
20 Holland Marine Parts / MasterCra | Installaon manual and user guide
1: Place vessel horizontal. Select opmum posion for nozzle: As far to the front of bow or
stern as possible, top side of nozzle 10cm / 4” below water line. Nozzle horizontal and in 90˚
angle to the heart line of the vessel.
Note: Not placing the nozzles as far to the front or a as possible reduces the overall
eecveness of the system!
Laser equipment can assist selecng opmum posion and determine if vessel is placed
perfectly horizontal.
2: Make sure the posion of both nozzles and the components like the ball valves, elbows, hose
connector, hoses and hose clamp are not in conict with available space before a hole is made.
Drill a pilot hole. Keep drill horizontal!
Nozzles can be posioned shied horizontal and vercal in case of a narrow bow. Hoses can
be crossed in order to place the nozzles further to the front of the bow. See image at point 8
for visible explanaon.
3-4: Use a 60mm / 2⅜” hole saw to drill the holes
for the nozzle.
Keep drill horizontal and in 90˚ posion to the vessel’s
heart line. (see illustraon page 30)
5: Smoothen edges
6: Fit in the nozzle and check if nozzle is placed horizontal and in 90˚ angle to the heart line of
the vessel e.g. by inserng the nozzle from the inside out to determine if hole is drilled correct.
10 Installing the nozzles
In case of steel or aluminum vessel plang weldable nozzles are available.
For polyester and wooden vessel plang ange treaded nozzles are available.
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