Garmin GT36UHD/GT56UHD Transducer Installation Instructions

Installation instructions for Garmin GT36UHD and GT56UHD transducers, covering transom and trolling motor mounting, cable routing, and testing.


Garmin GT36UHD/GT56UHD Transducer Installation Instructions - cover page
Brand
Garmin
Category
Other
Document type
Installation Guide
Language
English
Pages
4
File format
PDF
File size
588 KB
Published
24 October, 2026
Updated
24 October, 2026
MD5 checksum
E72B28A5CDB24160BD936159A5D44513

About this manual

This document provides installation instructions for the Garmin GT36UHD and GT56UHD transducers. It includes important safety information, a list of required tools, and specific mounting considerations to ensure optimal sonar performance and prevent damage to the vessel. The guide details the preparation of the transducer for long-term water exposure, including the use of anti-fouling paint.

What's inside

  • Important Safety Information
  • Tools Needed
  • Mounting Considerations
  • Preparing the Transducer
  • Installing on a Transom Mount
  • Installing on a Trolling Motor
  • Testing the Installation

Frequently asked questions

What tools are required for installing this transducer?

You need a Number 2 Phillips screwdriver, a drill with specific bits (4 mm, 3.2 mm, and 25 mm), masking tape, and marine sealant.

How deep should the transducer extend below different types of hulls?

It must extend 3.5 mm (0.125 in.) below a fiberglass hull or 10 mm (0.375 in.) below an aluminum hull.

What is the maximum recommended length for extending the transducer cable?

You should not extend the cable more than 9 m (30 ft.) to avoid signal degradation.

Download PDF (588 KB)

More Garmin Manuals


View all Garmin manuals →