background image

Transom-Mount Transducer 

Installation Instructions

To obtain the best performance and to avoid damage to your 

boat, you must install the Garmin

®

 transducer according to these 

instructions.
Read all installation instructions before proceeding with the 

installation. If you experience difficulty during the installation, 

contact Garmin Product Support.

Registering Your Device

Help us better support you by completing our online registration 

today.
• Go to 

http://my.garmin.com

.

• Keep the original sales receipt, or a photocopy, in a safe 

place.

Contacting Garmin Product Support

• Go to 

www.garmin.com/support

 and click 

Contact Support 

for in-country support information.

• In the USA, call (913) 397.8200 or (800) 800.1020.
• In the UK, call 0808 2380000.
• In Europe, call +44 (0) 870.8501241.

Important Safety Information

 WARNING

See the 

Important Safety and Product Information

 guide in the 

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.

Loading the New Software on a Memory 

Card

You must copy the software update to a memory card.

1

Insert a memory card into the card slot on the computer.

2

Go to 

www.garmin.com/support/software/marine.html

.

3

Select 

Download

 next to “Garmin Marine Network with SD 

card”.

4

Read and agree to the terms.

5

Select 

Download

.

6

If necessary, select 

Run

 or save and open the file.

7

If necessary, select the drive associated with the memory 

card, and select 

Next

 > 

Finish

.

Updating the Device Software

Before you can update the software, you must obtain a 

software-update memory card or load the latest software onto a 

memory card.

1

Turn on the chartplotter.

2

After the home screen appears, insert the memory card into 

the card slot.

NOTE: 

In order for the software update instructions to 

appear, the device must be fully booted before the card is 

inserted.

3

Follow the on-screen instructions.

4

Wait several minutes while the software update process 

completes.
The device returns to normal operation after the software 

update process is complete.

5

Remove the memory card.

NOTE: 

If the memory card is removed before the device 

restarts fully, the software update is not complete.

Tools Needed

• Drill and drill bits
• 7 mm wrench
• 3 mm hex wrench
• Number 2 Phillips screwdriver
• Masking tape
• Marine sealant

About the Transducer

The transducer transmits and receives sound waves through the 

water, and relays sound-wave information to your Garmin sonar 

device.

Assembling the Transducer

1

Secure the mount 

À

 to the transducer 

Á

 with the included 

8 mm M4 screws 

Â

, 4 mm flat washers 

Ã

, and M4 split 

washers 

Ä

.

2

Secure the mount to the bracket 

Å

 with the included 12 mm 

M4 screws 

Æ

, M4 flat washers 

Ç

, and M4 lock nuts 

È

.

NOTE: 

You can use the 7 mm wrench to hold the lock nut in 

place while you tighten each 12 mm M4 screw.

October 2014

Printed in Taiwan

190-01681-02_0B

Summary of Contents for GT30-TM

Page 1: ...date to a memory card 1 Insert a memory card into the card slot on the computer 2 Go to www garmin com support software marine html 3 Select Download next to Garmin Marine Network with SD card 4 Read and agree to the terms 5 Select Download 6 If necessary select Run or save and open the file 7 If necessary select the drive associated with the memory card and select Next Finish Updating the Device ...

Page 2: ...2 in deep at the marked locations 6 Apply marine sealant to the included 20 mm screws and attach the transducer assembly to the transom NOTE A third screw in the lower center screw hole stabilizes the mount 7 If you must route the cable through the transom choose a pilot hole location well above the waterline à and mark it 8 Place a cable clamp on the transducer cable Ä approximately one third of ...

Page 3: ...of the boat and put the transducer at risk of striking underwater objects Test the transom mount transducer installation in open water free of obstacles Pay attention to your surroundings as you test the transducer 1 With the boat in the water turn on the chartplotter 2 Drive the boat at a slow speed If the chartplotter appears to be working properly gradually increase speed while observing the ch...

Page 4: ...are trademarks of Garmin Ltd or its subsidiaries registered in the USA and other countries These trademarks may not be used without the express permission of Garmin 2013 2014 Garmin Ltd or its subsidiaries www garmin com support ...

Reviews: