Four winns SL Series Owner's Manual page 83

The fresh water pump supplies water to the aft shower
and when installed the cockpit faucet. The pump is
generally located in the vicinity of the fresh water tank.
To operate the shower:
Place the "FRESH WATER" switch "ON", push the
spray nozzle button to purge any air that may be in the
system. When a steady flow of water is coming from
the shower nozzle the air has been purged. Release
the spray nozzle when finished. As the pressure
builds, the pump will automatically shut off at 35 psi.
When properly primed and activated, the pressurized
water system can be used in the same manner as
the water system in a home. An automatic pressure
sensor in the water pump keeps the system pressur-
ized. Sim ply operate the spray nozzle and water will
be delivered. If the system has been recently filled, or
has not been used for an extended period of time, air
bubbles may accumulate at the pump. If this should
happen, re-priming may be necessary.
J - 4 HEADS
A. Enclosed Heads
A fully enclosed fiberglass head is a standard feature
built into the port console. These roomy heads offer
an expandable hatch (for extra head room), smoked
acrylic skylight, storage cabinet, fiberglass liner, porta-
potti, and overhead lighting. Note: Models may vary.
See Figure J5. Refer to the manufacturer's literature
included in the owner's packet regarding the use, care
and maintenance of the porta-potti.
Figure J5: Enclosed Head
Waste & Water Systems - Section J
B. Porta-Potti
Preparation:
Separate unit by sliding the locking lever to the left
"unlocked" position and hold (Figure J6A). Separate
the units (Figure J6B).
Figure J5 (A & B): Separate Porta-Potti
With the waste tank (lower section) sitting flat, open
valve by pulling handle out (Figure J7A).
Add deodorant through the valve opening (Figure
J7B). Use Thetford Holding Tank Deodorant (sample
included) in built-in storage compartment (Figure
J7/C). Add water to cover tank bottom. Close valve
and replace deodorant (Figure J7D).
Figure J7 (A - D): Porta-Potti Preparation
Recombine the unit. Align hinge with front interlocking
tabs. To secure unit, press downward – it should click
into place.
Fill fresh water tank by removing the water fill cap and
filling the tank with fresh water (Figure J8). (NEVER
add holding tank chemical to the fresh water tank
assembly.) Replace and tighten the cap securely.
Figure J8: Filling Fresh Water Tank
Owner's Manual Page 80