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Old 16-10-2015, 07:11   #1
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Location: Groton, CT
Boat: Bristol 29.9
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First time winterizing - a few questions

This is our first boat with an inboard engine (Yanmar SB12) and we're planning to winterize tomorrow. I just have a few questions:

The Yanmar is raw-water cooled. Can we simply remove the raw water intake hose from the seacock and stick the end of the hose in a 5-gallon bucket to flush it with fresh water and then antifreeze, or is there a special adaptor required?

We are also going to be removing our pressure water system tomorrow. Once it's gone and no water is coming out through the foot pumps (because the water tanks are empty), do we still need to pump anti-freeze through the water lines, or is that something that's only done with pressure water systems?

I know that we're also supposed to change the oil (including the transmission oil), top off the fuel tank, and put biocide in the tank. Anything else I'm missing?

Thanks.
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Old 16-10-2015, 07:28   #2
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Re: First time winterizing - a few questions

I'm going to say yes to both your questions. Should be able to drop your suction hose into a gallon bucket and suck.

Its also a good idea to run some non toxic antifreeze through your fw system.

I also put some anti freeze through my pumped out black water system.

You may have some drain plugs you want to remove from cooling water and exhaust system as well.

It might be a good idea to remove your batteries, take them home to your basement, put them on ply wood and put them on trickle chargers.

Any LED display type screens might be better off in your basement than on your boat too (chartplotter etc.)

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Old 16-10-2015, 11:25   #3
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Re: First time winterizing - a few questions

Thanks!

I'll keep an eye out for any drain plugs. We have a composting head so we (fortunately) don't also have to deal with the black water system, and we'll definitely be taking the batteries home.

Thanks again.
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