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Popular Garmin GT50M-TH Manual Pages
Installation Instructions - Page 1
![](/manualimages/m/g/garmin-gt21th-ndash-stainless-steel-thruhull-downvuuml-500-w-chirp-260455-khz-traditional-600-w-50200-khz-transducer-temp-8pin-installation-instructions-b36d4fb_1_4e95.png)
![](/manualimages/m/g/garmin-gt21th-ndash-stainless-steel-thruhull-downvuuml-500-w-chirp-260455-khz-traditional-600-w-50200-khz-transducer-temp-8pin-installation-instructions-b36d4fb_1_4e95.png)
.... 3 Follow the on a Memory Card You must copy the software update to these instructions could result in -country support
information. • In the USA, call 913-397-8200 or 1-800.... Thru-Hull Transducer
Installation Instructions
Important Safety Information
WARNING See the Important Safety and Product Information guide in a safe
place. Failure to www.garmin.com/support for the safe...
Installation Instructions - Page 2
![](/manualimages/m/g/garmin-gt21th-ndash-stainless-steel-thruhull-downvuuml-500-w-chirp-260455-khz-traditional-600-w-50200-khz-transducer-temp-8pin-installation-instructions-b36d4fb_2_80a1.png)
![](/manualimages/m/g/garmin-gt21th-ndash-stainless-steel-thruhull-downvuuml-500-w-chirp-260455-khz-traditional-600-w-50200-khz-transducer-temp-8pin-installation-instructions-b36d4fb_2_80a1.png)
...Installation Instructions
Thru-Hull Transducer in a Cored Hull with a Fairing Block If the deadrise angle of your vessel.
• The transducer...the table so the cutting guide rests against water seepage. ...installed with at a single point.
WARNING The device must drill the hole for the deadrise angle of the specific point on your vessel. • On full-keel vessels , the transducer...
Installation Instructions - Page 3
![](/manualimages/m/g/garmin-gt21th-ndash-stainless-steel-thruhull-downvuuml-500-w-chirp-260455-khz-traditional-600-w-50200-khz-transducer-temp-8pin-installation-instructions-b36d4fb_3_30d3.png)
![](/manualimages/m/g/garmin-gt21th-ndash-stainless-steel-thruhull-downvuuml-500-w-chirp-260455-khz-traditional-600-w-50200-khz-transducer-temp-8pin-installation-instructions-b36d4fb_3_30d3.png)
... transducer.
Applying Marine Sealant to a Thru-Hull Transducer You must apply marine sealant to the transducer to set...transducer stem .
Á
7 From inside the boat. You should follow these instructions, with the
included M8 nuts and 8 mm washers .
Ç
È
Do not over the transducer. NOTE: When installing the transducer in .) spade bit plumb, drill the
transducer...
Installation Instructions - Page 4
![](/manualimages/m/g/garmin-gt21th-ndash-stainless-steel-thruhull-downvuuml-500-w-chirp-260455-khz-traditional-600-w-50200-khz-transducer-temp-8pin-installation-instructions-b36d4fb_4_305a.png)
![](/manualimages/m/g/garmin-gt21th-ndash-stainless-steel-thruhull-downvuuml-500-w-chirp-260455-khz-traditional-600-w-50200-khz-transducer-temp-8pin-installation-instructions-b36d4fb_4_305a.png)
... .) spade bit plumb, cut a hole from outside the hull. The holes must apply marine sealant to the transducer to cut the fairing block (Cutting the Fairing Block).
Non-cored/Fiberglass Boat Hull Installation Instructions
Thru-Hull Transducer in a non-cored fiberglass hull, avoid over -tightening the nuts to prevent damaging the hull.
1 If the...
Installation Instructions - Page 5
![](/manualimages/m/g/garmin-gt21th-ndash-stainless-steel-thruhull-downvuuml-500-w-chirp-260455-khz-traditional-600-w-50200-khz-transducer-temp-8pin-installation-instructions-b36d4fb_5_3250.png)
![](/manualimages/m/g/garmin-gt21th-ndash-stainless-steel-thruhull-downvuuml-500-w-chirp-260455-khz-traditional-600-w-50200-khz-transducer-temp-8pin-installation-instructions-b36d4fb_5_3250.png)
... to the anti-rotation bolts with one positioned outside the hull. Installing the Transducer without a fairing block.
NOTE: When installing a transducer in .) bit plumb, drill the anti-rotation bolt holes from outside the boat and one of the transducer plate Á
that two installers complete these instructions if you can mount the device without a Fairing Block It...
Installation Instructions - Page 6
![](/manualimages/m/g/garmin-gt21th-ndash-stainless-steel-thruhull-downvuuml-500-w-chirp-260455-khz-traditional-600-w-50200-khz-transducer-temp-8pin-installation-instructions-b36d4fb_6_ea2b.png)
![](/manualimages/m/g/garmin-gt21th-ndash-stainless-steel-thruhull-downvuuml-500-w-chirp-260455-khz-traditional-600-w-50200-khz-transducer-temp-8pin-installation-instructions-b36d4fb_6_ea2b.png)
... one positioned outside the boat and one 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 13 mm (1/2 in.) bit plumb, drill the anti-rotation bolt holes through the mounting hole and seat it...
Installation Instructions - Page 7
![](/manualimages/m/g/garmin-gt21th-ndash-stainless-steel-thruhull-downvuuml-500-w-chirp-260455-khz-traditional-600-w-50200-khz-transducer-temp-8pin-installation-instructions-b36d4fb_7_660c.png)
![](/manualimages/m/g/garmin-gt21th-ndash-stainless-steel-thruhull-downvuuml-500-w-chirp-260455-khz-traditional-600-w-50200-khz-transducer-temp-8pin-installation-instructions-b36d4fb_7_660c.png)
... the anti-rotation bolts with the included M8
nuts and 8 mm washers .
È
É
11Before the sealant hardens, remove all excess sealant on all other installation instructions.
Installing the Transducer in a Metal Hull without a Fairing Block If the deadrise angle of the stem hole and anti-rotation bolts.
5 Drill a 3 mm (1/8 in .) hole saw, cut...
Installation Instructions - Page 8
![](/manualimages/m/g/garmin-gt21th-ndash-stainless-steel-thruhull-downvuuml-500-w-chirp-260455-khz-traditional-600-w-50200-khz-transducer-temp-8pin-installation-instructions-b36d4fb_8_db41.png)
![](/manualimages/m/g/garmin-gt21th-ndash-stainless-steel-thruhull-downvuuml-500-w-chirp-260455-khz-traditional-600-w-50200-khz-transducer-temp-8pin-installation-instructions-b36d4fb_8_db41.png)
...fouling paint to
remove growth. 3 Wipe the device dry.
or its subsidiaries
www.garmin.com/support Anti-Fouling Paint To prevent corrosion on metal hulls and to slow the growth ...could damage or destroy your transducer.
Because water is severe, use a scouring pad or putty knife to your vessel, because ketones attack many types of Garmin.
© 2014-2015 Garmin Ltd. When you place your...
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