[C320-list] Yanmar 3gm30f antifreeze

[Steven Snyder]

As Joe Luciano indicated, it is a metric Allen wrench. I use a Make A
Funnel to channel the coolant from the hose to a pan. There is also a
threaded plug on the starboard side of the 3YM30 which I let drain into the
sump below the engine. I use a drill powered pump to empty the sump into a
bottle for disposal.

Steve Snyder
Windcatcher
Hull # 1101

On Sun, Jun 27, 2021 at 10:59 AM Joe Luciano <jnluciano at comcast.net> wrote:

> it is a small allen wrench, don’t kknow the exact size.  I drain and
> refill mine every 1-2 years.  I can get a small container under it, but I
> have to put the plug back in one time before I get it fully drained out.  I
> have the YM model in hull number 1024.
>
> Joe Luciano
> Second Wind
>
> > On Jun 26, 2021, at 6:54 PM, RONALD HODEL <ronandgail2 at me.com> wrote:
> >
> > By fresh water I mean coolant!!  (Not the sea water hoses)
> > Ron
> >
> > Sent from my iPhone
> >
> >> On Jun 26, 2021, at 6:23 PM, RONALD HODEL <ronandgail2 at me.com> wrote:
> >>
> >> My biggest question has to do with the YM model. There’s a drain plug
> in the bottom of fresh water hose coming off the heat exchanger going to
> the fresh water pump. (The GM model apparently doesn’t have this same hose
> with the drain plug in it.) I can’t figure out how to get the drain plug
> out of it. Some say 2.5mm Allen wrench. Some say that doesn’t work.  I’m
> going to head up to Boatswains Locker sometime and ask them.
> >>
> >> Ron Hodel
> >> Lokomaikai #1070
> >>
> >> Sent from my iPhone
> >>
> >>> On Jun 26, 2021, at 10:50 AM, Troy Dunn <troutwarrior at gmail.com>
> wrote:
> >>>
> >>> Try this video.  Subscribe to his channel.  He has quite a few
> confidence
> >>> building videos for basic 3GM30 maintenance.   Note that you will run
> into
> >>> many of the same issues he describes in the video (e.g. the starboard
> side
> >>> drain will be clogged almost certainly).
> >>>
> >>> Hope this addresses your ask.    Once you think you got it, come back
> with
> >>> any specific concerns.   If this is your first time draining and
> filling,
> >>> skip the water heater hoses just like he does in the video.   That is
> not
> >>> necessary too often as long as you are changing the engine side often
> >>> enough.  If you are going for a full flush or changing over coolant
> type
> >>> that's a different story, you'll need to do a full drain of all lines
> and a
> >>> lot of flushing…
> >>>
> >>> https://youtu.be/aZv4IXFPMqg
> >>>
> >>>
> >>> Regards
> >>>
> >>> Troy Dunn
> >>> Hull #514
>
>