QSB 5.9 Coolant drain and fill

[Tim Vandersall]

Hello guys, I will be draining and replacing coolant on my 2005 Mainship for my first time.  In reviewing your technical info, you show a drain plug at the red arrow, but mine does not have a plug there.  I do see a plug at the other end of this tube, as shown in my photos where my finger is pointing (the next is the close up one is from underneath the tube).  Wondering if you can confirm if this would be the drain plug, and if you have any tips on refilling.  Any help is greatly appreciated.  Thank you!!

Topic

[Tony Athens]

The plug under here will drain the entire system

[Tim Vandersall]

Still cannot find-see new photo

I do not see any other drains in the location that pic 1 from Seaboard shows there should be one.  I circled the zinc that I’ve changed a few times on this new photo, and put another circle where the only plug is that I can find in this area. Still confused.  Sure seems like the plug is the only possible low-lying drain potential.

[Fireisland1]

Pic 2 is a zinc. Not a drain. That is raw water side of HE. Look below and aft for the aintfreeze drain

[Author]

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