4. INSTALLATION
37
4.4
Transom Mount
Transducer
The optional transom mount transducer is
very commonly employed, usually on relative-
ly small I/O or outboard boats. Do not use this
method on an inboard motor boat because
turbulence is created by the propeller ahead
of the transducer.
DO NOT overtighten screws; they may be
damaged.
525-5PWD mounting locations
Select the installation method depending on
the rise angle of the hull.
Installation procedure
A suitable mounting location is at least 50 cm
away from the engine and where the water
flow is smooth.
1. Drill four pilot holes for self-tapping screw
(5x20) in the mounting location.
2. Coat the threads of the self-tapping
screws (5x14) for the transducer with sili-
cone sealant for waterproofing. Attach the
transducer to the mounting location with
the self-tapping screws.
3. Adjust the transducer position so the
transducer faces right to the bottom. If
necessary, to improve water flow and
minimize air bubbles staying on the trans-
ducer face, incline the transducer about
5° at the rear. This may require a certain
amount of experimentation for fine tuning
at high cruising speeds.
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.
Transom mount
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. Howev-
er, this installation method affects the ability to
detect the bottom, fish and other objects be-
cause the ultrasound pulse is weakened
when it passes through the hull.
Note:
This mounting method is not recom-
mended if ACCU-FISH and/or the bottom dis-
crimination display feature is used, since
performance is reduced.
Necessary tools
You will need the following tools:
• Sandpaper (#100)
• Silicone sealant
• Silicone grease
Transom
Transom
Stripe
Parallel with hull
Mount at the stripe.
Less than 10
°
Over 10
°
5x20
5x20
M5x14
5
°
Tape
Bracket
Transducer
Hull
2 to 5
°
Epoxy material
Содержание FCV-627
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