think.
Thanks for any incorregement or warnings you may have!

[macojoe]

You can do it, its a easy job!! Just make sure you get the hidden bolt out under the zinc plate and that the inpeller goes on the right way.

If you don't have a book on your motor I sugest you to go get one. It will be full of info!

[Bygracealone]

I can't remember what motor you have, but if it's OMC, then don't forget about the bolt under the bottom carb; I had a really tough time getting to that one...

[turbinedoctor]

Bolt under the carb for a water pump?? ???

[frayed_knot]

LOL, I/O on the brain. I think it's an OB BGA.

[Bygracealone]

Yeah, under the carb... In order to get to the impeller, you need to pull the lower unit off and to pull the lower unit off you need to disengage the shift rod on an OB.

Am I out to lunch again? That happens sometimes... :-/

[tsubaki]

The Mariners are a little easier to change than OMC products because (depending on the years) you don't have to loosen the linkage bolt under the carbs.
Whatever you do don't rotate the shift dog (or gear) and get it out of time. If you don't have a book get one just for tech data. Frosen bolts are always fun. Merc-Mariner has a change in '94 on the water pickup tube pay close attention to the instructions with the pump.
Holler when starting on it. ;D

[frayed_knot]

Am I out to lunch again? *That happens sometimes... :-/
Nahhh, your allright, the rest of us are out to lunch. ;D

[tsubaki]

Personally I'd buy the whole pump kit being it's the first time you've been in the foot, some improvements may have been made prior to '96. Oh, while your at it change the foot fluid. Get the pump and use Quicksilver fluid.

[tsubaki]

Look in "General" (today on page 2) and under "make my life easier" on page 2 pics of a 75hp Mariner foot. I suggest making one of these brackets.

[Bygracealone]

Nahhh, your allright, the rest of us are out to lunch. ;D


Thanks Fray :P

[Stillrunning]

With mine they have a bolt hidden under that little skeg thing. I mark its location so the skeg is pointing the same direction as when it was removed.

[Sean]

Thanks for all the tips and incorragwement!

You would think I could just order a water pump for the year/make/model of my engine.. But Noooo. If I want to get it @ westmarine I need to remove the old one 1st and them bring it in... Or to order the kist online I nee my engine serial #. So once it stops raing I am going to get the serial number off the negine and order the parts.
Stay tuned!! ;D

[macojoe]

The reason they ask for the serial number is that these motors are made in lots, not years, so if you buy a 2000 Mercury its a 2000, but if you buy it in 2001 then it is a 2001 till they sell that lot out.

At least thats how my mer was (1990) My friend had a mer just like mine and was a 1989, but serial numbers were only off by 78 numbers.

[tsubaki]

Yeah don't buy or order anything without the model #.
You will be surprised of half year changes.

[Sean]

A bet you all knew this question was comming ;D

Were is the serial # on an engine ???
I looked every were ::)

[tsubaki]

Two places depending on Mfr. Port side (left facing forward ;D) yoke, decal or stamp with rivets and on freeze plug looking thing on top of powerhead (looks like round end of carrage bolt).
I'll try to find pictures on net for your motor.
Hang on, I got a "84 150 Mariner in the yard, I'll get a picture.

[tsubaki]

Well I'm only at 50%.
http://i175.photobucket.com/albums/w159/tsubaki3/Picture080.jpg

[tsubaki]

http://i175.photobucket.com/albums/w159/tsubaki3/Picture081.jpg

[tsubaki]

I'll have to look and see if your motor also has it stamped into the thing that looks like a freeze plug. Patience ;D

[tsubaki]

By da way. How you be no u gots a "96 150 mariner? ;D

[Sean]

Alright, it looks like there use to be a Mariner Plate on the Tilt cylender, but it is not eligable.
There are 3 diffrent stickers in the engine with bar codes, the 1st one reads:
7150412ET 2/3
Nitro - MA 150L (2.0:1) 1996
could that be it?

[tsubaki]

If I'm not mistaken the number you are looking for on a "96 should read like this.
OG303046
Look for a plate or sticker with the first two letters "OG"
The last six digits are usually year and serial number.

[Sean]

Hmmm, Nope, none of the nubers I wrote down look like that ::)
I'll have to get a better look after work.
tsubaki, thanks for all of your help!

[Sean]

When I look on Iboats the give me some codes regarding Model # and so on, but I cant decode the codes to find out a around were I need to be.
Does anybody have there decoder ring handy ::)
http://www.iboats.com/Mariner_Water_Pump_Repair_Kits/dm/keywords.water%20pump%20for%20Mariner--session_id.082369586--cart_id.395169475--list_time.1179831620--view_id.269266
I figure then I will know what numbers to look for on my engine.

