Installation Manual

ManualsBrandsGarmin ManualsCar & Vehicle Electronics010-01960-01 GT20-TM Transducer

Garmin ClearVü

Transducer Transom/

Trolling Motor Mount

Installation Instructions

Important Safety Information

WARNING

See the Important Safety and Product Information guide in the

chartplotter or fishfinder product box for product warnings and

other important information.

You are responsible for the safe and prudent operation of your

vessel. Sonar is a tool that enhances your awareness of the

water beneath your boat. It does not relieve you of the

responsibility of observing the water around your boat as you

navigate.

CAUTION

Failure to install and maintain this equipment in accordance with

these instructions could result in damage or injury.

Always wear safety goggles, ear protection, and a dust mask

when drilling, cutting, or sanding.

NOTICE

When drilling or cutting, always check what is on the opposite

side of the surface.

This equipment should be installed by a qualified marine

installer.

To obtain the best performance and to avoid damage to your

boat, you must install the Garmin

device according to these

instructions.

Read all installation instructions before proceeding with the

installation. If you experience difficulty during the installation,

contact Garmin Product Support.

Tools Needed

• Drill and drill bits

• Number 2 Phillips screwdriver

• Masking tape

• Marine sealant

Preparing the Transducer for Long-Term Exposure to

Water

NOTICE

Do not use acetone or acetone-based products on the

transducer. Acetone damages the plastic transducer housing.

When you install a transducer on a boat that spends a

significant amount of time in the water, you should coat the

transducer and mounting hardware with a water-based anti-

fouling paint to prevent marine growth.

Lightly sand the transducer and mounting hardware with a

fine-grit abrasive pad.

Wipe the transducer and mounting hardware with isopropyl

alcohol.

Apply water-based anti-fouling paint to the transducer and

mounting hardware.

Mounting Consideration

To ensure peak performance with the lowest noise and

interference, you should route the transducer cable away from

ignition wires, house batteries and wires, trolling motor batteries

and wires, and high-energy wires such as radar, audio amplifier,

and autopilot pump wires.

Installing the Transducer on a Transom

Mounting Location Considerations

• The transducer should be mounted parallel to the water line.

• The transducer should be mounted as close to the center of

the boat as possible.

• If your propeller moves clockwise when the boat moves, the

transducer should be mounted on the starboard side.

• If your propeller moves counter-clockwise when the boat

moves, the transducer should be mounted on the port side.

• The transducer should not be mounted behind strakes, struts,

fittings, water intake or discharge ports, or anything that

creates air bubbles or causes the water to become turbulent.

The transducer must be in clean (non-turbulent) water for

optimal performance.

• The transducer should not be mounted in a location where it

might be jarred when launching, hauling, or storing.

• On single-drive boats, the transducer must not be mounted in

the path of the propeller.

The transducer can cause cavitation that can degrade the

performance of the boat and damage the propeller.

• On boats with outboard or inboard/outboard motors, the

transducer should be mounted at least 38 cm (15 in.) from

the propeller.

• On twin-drive boats, the transducer should be mounted

between the drives, if possible.

Assembling the Transducer with a Transom Mount

Bracket

Attach the mount

to the transducer

with the included

star washers

, and screws

Attach the mount to the bracket

with the bolt

, rubber

washer

, flat washer

, and lock nut

NOTE: The bolt should be tight enough to hold the

transducer in place when the boat moves at high speed, but

loose enough to allow the transducer to pivot out of the way if

the transducer hits an obstruction.

February 2017

Printed in Taiwan 190-02116-02_0A

Summary of content (4 pages)

PAGE 1
Lightly sand the transducer and mounting hardware with a Garmin ClearVü Transducer Transom/ Trolling Motor Mount fine-grit abrasive pad. 2 Wipe the transducer and mounting hardware with isopropyl alcohol. Apply water-based anti-fouling paint to the transducer and 3 mounting hardware.
PAGE 2
Installing the Transom-Mount Hardware NOTICE 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 avoid cracking in the gel-coat layer when the screws are tightened. The cables connected to the transducer should not be cut, because cutting the transducer cables voids your warranty. 1 Cut out the template.
PAGE 3
2 Drive the boat at a slow speed. If the chartplotter appears to 3 4 5 6 7 be working properly, gradually increase speed while observing the chartplotter. If the sonar signal is suddenly lost or the bottom return is severely degraded, note the speed at which this occurs. Return the boat to the speed at which the signal was lost, and make moderate turns in both directions while observing the chartplotter. If the signal strength improves while turning, adjust the transducer so that it extends another 1/8 in.
PAGE 4
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