Installing the Fishfinder 340C

To ensure the successful operation of your Fishfinder 340C, you must properly install the Fishfinder and all of its related parts.

To install and use your Fishfinder, you must do the following:

1.Select a proper location for the Fishfinder.

2.Mount the Fishfinder.

3.Install your transducer.

4.Connect to your power source.

5.Test the installation.

Each of these steps is described in detail in the following sections.

Selecting a Location for the Fishfinder

Consider the following when you select an installation location:

•Provides optimal viewing as you operate your vessel.

•Allows easy access to the unit’s keypad.

•Is strong enough to support the weight of the Fishfinder and protect it from excessive vibration or shock.

•Allows room for the routing and connection of the power/ data and transducer cables. There should be at least a 3-inch (8 cm) clearance behind the case.

Installing the Fishfinder 340C > Selecting a Location for the Fishfinder

DO NOT mount the unit in an area that is exposed to extreme temperature conditions.

NOTE: The temperature range for the Fishfinder 340C is 5°F to 131°F (-15°C to 55°C). Extended exposure to temperatures exceeding this range (in storage or operating conditions) may cause failure of the LCD screen. This type of failure and related consequences are NOT covered by the manufacturer’s limited warranty.

To get the best possible performance from your Fishfinder 340C:

•Read the instructions first, and then follow the instructions to install the unit.

•Gather the appropriate fasteners and tools.

•Verify that all cables can reach the unit mounting location and the transducer.

•Wear safety goggles and a dust mask when drilling, cutting, or sanding.

If you experience difficulty installing the unit, contact Garmin Product Support or contact a professional installer.

Fishfinder 340C Owner’s Manual