Hi Rick,

The boat is in Palacios TX. I had a good
telephone conversation with Peggie Hall today, and
she was very helpful. Based on that, I think that
the vent to the holding tank may be plugged, and
that there may be some buildup in the sewage
lines. The head flushes, but very slowly. When
you try to flush to the holding tank, it builds up
back pressure and flushes even more slowly. This
is all flushing with just seawater, as I have not
tried to actually use the thing yet.

The PO's had just installed the head when we
bought the boat. It could be that they replaced
the old pump style head because they were having
problems, and had not quite got the problems
sorted out with the new head before it sold.

Since some of the sewage lines are vintage 1985, I
think that I may replace them with new marine
hose, and replace all the clamps at the same time.
Now I've just got to find that pesky holding
tank vent, and find out why its not venting.

Don W.

Rick wrote:

One thing you might try is asking an experienced boater to look over your
head...

Where are you located???