1999 Mariner 25 hp water pump

imported_garyp · #1 February 25th, 2007, 11:06 PM

Is it normal for a 25 Mariner to put out water intermittently from the spray tube located at the Rt, rear of the engine. I thought it would continue to put out a small stream to let you know it is working, This one will spew then quit, going on and off quite often.Is this just the thermostat working or do I have an impeller problem?

JUSTINTIME · #2 February 25th, 2007, 11:52 PM

sounds like stick t-stat, worn impeller,or housings or maybe clogged

pull t-stat and see if water comes out fully

imported_garyp · #3 February 26th, 2007, 04:10 AM

I am asking this question for my Dad.(He has the Mariner) It has been several years since I even put my boat in the water but as I recall it stedily spewed water out this hole. Mine is a 25 Evinrude I bought new in about 1990.

imported_garyp · #4 March 1st, 2007, 12:13 AM

Where is the thermostat located? Is there a parts lookup / parts schemnatic somewhere? Thanks

JUSTINTIME · #5 March 1st, 2007, 12:16 AM

http://www.mercurypartsexpress.com/P...e/homepage.asp