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#11120906 - 09/22/15 07:54 PM 2004 yamaha vmax
Ole Yeller Offline
Outdoorsman

Registered: 02/24/13
Posts: 122
Loc: Terrell,TX
Does anyone have any idea or insight on how to change water pump on this model unit? Is there any tips or tricks etc.? Thx

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#11120917 - 09/22/15 07:57 PM Re: 2004 yamaha vmax [Re: Ole Yeller]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10537
Loc: Littlefield Tx & Lake A. H. US...
You tube
_________________________
“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” GOD IS GOOD

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#11121444 - 09/22/15 10:36 PM Re: 2004 yamaha vmax [Re: Ole Yeller]
03svtsnakevert Offline
Extreme Angler

Registered: 04/05/12
Posts: 2453
Loc: Copperas Cove, TX
Pretty straight forward...just order the water pump rebuild kit from boats.net and remove prop...the 9 bolts that hold the lower unit on (it's either 8 or 9) then get the lower unit somewhere you can work on it...remove the 4 bolts from the water pump housing and lift off the housing...your looking at the impeller now...tap up the compression ring and cover and remove from the shaft...now you can work the impeller up the shaft...afterwards remove the keyway from the shaft and lift off the wear plate...after that it's just reverse order

Put new wear plate on...tap in new keyway into shaft...slide new impeller down all the way to wear plate...replace insert in water pump housing along with new orings...when u get ready to put the water pump housing back on start it down the shaft and when you get to the impeller turn the shaft clockwise and push down on the housing and it will slide over the impeller and then bolt everything back up

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#11121483 - 09/22/15 10:58 PM Re: 2004 yamaha vmax [Re: Ole Yeller]
CADD Offline
Outdoorsman

Registered: 08/02/03
Posts: 175
Loc: Spring Branch, TX USA
It's not to hard, just take your time and google search for picture and video gobys I purchase from SimYamaha and get his deluxe kits such as this one http://www.simyamaha.com/Yamaha_Water_Pump_Repair_Kit_p/61a-w0078-a3-00dxrbkit.htm don't really need all the new parts.. but it make me feel good smile
_________________________
2001 Pathfinder 2200V 150Vmax HDPI
2015 Diablo Amigo (Sand Fleck)

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#11121675 - 09/23/15 06:24 AM Re: 2004 yamaha vmax [Re: CADD]
03svtsnakevert Offline
Extreme Angler

Registered: 04/05/12
Posts: 2453
Loc: Copperas Cove, TX
Originally Posted By: CADD
It's not to hard, just take your time and google search for picture and video gobys I purchase from SimYamaha and get his deluxe kits such as this one http://www.simyamaha.com/Yamaha_Water_Pump_Repair_Kit_p/61a-w0078-a3-00dxrbkit.htm don't really need all the new parts.. but it make me feel good smile


The kit is cheaper at boats.net

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#11124146 - 09/24/15 06:59 AM Re: 2004 yamaha vmax [Re: Ole Yeller]
bigtexnick Offline
TFF Celebrity

Registered: 08/27/08
Posts: 7618
Loc: Texas
I have the same model engine and did mine earlier this year. Fairly easy job, watch a few YouTube videos for guidance. The only tricky thing on mine was a tight metal band that was difficult to slide up and remove from the pole; it did not unscrew and had to be removed after the impeller but before removal of the housing. Feel free to PM me with questions.


Edited by bigtexnick (09/24/15 07:00 AM)
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--Nick smirk

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#11124188 - 09/24/15 07:23 AM Re: 2004 yamaha vmax [Re: bigtexnick]
03svtsnakevert Offline
Extreme Angler

Registered: 04/05/12
Posts: 2453
Loc: Copperas Cove, TX
Originally Posted By: bigtexnick
I have the same model engine and did mine earlier this year. Fairly easy job, watch a few YouTube videos for guidance. The only tricky thing on mine was a tight metal band that was difficult to slide up and remove from the pole; it did not unscrew and had to be removed after the impeller but before removal of the housing. Feel free to PM me with questions.


That metal band is a retainer that has to be removed prior to removing the impeller...just use a small pry bar and work around it until it comes loose

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#11124470 - 09/24/15 09:24 AM Re: 2004 yamaha vmax [Re: Ole Yeller]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10537
Loc: Littlefield Tx & Lake A. H. US...
Remove the water pump housing, remove the seal ring by tapping it up an off of the plastic retainer with a screwdriver-hammer, remover the plastic ring by spreading open and sliding up the main shaft, then the impeller can be removed. I have found it is best to use soap when re-installing. I get better water pressure.
_________________________
“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” GOD IS GOOD

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#11133943 - 09/28/15 08:52 PM Re: 2004 yamaha vmax [Re: Ole Yeller]
Ole Yeller Offline
Outdoorsman

Registered: 02/24/13
Posts: 122
Loc: Terrell,TX
Thanks Agin Guys! How often do y'all suggest it be changed?

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#11134288 - 09/29/15 04:43 AM Re: 2004 yamaha vmax [Re: Ole Yeller]
Kevin R. Offline
Pro Angler

Registered: 03/22/13
Posts: 746
Loc: Crossroads Texas
Its a pretty straight forward job. One thing I will add is stock Yamaha impellers are marked up and rotation. Most shops say every year, I do mine every 3, but I don't fish every weekend, maybe 1 to 2 times a month average.


Edited by Kevin R. (10/01/15 04:45 AM)

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#11136143 - 09/29/15 10:11 PM Re: 2004 yamaha vmax [Re: Ole Yeller]
JoeFriday Offline
Pro Angler

Registered: 05/23/13
Posts: 736
Loc: Flower Mound, TX
Originally Posted By: Ole Yeller
Thanks Agin Guys! How often do y'all suggest it be changed?


Every other year.
_________________________
This space for rent

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#11152862 - 10/08/15 05:53 PM Re: 2004 yamaha vmax [Re: Ole Yeller]
bigtexnick Offline
TFF Celebrity

Registered: 08/27/08
Posts: 7618
Loc: Texas
Originally Posted By: Ole Yeller
Thanks Agin Guys! How often do y'all suggest it be changed?

That's a good question. I would say every year, to be on the safe side.

However, I had my boat for almost three years ---- with regular use, say, at least once every three weeks on average ---- and when I went to change my impeller, the old one was near perfect. So they can definitely last almost three years, if that gives any perspective on the matter.
_________________________
--Nick smirk

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#11153615 - 10/09/15 07:56 AM Re: 2004 yamaha vmax [Re: Ole Yeller]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10537
Loc: Littlefield Tx & Lake A. H. US...
Best to have a working water pressure gauge and change the water pump when you have lower pressure. I have under low water conditions changed impellers more often.
_________________________
“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” GOD IS GOOD

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