[tsubaki]

Those #'s are for 20-30hp motors.

[tsubaki]

This is some of the years and serial # range.
Serial number
HP beginning-ending year
150 *5129480 - 5503246 1979 V6
150 * 5503247 - 5944790 1980/1981 V6 (80/81 = samma modellår)
150 *5944791 - 6220253 1982 V6
150 *6220254 - 6443212 1983 V6
150 *6443213 - 6616990 1984 V6
150 *6616991 - A904645 1985 V6
150 *A904646 - A969903 1986 V6
150 *A969904 - B241880 1987 V6
150 *B241881 - C100860 1988 V6
150 *C100861 - C221499 1989 V6
150 *C221500 - D000749 1990 V6 2,0 L
150 *D000750 - D081999 1991 V6 2,0 L
150 *D082000 - D181999 1992 + XR6
150 *D182000 - 0D284787 1993 + XR6 och EFI
150 *0D284788 - 0G129221 1994 + XR6 och EFI
150 *0G129222 - 0G303045 1995 + XR6 och EFI
150 *0G303046 - 1996 + XR6 och EFI
1500 (150,0) *3502806 - 3752619 1973 6 cyl inline
1500 (150,0) *3752620 - 4121434 1974 6 cyl inline
1500 (150,0) *4121435 - 4319879 1975 6 cyl inline
1500 (150,0) *4319880 - 4602011 1976 6 cyl inline
1500 (150,0) *4602012 - 4868997 1977 6 cyl inline
1500 (150,0) *4868998 - 1978 6 cyl inline
1500XS (150,0) *4868648 - 1978 6 cyl inline
150 XR2 *A905191 - A969903 1986 V6
150 XR2 *A969904 - B289429 1987 V6
150 XR2 *B289430 - 1988 V6 - sold intnl only
150 XR4 *B242885 - C100860 1988 V6
150 XR4 *C100861 - C221499 1989 V6
150 XR4 *C221500 - D000749 1990 V6 2,0 L
150 XR4 *D000750 - 1991 V6 2,0 L
150 XR6 *D082000 - 1992 V6 2,0 L

[tsubaki]

Here's one of them things with the serial number that looks like a freeze plug.
http://i175.photobucket.com/albums/w159/tsubaki3/Picture084.jpg

[Bygracealone]

I don't know if this helps or not, but Bigshrimpin posted this link in the links section:

http://www.warnersdock.com/Modelyearlookup.htm

There, concerning Mariners it says, "Mercury/Mariner does not code the model year into the model number or serial number. The model year is determined by the first serial number sold during the model year. Example: Merc 115ELPTO with serial OT123456 could be 2001 and OT123457 could be 2002."

[tsubaki]

http://i175.photobucket.com/albums/w159/tsubaki3/Picture082.jpg
However this location is off an OMC

[tsubaki]

Most manufacturers have put these stamps in the powerhead because of the likelyhood of removal of the stickon barcode labels. If you have them labels most likely there is one of these serial # stamps on the powerhead.

[tsubaki]

This is off a 75hp mariner.
http://i175.photobucket.com/albums/w159/tsubaki3/Picture086.jpg
The location on it is lower rear, starboard side of powerhead.

[tsubaki]

http://i175.photobucket.com/albums/w159/tsubaki3/Picture085.jpg

[Sean]

tsubaki thanks again for all of your help!

I fond the stamp, serial # is 0G351669

The bad part is I was on the phone with iboats for 15 min, then Westmarine the same and niether of them can help me :'( they both sent me to sierra something or other that only deals with inboard engines! They said I would b=probably need to go directly to a dealer!
THis is not looking good for this weekends fishing trip! :-/

[tsubaki]

That booger should be around and not be a biotch to get. I'll look, don't expect much from me. ;D

[Sean]

You'r my hero :-*

In all seriousness Thank you very much!!
I've looked every were and can't seem to find anything solid over 90hp engine :P

[tsubaki]

Just posting this for reference
COMPLETE WATER PUMP KIT #12094 65-225 HP w/ LARGE METAL PUMP HOUSINGup one level ***124; next Mercury Mariner Force Outboard COMPLETE WATER PUMP KIT #12094 OEM: 46-43024A7

