Boats been set'n for 5 years so I suspect the water pump needs changed (Tweety's advice ). 175HP Mariner.. It is 125 miles to the closest mechanic in Amarillo.
SO.. just how hard is changing one out ?? AND JUST WHERE IS IT LOCATED IN THE MOTOR ???

Thanks Boy's for any info..

What year? The pump is above the lower unit you have to drop the lower unit, and disconnect the shifter depending on the year. Some can be a pain.

I've done it on OMC 85 horse and 150 horse, wasn't bad, don't know how different Mariner is...my brother has changed em out on them...

OH.. the year is a 96.