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trolling motor (downward if mounted on the shaft, upward if
mounted below the motor).
• For a forward-facing transducer mounted on a transom
mount, the cables should be routed out of the transducer
toward the transom.
Transducer Mounting Angle Considerations
The forward-view mount is not rated for speeds over 40 km/h
(25 mph).
• The internal attitude heading and reference system (AHRS)
sensor detects the mounting angle of the transducer in
relation to the water surface. When the Use AHRS setting is
turned off in the chartplotter installation menu, it is assumed
the transducer is mounted at a 45-degree angle and the
down-view transducer is mounted at a 0-degree angle.
• The higher the degree of the mounting angle and the more
vertical the transducer, the less a strong bottom echo
interferes with viewing targets in the water. To see more
suspended targets, you should mount the transducer at a
higher-degree, more vertical angle.
• To reduce rings that can appear with a strong bottom echo,
you should mount the transducer at a higher degree, more
vertical angle.
Installing the Transducer on a Transom
Assembling the Transom-Mount Hardware
1
Attach the transducer mount bracket
using four of the included 7 mm M4 mounting screws
M4 lock washers
.
2
Attach the transducer mount bracket to the transom mount
bracket
using the included 16 mm M8 bolts
washers
, and M8 lock nuts
3
Route the Ethernet cable to the installation location of the
network switch or to the back of the MFD.
NOTE: The cable should not be routed close to electrical
wires or other sources of electrical interference.
TIP: Cutting the cables is not recommended, but a field
installation kit can be purchased from Garmin or a Garmin
dealer if cutting the cables is necessary.
4
Route the power cable to a 12 Vdc power source.
Installing the Transom-Mount Hardware
If you are mounting the bracket on fiberglass with screws, it is
recommended to use a countersink bit to drill a clearance
counterbore through only the top gel-coat layer. This will help to
2
NOTICE
to the transducer
, M8 flat
.
NOTICE
avoid any cracking in the gel-coat layer when the screws are
tightened.
1
Position the transducer mount
transducer sits below the water line.
2
Mark the location of the holes of the transducer mount.
3
Using a 4 mm (
19
15 mm (
/
in.) deep at the marked locations.
32
4
Apply marine sealant to four of the provided 8 mm M4
mounting screws, and attach the transducer assembly to the
transom using the M4 screws and M4 lock washers.
TIP: On boats with thinner hulls, you can place a wood
backing block inside the hull at the mounting spot to lessen
the pressure on the mounting screws.
5
If possible, route the cables to come out of the transducer on
the starboard side.
NOTE: If you must route the cables to come out the port side,
you must select the Flipped option in your chartplotter
installation menu for an accurate display.
and
6
For the downward-facing transducer, adjust the mount so the
transducer points straight down.
7
For the forward-facing transducer, adjust the mount so the
transducer points toward the front of the boat at an angle
based on the transducer mounting angle considerations.
8
For the forward-facing transducer, adjust the bolt tension to
allow the mount to close if the transducer collides with an
object.
Installing the Transducer on a Trolling Motor
Trolling Motor Mount Considerations
• Placement of the transducer on a trolling motor depends on
the type of trolling motor you have installed on your boat.
Check with your trolling motor manufacturer for information
on the proper placement of your trolling motor mount.
• The transducer should be mounted on the shaft on most
cable-steered trolling motors, because the motor may not be
rugged enough to support the weight of the transducer and
mount. This mounting location blocks the view directly below
the trolling motor, but allows for a longer-range forward view
because there is less bottom interference. Mounting the
transducer on the shaft also offers more protection, and the
weight of the transducer and mounting hardware place less
strain on the trolling motor system
• The transducer should not be mounted on the motor of some
types of trolling motors, because the transducer can damage
the steering cables and bearings, and it can hit the boat hull
during deployment and retraction.
• The transducer can be mounted on the motor of some hand-
steered and wireless trolling motors, but you must make sure
you can safely deploy and retract the trolling motor with the
transducer attached.
• On trolling motors with steering cables, place the transducer
as close to the center line of rotation as possible to decrease
the resistance on the motor.
so the bottom of the
5
/
in.) bit, drill the pilot holes approximately
32
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