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  1. M

    water pressure gauge

    does anyone have any info on how to add a water pressure gauge to a 15 hp mariner, I have no idea but would like to know if the motor is gettin cooled.
  2. M

    15hp mariner cooling

    I bought a used 15hp mariner used (late 1980's maybe early 1990"s) and have some questions on cooling. I plan on using this motor on my duck boat which will put it through some muck. so here goes<br />1. do these have thermostats on them?<br />2. can I put a tempurature sensor on this motor...
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