65-225 HP w/ LARGE METAL PUMP HOUSING

Price 1
SKU Name MSRP 1+ Qty.
12094 COMPLETE WATER PUMP KIT #12094 65-225 HP w/ LARGE METAL PUMP HOUSING $105.25 $84.20

[tsubaki]

http://cgi.ebay.com/ebaymotors/MERCURY-QUICKSILVER-WATER-PUMP-REPAIR-KIT_W0QQitemZ190114342703QQihZ009QQcategoryZ50439Q QcmdZViewItem

[tsubaki]

Again just looking. Not real sure these are correct
http://www.marinewholesale.com/24801/Mercury-Outboard-Water-Pumps.html
http://www.mercurypartsexpress.com/PartsExpress/HomePage/homepage.asp
This one is for 1985 and newer
Item#150-18-3319
Water Pump Repair Kit

For 150 horsepower Mercury/Mariner with Ser# A904646 & up. Complete with parts as pictured.


Your price: $64.58

[Sean]

Ya, you would think I could just type in my info, then Wala! Water Pump, but Noooo.
I am going to take of the lower Unit tomorrow, (was going to doit today but my buddy has all of my tools!!) and then see what the impellar looks like. maybe for know I will just change that out. If i had good preasure I wouldn't even be worried, but @ idle or under say 1500rpms I just have a inconsistent spitting stream ::)

[Bygracealone]

Are you sure it's not a prostate problem? :P

[tsubaki]

So far what I'm seeing there may not be a complete kit available, however the parts are except for the housing.
Sierra makes the parts for most waterpumps like Bendix makes most of the brakes for automobiles.
I'm trying to find the correct part(s) number(s) for your pump.

[Sean]

not sure, but my wife keeps making me take these litle blue pills! :o

[tsubaki]

Are you sure it's not a prostate problem? *:P


;D ;D ;D

[Sean]

Sierra, thats who Iboats and westmarine were reffering me to, but they are closed tonight.
:-/

[Sean]

and the housing isn't really something that can "go wrong" right? I mean unless it rotts out. From the looks of most of the engine I am not to worried about that.

[tsubaki]

Need a zip code

[Sean]

02840

[tsubaki]

Dealers possibly near you :-/
http://www.mercurypartsexpress.com/PartsExpress/DealerLocator/ShowDealers.asp
Well SOB I'll try again

[tsubaki]

RICKS OUTBOARD MAR
105 POPES ISLAND
NEW BEDFORD, MA *02740

*SPICERS MARINA
93 MARSH RD
NOANK, CT *06340

CAPE MARINE
140 MACARTHUR BLVD
BOURNE, MA *02532

*OAK LEAF MARINA, INC
218 FERRY ROAD
OLD SAYBROOK, CT *06475

OCEAN PERFORMANCE
280 BOSTON POST ROAD
OLD SAYBROOK, CT *06475

[tsubaki]

I'm having problems trying to get parts numbers. See if any of these guys can give some reasonable help.

[Sean]

Nice, I will call these guys tomorrow.
Thanks again!

[tsubaki]

The housing may not need replacing. I just do it on any motor that it's the first time working on it.

[tsubaki]

Sean, I am getting nowhere confirming the correct part for that motor.

[Sean]

Thanks for trying!
I got the Customer service # for mercury (though I left it @ home ::) )
I am going to try and give them a call. Like I said today I am going to remove t he lower unit and hope that everything looks brand new ;D. I just bought the boat last August and had it serviced before I picked it up, so maybe they replaced everything? ??? ;D

[Sean]

Well I talk to a guy a Sierra today, 2 minutes later I had the part # I neede, 18-3217.
Of course No one around here has it so I oredered it, and why I wait for delivery I am going to still change out the impeller in the lower unit to eas my mind for this weekend fishing..

[tsubaki]

Look at the tube adaptor to make sure it's not deformed from improper installation . The 75hp we just put a complete pump in had a damaged adaptor (this is a small pvc looking thing that is about the size of a 1/2" pvc coupling that goes from the water pump to the tube to the powerhead).

[Sean]

Well everything in the water pump looks brand new, but I replaced the impeller any ways.
Before I pulled the unit off I put it in reverse,neutral,and frwd to see how the prop spins so I have a reffrence later. In gear in would rotate in the correct direction with alitle preasure.
SO I put the engine in neutrral (thats what the book siad) and pulled it off. Everything went smoothly until I went to put it bavk on, it would go all the way up and stop about 1/2 inch from the top. After 1/2 hr of playing with everything it went up.
Put it in gear nothing prop spun freely ::)
Took it off, played with everything again about 10 min later put it on and it seemed to work.
when in neutral, the prop spins freely. But when in gear it is alott firmer then before in the correct rotation and is the same in the wrong rotaion.
I am going to go hook the hose up to her now and see what happens when I put it in gear.

