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Replacing Water pump - do it myself or not?

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Timothy Hanford

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I need to replace my water pump on my 1995 25 HP Merc as my motor only "pees" now and then. I've checked teh water line and it's not clogged. I found a new water pump online for around 69 bucks. I have a blown up diagram of all parts/locations of parts. I am somewhat mechanically inclined.



My question is whether I should attempt to do this repair myself or just take it to a shop so I know it is done right and would come with some sort of warranty. Any thoughts?
 

Scott S.

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Let us know how it goes if you do it. Mine is New, but I have a few outboards in the family I would like to do myself if its easy.
 

JEFF WHITE

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if its as easy as my evinrude,it shouldnt take more than 2-3 hrs.



disconnect the shift linkage,remove the lower unit bolts,pull the lower unit off,there should be a plate covering the pump,remove it and remove the impeller,replace it like the old one came out.then reverse the procedure to reinstall.
 

JEFF WHITE

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not quite sure on a mrec,but there should be a pin or a clip on the arm to disconnect it.look under the motor for a rod going down to the lower unit.
 

Timothy Hanford

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Thanks for the tips. Someone on the BFHP mentioned that teh water might not come out in a steady stream if teh water is cold or at idle. He mentioned this being controlled by the thermostat. Is this possible? Maybe nothing is wrong at all then?
 

Chris Leiting

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Remove the starter and you will see the linkage in the bottom of the cowl... it's just a clip with a rod through it holding shift linkage, its a easy task... however... 69 bucks for a water sounds a little outragious....
 

Timothy Hanford

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I found a diagram of my motor online and it does have a thermostat. I will change the impeller just as a maintenance item but I think it's ok.
 

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