MASTERCRAFT
TECHNICAL TECHNIQUES
Shower Installation
Model Year(s):
2004, 2005
Model(s):
ProStar 190, 197 & X-7
Tools Needed:
Phillips head screwdriver; flathead
screwdriver; razor; Teflon tape; jigsaw;
possibly a grinder; 1” hole saw
Parts Needed:
Shower kit (#556252)
NOTE: EACH ENGINE HAS A DIFFERENT LOCATION FOR THE
WATER HOSE LOCATION BECAUSE THE WATER PUMP IS IN
DIFFERING PLACES ON EACH ENGINE. BEFORE BEGINNING THE
INSTALLATION PROCESS, LOCATE THE WATER PUMP.
Step 1:
To begin installation of the cold water valve, cut the
water pump hose 12” away from the water pump.
Step 2:
Place the PVC “T” valve supplied into the newly cut hose.
Secure both ends of the valve with Teflon tape and the
supplied hose clamps.
Step 3:
Tighten the clamps and allow a few minutes for the
Teflon tape to dry completely.
Step 4:
Connect the cold water line (blue hose) into the PVC “T”
valve.
Step 5:
On the bottom of the engine block, remove the brass cap and install
a brass water line to be run on the starboard side of the boat.
Step 6:
Connect the hot water line (red hose) to the brass water line connection.
Project:
Step 7:
Thread the hot (red), cold (blue) and white (output)
hoses through the temperature control cut-out. This is
located on the middle of the transom close-out of the
raised gas block, starboard side.
NOTE: If the cut-out has not been pre-cut, a jigsaw will
be needed to cut a 7”x2” rectangle, located 1” up
and 1” to the starboard of the raised gas block on the
transom closeout. This step may require a grinder to
widen the hole for the control to fit.
Step 8:
Connect the hot and cold hoses to their matching sides
on the temperature control by screwing the threads
tight.
Step 9:
Connect the clear hose to the middle output on the
temperature control by screwing the threads tight.
Step 10:
Install the temperature control with the four (4) screws
provided, on the starboard side of the raised gas
block on the transom closeout.
Step 11:
Install the shower pump with four (4) screws provided,
aft of the center of the gas tank.
Step 12:
Run the clear hose from the back of the temperature
control to the shower pump. Cut to length.
Back
cold water
clear hose
hot water
Front
Step 13:
Connect the clear hose to the input side of the
shower pump, securing the hose with a hose clamp.
Step 14:
Connect the output side of the shower pump to the
rest of the white hose, using a hose clamp.
Step 15:
Route the outlet hose around aft to the port side.
Step 16:
Thread the hose through the shower head backing plate
and then into the circular hole located on the port side
sun pad storage closeout.
NOTE: If the hole is not pre-drilled, then a hole saw will
be needed to cut a 1” circular hole as indicated.
Step 17:
Connect the end of the white hose to the outlet shower
head using a hose clamp. Be sure the hose is threaded
through the circular cut-out.
Step 18:
Install the outlet shower head by screwing the backing
plate onto the shower head threads.
Step 19:
Route the shower pump wires through the
starboard gunnel to the back side of the
dash and connect to the open panel
accessory switch.
Step 20:
Connect the black wires to the ground
terminal and the red wire to the power
terminal on the back of the switch.
Step 21:
Route the red and black wires from the
switch to the circuit breaker and the blue
wire to the navigational light switch.
Connect.
Step 22: If desired, replace the accessory switch
cover with the optional Shower switch
cover.
ground
power to
fuse box
light
power
power to
pump
Shower head
Temperature control and shower pump location
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