Wildest Dream wrote:
My Head is in the forward middle and well below the deck I would say at
least below the bottom of the waste tank with a line at least 10' or 12'
long, I can see where a shorter line would be easier to pump, ( I have a
manual head ) I had it clog this yr....

That's about twice as far as the optimal distance from the toilet. As
for why it clogged, unless someone tried to flush something they
shouldn't have, it was most likely because you don't flush long enough
to move bowl contents all the way to the tank. That can be compounded by
a buildup of sea water minerals and urine crystals in the head discharge
hose.

When the tank is that far from the toilet, it's just about impossible to
flush long enough rinse out the hose every time the head is used without
filling up the tank with flush water. The solution: once a day--or at
least at the end of every weekend aboard, close the intake seacock (it
should always be closed while you're away from the boat anyway) and pour
a couple of quarts of clean fresh water into the bowl and flush it
through using the "dry" mode. Follow that with a cupful--no more--of
white vinegar, also flushed through in the dry mode. Do not leave
vinegar sitting in the bowl...that will destroy the joker valve in the
toilet.

...I never had any
problem with it backing up though, the head has a pretty good check valve on
it I guess.

It's called a joker valve, and it should be replaced at least every two
years if you want to keep working.

PS this is a stock 1994 26' Chris Craft Crowne, w/ aft cabin.

Most boatbuilders' "stock" sanitation system designs are the weakest
link on their boats....They totally ignore the concept that it IS a
system. So they stick the cheapest toilet in the head, use the cheapest
hose, and put a tank wherever there happens to be a space it'll fit in.
If they took the same approach with the fuel system that they do with
sanitation systems, their boats wouldn't run and 99% of would be
destroyed by fire in the first year.

Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://www.seaworthy.com/html/get_ri...oat_odors.html