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Garmin Fishfinder 300C User Manual

Garmin Fishfinder 300C
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Fishnder 300C Installation Instructions
Compare the contents of this package with the packing list on the box. If any pieces are missing, contact your Garmin dealer immediately.
Before you begin the installation:
Read and follow the instructions to install the Fishnder 300C.
Gather the appropriate fasteners and tools.
Verify that all cables can reach the Fishnder 300C mounting location and the transducer.
Wear safety goggles and a dust mask when drilling, cutting, or sanding.
If you experience difculty installing the Fishnder 300C, contact Garmin Product Support or contact a professional installer.
WARNING: See the Important Safety and Product Information guide in the product box for product warnings and other important
information.
To install and use your Fishnder 300C:
1. Select a location.
2. MounttheFishnder300C.
3. Installthetransducer.
4. Installthewiringharness.
5. Test the installation.
Step 1: Select a Location for the Fishnder 300C
Consider the following when you select an installation location:
Provide optimal viewing as you operate your vessel.
Allow easy access to the keypad on the Fishnder 300C.
Is strong enough to support the weight of the Fishnder 300C and protect it from excessive vibration or shock.
Allow room for the routing and connection of the cables. There should be at least a 3-inch (8 cm) clearance behind the case.
DO NOT mount the Fishnder 300C in an area that is exposed to extreme temperature conditions.
NOTE: The temperature range for the Fishnder 300C is from 5°F to 131°F (from -15°C to 55°C). Extended exposure to temperatures exceeding this
range (in storage or operating conditions) may cause failure of the LCD screen or other components. This type of failure and related consequences are
not covered by the manufacturers limited warranty.
Step 2: Mount the Fishnder 300C
You can mount your Fishnder 300C in one of two ways:
Bail Mount—mount the Fishnder 300C onto the bracket that attaches to the console or overhead.
Flush Mount—use the ush mount kit to mount the Fishnder 300C into a at panel.
Bail Mounting the Fishnder 300C
The Fishnder 300C is suitable for mounting in exposed locations or at the navigation station. The included tilt mounting bracket can be used
for console or overhead mounting. Bail mounting requires the following tools and hardware:
Three of the included number 8 (4.2 × 1.4 DIN7981) ANSI mounting screws
Phillips-head screwdriver (not included)
Drill and drill bit (not included)
Center punch and hammer (not included)
December 2007 190-00864-03 Rev. B Printed in Taiwan

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Garmin Fishfinder 300C Specifications

General IconGeneral
Display Size3.5 inches
Display TypeColor TFT
Resolution320 x 240 pixels
Power Output300 watts (RMS)
Waterproof RatingIPX7
TransducerIncluded
Transducer TypeDual-beam
Frequency77 kHz / 200 kHz
Maximum Depth1500 feet
Sonar TypeDual-beam
Sonar Frequency77 kHz / 200 kHz
Maximum Depth (freshwater)1500 feet
Weight1.5 lbs

Summary

Step 1: Select a Location for the Fishfinder 300C

Step 2: Mount the Fishfinder 300C

Bail Mounting the Fishfinder 300C

Mount the Fishfinder 300C onto the bracket that attaches to the console or overhead.

Flush Mounting the Fishfinder 300C

Use the flush mount kit to mount the Fishfinder 300C into a flat panel.

Step 3: Install the Transducer

Assembling the Transducer

Instructions for assembling the transducer with the rubber washer and plastic spacer.

Mounting the Transducer on a Trolling Motor

Mount the transducer onto the motor body of a trolling motor with the front pointed away from the propeller.

Mounting the Transducer on a Transom

Select a transom-mount location for optimal performance in calm water.

Step 4: Install the Wiring Harness

To install the wiring harness

Connect the red (+/positive) and black (-/ground) wires to the voltage source.

Connecting to a NMEA device

Connect the Fishfinder 300C to additional NMEA 0183-compatible electronic equipment.

Step 5: Test the Installation

To initialize your Fishfinder 300C settings

Configure initial settings like language, units, and color scheme on first startup.

To test the transom-mount transducer installation

Test sonar operation at different boat speeds and adjust transducer for optimal signal.

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