40hp Mariner Impeller And Serial Number Question

fisherman 1

Recruit
Joined
May 25, 2009
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I just acquired a fishing boat with a 40hp Mariner engine. No water is coming out for cooling. From what I have been reading, it sounds like I need a new impeller. Is this correct? How hard is it to replace? The serial number is: OC225579(US made). What year is this engine? Thanks!
 
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