4. INSTALLATION
37
4. Tape the location shown in the figure be-
low. Fill the gap between the wedge front
of the transducer and transom with epoxy
material to eliminate any air spaces.
5. After the epoxy hardens, remove the
tape.
4.5 How to Mount a
Thru-hull Trans-
ducer Inside the
Hull
The thru-hull mount transducer may also be
installed inside the hull on FRP boats. How-
ever, this installation method affects the ability
to detect the bottom, fish and other objects
because the ultrasound pulse is weakened
when it passes through the hull. Do not install
the transducer inside the hull on a steel or
wooden hull vessel, since the ultrasound
pulse cannot penetrate those hulls.
Note: This mounting method should not be
used to mount the transducer that supports
the bottom discrimination display feature,
since performance is greatly degraded.
Necessary tools
You will need the following tools:
Remarks on installation
Bracket
Transducer
Hull
2 to 5°
Epoxy material
• Sandpaper (#100)
• Marine sealant
• Silicone grease
• Do the installation with the ship moored at a
dock, etc. The water depth should be
6.5-32 feet (2-10 meters).
• Turn off the engine.
• Install the transducer in the engine room.
• Do not power the unit with the transducer in
the air to prevent damage to the transducer.
• Do not use this method on a double layer
hull.
• Before attaching the transducer to the hull,
check that the site is suitable by the proce-
dures mentioned below.
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