INSIDE THE HULL MOUNTED TRANSDUCER
Installation Guide
Before you start the installation, we encourage you to read these instructions carefully in order to
get the full benefit from your Humminbird® accessory.
NOTE: Due to the wide variety of hulls, only general instructions are presented in this guide.
Each boat hull represents a unique set of requirements that should be evaluated prior to
installation. For detailed information about installing transducers on different hull types,
download the Transducer Installation Resource Guide from our Web site at humminbird.com.
NOTE: Your transducer may not look exactly like the transducer shown in the illustrations,
but it will mount in exactly the same way.
Install the control head before you start the transducer installation. See the control head
installation guide.
Review your boat manufacturer's owner's manual for recommended transducer installation
locations and cable routing methods.
Read and understand your boat's warranty before starting this installation.
Visit our Web site at humminbird.com for additional information and resources for transducer
installations. Also, visit youtube.com/humminbirdtv for informational videos.
Confirm your boat is level for the installation.
Supplies for Temp Probe: In addition to the parts supplied, you will need a hand drill with
various size bits, marine-grade silicone sealant, and various hand tools.
Installation
There are a number of ways to install a transducer on your boat. Inside the hull mounting of the
transducer generally produces good results in single thickness fiberglass hulled boats. Humminbird
cannot guarantee depth performance when transmitting and receiving through the hull of the boat,
since some signal loss will occur. The amount of loss depends on hull construction and thickness,
and the installation.
NOTE: This type of installation requires the use of a slow-cure two-part epoxy. Do not use
silicone or any other soft adhesive material to install the transducer, as this material will
reduce the sensitivity of the unit. Do not use five-minute epoxy, as it has a tendency to cure
before all the air bubbles can be purged, which reduces signal strength.
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| Locate the Transducer Mounting Position
Decide where to install the transducer on the inside of the hull, using the following procedures to
find the best location:
1. Observe the outside of the boat hull to find the areas that are mostly free from turbulent water.
Avoid ribs, strakes, and other protrusions, as these create turbulence.
2. Make sure that the transducer is located as close to the centerline of the hull and as far aft as
possible, so that it will remain in contact with the water even at high speeds.
Installation Preparation
1
530509-8_A
Inside the Hull Installation
Angled Transducer Installation