[Sean]

Went in/out of frwd/rev alright so I think I should be allset.
The only thing that was wierd was, I did not put the electrolis plate back on yet and when I turned off the water it alott of water poored out of that hole. should the lower unit be filling with water?
It also started spitting water right away, no warm up time that is normal with merc/mariner.

[tsubaki]

In all honesty, you'll not be able to determine if you've gotten the dog out of time until you put it in the water and run it. Sounds like you done a reasonable job. I'll say good job if you don't have to adjust it out on the control cables or redo the dog sequense. Oh and if it pumps water the way you want, that adds points. ;D

[tsubaki]

Went in/out of frwd/rev alright so I think I should be allset.
The only thing that was wierd was, I did not put the electrolis plate back on yet and when I turned off the water it alott of water poored out of that hole. should the lower unit be filling with water?
It also started spitting water right away, no warm up time that is normal with merc/mariner.
Fine, good, finish it. :)

[tsubaki]

Ain't it great.

[Sean]

Umm, WHos Dog? I really have no idea of what you are talking about, sorry.
If it is out of time, is that a easy fix that I can do on the water?

[tsubaki]

The first meantion is on the first page and my first post. I'll try to get pictures of the location of the shifter (dog).

[Sean]

Oh, OK. Does it require the lower unit to come back off :-X
Its the litle gear thing that goes in the back of the lower unit?
ALL I want todo is fish ;D

[tsubaki]

Nope done erased the photo's.
Remember the splined looking thing toward the front of the foot that is about 5/16 across? It was in the middle but to the front. This is the shift lever mechanism. If you rotated it or moved the control shifter and then assembled the foot to the motor it will be out of time as so far as when you put it in forward,neutral or reverse. Depending on what manufacturer of motor you are working on you may need to remove and install the foot in full reverse or neutral or full forward or one I had you were required to do a combination.
If it goes in and out of gear you did it right.

[Sean]

THanks, I don't think I moved it. It was kind of loose and we had to "fish" it into place why putting the unit on.
I am super stressed know about the hole thing, but in the big picutre it was/is kinda fun doing it/and learning.
I owe you!
OK 1 more thing, is the lower boot suppused to fill up with water?

[tsubaki]

Oh, by the way. Did you reassemble the foot useing antiseize?

[tsubaki]

As far as filling with water it depends on mfr. An old 70hp evinrude I have won't pump good water until I dam off the lower ports. I'm not sure about your motor.

[tsubaki]

If you didn't use antiseize, BAD DOG NO BISCUIT!
From now until you die whenever you work on a boat, use antiseize.
http://i175.photobucket.com/albums/w159/tsubaki3/Picture089.jpg
Put it on all bolt and nut threads and even on the stems of bolts, especially the zinc plate bolts.

[Sean]

oow ant sieze,
No, but i will.
thanks!

[tsubaki]

This is the 1/2" coupling looking thing that goes to the tube in the powerhead.
http://i175.photobucket.com/albums/w159/tsubaki3/Picture095.jpg
http://i175.photobucket.com/albums/w159/tsubaki3/Picture096.jpg
By the way it's top and bottom.

[tsubaki]

And this is what it looks like damaged from improper alignment.
http://i175.photobucket.com/albums/w159/tsubaki3/Picture094.jpg
http://i175.photobucket.com/albums/w159/tsubaki3/Picture097.jpg
Again top and bottom.

[Sean]

Great, just when I convinced myself that I should be all set, you go and show me something else I probaply ruined ;D Thanks
No, I assume it went in OK :-/
I'm just going to go for it tommorw, hope everything is fine.
I also got a guy comming by next Wednesday to just to a quick once over of everything and I will hopefully have my waterpump in by then and have him to it with me there.
thanks!

[tsubaki]

;D ;D ;D ;D ;D ;D ;D ;D
Anytime.
;D ;D ;D ;D ;D ;D ;D ;D
I'm so glad that we don't live in the Roman times. I think they were the ones to kill the bearer of bad news. ;D

[Sean]

LOL ;D
Keep your fingers crossed for me, the boat is loaded up and ready to fish tomorrow AM.

[tsubaki]

Chances are your going to be too busy dodgeing other boats this weekend to effectively fish. Man I wouldn't want to be a dolphin or manatee this weekend.

[Sean]

Well everything in my lower unit went perfect today ;D
But I did run into other problems... ::)

[tsubaki]

Noooooooooooo ;D