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"Dene" a écrit dans le
message de news:
...
I'll preface this post with the full
admission that I'm new to many
aspects
of boating, having just recently
purchased a '2000 Maxum 2400 SE.

Having said that, here are my
questions....

1. Manual Jabsco head isn't working
properly. The pump doesn't bring
water
in or out. Checked the seacock and
the handle is vertical, indicating
open
(I think).
snip
Hello,
One of the aspects of boating is
getting your hands dirty or paying
someone else to! ;o)
If the head is mounted above the
waterline (thus without a loop) you can
check
the seacock is allowing water in by
disconnecting the feed hose at the
head.
If there is no water (or a loop) the
test/fix is to backflush the hose with
utility water
or compressed air, to see if it is
blocked or free.
The act of pouring a bucket of water
into the bowl and pumping it out primes
the intake pump as well as proving the
outlet is open... If the level just
drops
slowly without a significant increase
in resistance whilst pumping, the
likely
cause is one of the circlips (spring
washers) holding the plunger on the
shaft has failed (a frequent fault).
No level drop with a great increase of
resistance indicates the outlet is
blocked, either
with something you really don't want to
know about or a closed outlet valve (on
tank?)
or worse still, a full tank!
If the level drops slowly with some
resistance, the likely cause is that
the head's outlet
valve, mounted where the outlet hose is
connected, has failed, and is no longer
sealing
properly during the up-stroke of the
pump.
Like most pumps, these toilets are very
reliable if one takes care of them,
which includes using them frequently,
but are destroyed almost instantly
by being used by someone who hasn't had
to repair them!

Hope this fault finding advice is of
use to you - and good luck!
Pierre.

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