1975 Mercury 500 50 hp water pump

Alamomadman

Recruit
Joined
Jul 12, 2009
Messages
1
I have put the clamp and water hose to the motor. Where is the water susposed to return out so I can tell if the water pump is working
 

corm

Lieutenant Junior Grade
Joined
May 12, 2000
Messages
1,241
Re: 1975 Mercury 500 50 hp water pump

Hi,

It will come out of the tell tale, idle relief holes and the prop.
Running the engine on the hose will not guarantee that the pump works.
The hose pressure is greater than the pump pressure in most cases.
A barrel or garbage can is best check the pump out with.
 
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