Humminbird XTH 9 DB 74 P Guide D'installation

PLASTIC THRU-HULL TRANSDUCER Installation Guide
Read the instructions in this transducer guide completely to understand the mounting
guidelines before starting the installation.
NOTE: The illustrations in this manual may not look the same as your product, but your product
will function in the same way.
Review your boat manufacturer's owner's manual for recommended transducer installation
locations and cable routing methods. You will also need your hull's deadrise angle.
Read and understand your boat's warranty before starting this installation.
Test Route the Cable Installation: Test route the transducer cable connector to the control
head and confirm that the cable is long enough for the planned route. Your boat may have a
pre-existing wiring channel or conduit that you can use for the transducer cable. See section
6: Route the Cable for requirements. Your installation may require extension cables and
hardware for routing the cable to the control head.
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: In addition to the supplied hardware, you will need a drill, a small drill bit for the pilot
hole, a 1 1/8" (2.8 cm) hole saw, a level, a Phillips-head screwdriver, and marine-grade silicone
sealant.
Installation Overview
This type of transducer installation is not recommended for trailerable boats.
NOTE:
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| Test the Transducer Prior to Installation
Prior to installation, test the transducer to make sure that no damage occurred during shipping.
1. Confirm the control head is connected to power. See your control head installation guide for
instructions.
2. Connect the transducer cable connector to the transducer (or sonar) port on the control head.
See section 7: Connect the Cable.
3. Power On: Press the POWER key to turn on the control head.
If the transducer is detected, the control head will start Normal mode.
4. Select a 2D Sonar View to display on-screen.
See your control head operations manual for more information.
NOTE:
5. Lower the transducer into the water. (The transducer must be fully submerged because the
sonar signal cannot pass through air and air pinging can damage the transducer).
If the bottom is visible on-screen with a digital depth readout, the transducer is working
properly.
Installation Preparation
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