David;
The vent for your holding tank will be a plastic, zinc, or stainless hooded vent like the ones for your fuel tank and water tank(s). You will probably find it just under the toe rail on the side of your boat above/ near where the holding tank is located. On both of my boats, the vent is located in the top rear of a locker for access. Normally the vent has a short threaded length with a washer and nut on the inside to hold it in the hull. There should be a hose barb sticking out of the fitting, and that is the top end of your vent hose. As I recommended before, look for a plugged screen in the vent on the outside of the hull before you look at anything else. Unless you don't have spiders and wasps where you live. Rick Brass From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of David Knecht Sent: Monday, November 04, 2013 10:28 AM To: CnC CnC discussion list Subject: Re: Stus-List water level in head/bowl As to the vent, I think I can get to the bottom of the vent line fairly easily. I doubt I can reach the other end from inside. How is the vent cap attached to the hull? Can I take it off and get to that end of the hose if replacement is needed? Dave David Knecht Aries 1990 C&C 34+ New London, CT
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