The Marine Doctor - Water Pump Replacement video

YaBB Administrator YaBB Administrator Offline I love YaBB! Posts: 1 The Land of YaBB	Water Pump Replacement video 10/14/07 at 18:40:49 www.themarinedoctor.com/waterpump.wmv File some how disappeared...but here it is again. TMD
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FisherMike Honorable Members Offline One that didn't get away. Posts: 160 x1\|Muskegon Mi\|USA\| Gender:	Re: Water Pump Replacement video Reply #1 - 10/15/07 at 00:16:16 Thanks Doc. U da man.
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proptwist Junior Member Offline I Love YaBB 2! Posts: 60	Re: Water Pump Replacement video Reply #2 - 05/08/08 at 01:48:07 Great video Doc! On the bottom of the Johnson plastic water pump housings there's a groove and a small rubber spaghetti gasket that goes in there to complete the seal. Keeping this in place during installation has by far been the hardest part of the process for me. Any experience, thoughts, or suggestions? Thanks!
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The Marine Doctor

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Re: Water Pump Replacement video
Reply #3 - 05/08/08 at 03:35:52

Yup.

Prior to installing the Oring on the bottom.

Slide the impeller down the shaft and key it into position.

Place the cup inside the housing.

Slide the housing with cup installed down onto the impeller....and install the impeller into the housing.

Lift the housing OFF...and attempt to keep the cup down on the impeller.

Remove the housing only and install the Oring.
Slide it back down over top the cup.

TMD

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eny TMD's New People Offline I Love YaBB 2! Posts: 1	Re: Water Pump Replacement video Reply #4 - 08/21/08 at 03:47:49 I CANNOT GET THE BOTTOM PART OF THE LEG TO COME OFF TO GET AT THE WATER PUMP? DO YOU HAVE ANY IDEAS ON WHY IT WILL NOT SPLIT APART? MOTOR IS 1974 4 HP MERCURY ERNIE
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The Marine Doctor

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Re: Water Pump Replacement video
Reply #5 - 08/21/08 at 04:47:42

2 nuts retain it....front and just above the prop.

Here is what may work, its how I do it.

Spin the front one down a small amount and pry against it.
Once it moves down a little, you should be able to pry along where the case meets the leg.

Sometimes it gets hung up on the water intake screen above the prop.

If it fails to come apart, it may be that one or both of the shafts are corroded in place.

TMD

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BoatNoob

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I live in Middleton Idaho...
WHERE!?
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Re: Water Pump Replacement video
Reply #6 - 04/13/09 at 00:26:11

Thank you for these videos, for some of the simpler things like water pumps and oil changes I could see doing this myself to save costs.

Question: Starting the water pump replacement with all other parts removed as the video shows looks relatively simple, but the question is how do you remove everything to get to that part? In addition and probably more important how do you put it back together?

If there is any way to show this it would be greatly appreciated. Of course if I consult the manual I may be able to figure it out myself, but where did I put that thing? Hmm... Undecided

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The Marine Doctor YaBB Administrator Offline Posts: 21453 x1\|Sask\|Canada\| Gender:	Re: Water Pump Replacement video Reply #7 - 04/13/09 at 00:50:23 http://www.themarinedoctor.com/cgi-bin/YaBB.pl?num=1209252124 Try that. TMD
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BoatNoob Honorable Members Offline I live in Middleton Idaho... WHERE!? Posts: 28 Middleton, Idaho	Re: Water Pump Replacement video Reply #8 - 04/13/09 at 19:39:14 Thank you for the quick response! I'll have to try to give that a whirl with a Evinrude... We'll see how it goes I hope you had a great Easter! Cheers!
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ffes3348 TMD's New People Offline TMD's gets you back on the water Posts: 2	Re: Water Pump Replacement video Reply #9 - 05/10/10 at 22:20:59 How many bolts need to be removed to drop the lower unit on a 150 Mercury?
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The Marine Doctor YaBB Administrator Offline Posts: 21453 x1\|Sask\|Canada\| Gender:	Re: Water Pump Replacement video Reply #10 - 05/11/10 at 00:36:56 I believe its 7 TMD
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Bobb-o Site Supporter Offline TMD's gets you back on the water Posts: 109	Re: Water Pump Replacement video Reply #11 - 06/10/10 at 21:49:06 Dawn dishwashing detergent works great to get the impeller in the cup. Just squirt alittle in the cup & let it roll around the insides before pushing down on the impeller.
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The Marine Doctor YaBB Administrator Offline Posts: 21453 x1\|Sask\|Canada\| Gender:	Re: Water Pump Replacement video Reply #12 - 06/10/10 at 23:31:16 TMD
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whalerboy

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Re: Water Pump Replacement video
Reply #13 - 08/18/10 at 15:39:14

I have a 2003 Johnson 150hp that seems to be spitting diminished volumes of water out the tell tail. it only does this when under way in the water. When using the muffs to flush the engine it spits water like a champ. I assume it is a problem with the impeller and not a blockage. I need to know what is the reality of doing this myself? I don't have a shop but i feel confident with the job and the tools i have. I also was wondering what the proper parts are for this job.
Any feedback would be greatly appreciated.

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