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Old 11 January 2014, 05:49   #1
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Mariner 30 - Cooling water

Yam-based Mariner 30.

Putting the flushing muffs on the the engine today I noticed three jets of water from the lower unit, as per the photo (engine not running). I hadn't noticed this before and, having re-fitted the lower-unit this week, wasn't sure if this was supposed to happen or water was getting into the exhaust somehow.

Is this normal?

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Old 12 January 2014, 03:18   #2
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Mine has 1 jet that comes out the front similar to yours.

Always has done but it pumps water great and seems to have no effect.

I have never been able to stop it but not tried very seriously.
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Old 12 January 2014, 04:12   #3
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I'll not worry about it then
Thanks
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Old 12 January 2014, 04:21   #4
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the only thing you could maybe do is drop the leg down and check for corrosion on both the leg and the engine where they join.
just incase.
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Old 13 January 2014, 11:25   #5
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I posted a pic of my F115 on the hose connection a few years ago; water comes out about 6 places - the hub, telltale, each water intake screen (runs out, but not with any force), and about 3 or 4 other vents/openings in various places up the leg.

jky
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Old 13 January 2014, 12:42   #6
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I replaced the impeller for someone on a second hand engine Whilst i had the water pump i bits i cleaned & poked out all the sludge / silt sand & grit from the lower leg that must have been there years ,when we restarted there was about 3 holes that let water out that didn't before .
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