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Popular Garmin GT21-TH Manual Pages
Installation Instructions - Page 1
.... Loading the New Software on -screen instructions. 4 Wait several minutes while the software update process completes. Read all installation instructions before the card is complete. 5 Remove the memory card.
Updating the Device Software Before you can update the software, you experience difficulty during the installation, contact Garmin Product Support. Failure to do so could result in...
Installation Instructions - Page 2
... angles depending on your boat hull. The wood becomes a cutting guide for the deadrise angle of the specific point on the shape of the propeller.
Failure to do so ...The transducer must be cut the fairing block (Cutting the Fairing Block).
Cored Fiberglass Boat Hull Installation Instructions
Thru-Hull Transducer in a Cored Hull with an angle finder, a protractor, or a digital...
Installation Instructions - Page 3
...the hole. 7 Seal the exposed inner core with epoxy , and allow the
à epoxy to set thoroughly. 8 While holding a 25 mm (1 in.) spade bit plumb, drill the
transducer stem hole...boat.
The holes must be perpendicular to the face of the backing block that two installers complete these instructions if you can mount the device without surface irregularities or
obstructions. 3 Using the ...
Installation Instructions - Page 4
... the transducer
Ä
Å
stem.
Failure to do so could result in a non-cored fiberglass hull, avoid over the transducer.
Non-cored/Fiberglass Boat Hull Installation Instructions
Thru-Hull Transducer in a Non-Cored or Fiberglass Hull Before you can drill holes for the anti-rotation bolts, you must drill the hole for...
Installation Instructions - Page 5
... transducer template. 2 Select a mounting location without a fairing block. You should follow these instructions, with one positioned outside the hull, insert the transducer cable and Ä
transducer stem ... 25 mm (1 in the device rotating while the boat is recommended that two installers complete these instructions if you are not using a fairing block or isolator plate to mount your...
Installation Instructions - Page 6
... -tighten the hull nut.
5 From inside the boat.
1 Secure the bushings to the anti-rotation bolts and
À
Á
transducer stem .
Â
Metal Boat Hull Installation Instructions
Thru-Hull Transducer in a Metal Hull with a Fairing Block
It is recommended that has a metal hull. 1 Select a mounting location without surface irregularities or
obstructions.
6
2 Apply...
Installation Instructions - Page 7
....
3 Apply marine sealant to the base of the transducer stem Ã
and anti-rotation bolts, and the side of the isolation plate that two installers complete these instructions if you must use the included isolation plate.
1 Secure the bushings to the anti-rotation bolts .
À
Á
2 Seat the isolation plate firmly against...
Installation Instructions - Page 8
... Y-cable
Maintenance
Testing the Installation
NOTICE You should apply a water-based anti-fouling paint to the hull of your vessel every six months. Anti-Fouling Paint To prevent corrosion on metal hulls and to slow the growth of Garmin.
© 2014-2015 Garmin Ltd.
or its subsidiaries
www.garmin.com/support Because water is severe...
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