Lowrance HOOK2 7X Fish Finder User Manual

1. Product Overview

The Lowrance HOOK2 7X GPS SplitShot is a fishfinder and GPS plotter designed for marine use. It features a 7-inch color LCD display and utilizes CHIRP-Hi (200KHz) 200Watt and 455/800 KHz DownScan 500 Watt sonar technologies. This unit includes a transom mount SplitShot transducer, providing comprehensive underwater imaging.

Figure 1: Lowrance HOOK2 7X Fish Finder unit.

Key Features:

• Easiest to Use: Features auto-tuning sonar and phone-like menus for simplified operation.
• Wider Sonar Coverage: Offers a wide-angle CHIRP sonar cone, providing double the coverage of traditional fish finders.
• Easy Setup: A single transducer can be mounted on the transom, inside the hull, on the trolling motor, or through a scupper hole.
• More Sonar Views: Comes with a SplitShot transducer for DownScan sonar (straight down) and CHIRP sonar (fish arch) views.
• Fish Finder & GPS: Provides basic navigation with a GPS plotter for adding waypoints, following trails, and navigation.

2. Setup and Installation

Proper installation is crucial for optimal performance of your Lowrance HOOK2 7X. The unit is designed for straightforward setup with minimal connections.

Connecting the Unit:

The HOOK2 7X requires only two main connections: the transducer cable and the power cable. These are designed for easy plug-and-play installation.

Figure 2: Rear view of the HOOK2 7X unit, highlighting the transducer and power cable ports.

Transducer Mounting:

The included SplitShot transducer can be mounted in various locations depending on your boat type and preference:

• Transom Mount: Most common and provides clear readings.
• Inside the Hull: Suitable for fiberglass hulls, offering protection to the transducer.
• Trolling Motor Mount: Ideal for precise targeting in specific areas.
• Through-Hull/Scupper Mount: Provides a clean installation with minimal drag.

For detailed instructions on transducer mounting and wiring, please refer to the official Installation Manual available as a PDF document. A general overview of the HOOK2 series features, including ease of installation, is provided in the video below.

3. Operating Instructions

The Lowrance HOOK2 7X is designed for intuitive operation, allowing you to focus on fishing rather than complex settings.

Powering On and Sonar Tuning:

Simply press the power button to turn on the unit. The HOOK2 7X features auto-tuning sonar, which automatically adjusts settings for the best possible image, removing the need for manual adjustments.

Understanding Sonar Views:

Your HOOK2 7X provides two primary sonar views:

• CHIRP Sonar: Displays traditional fish arches and bottom composition with excellent target separation. The wide-angle cone provides extensive coverage.

Figure 3: Example of CHIRP sonar display showing fish arches and bottom structure.
• DownScan Sonar: Provides picture-like images of fish and structure directly below your boat, making it easier to identify targets.


Figure 4: Example of DownScan sonar display showing detailed underwater structure.

GPS Plotter Navigation:

The integrated GPS plotter allows for basic navigation. You can:

• Add and save waypoints for your favorite fishing spots or points of interest.
• Follow trails to retrace your path or navigate to previously visited locations.
• Utilize the pre-loaded base map for general orientation. Note that this model does not include detailed mapping charts, but upgrade options may be available separately.

The unit features phone-like menus for easy navigation through different screens and settings. Consult the User Guide for detailed instructions on specific menu functions and advanced settings.

4. Maintenance

Regular maintenance ensures the longevity and optimal performance of your HOOK2 7X fish finder.

• Cleaning: Wipe the screen and unit exterior with a soft, damp cloth. Avoid abrasive cleaners or solvents.
• Transducer Care: Periodically inspect the transducer for marine growth or damage. Clean gently with water and a soft brush if necessary. Ensure the transducer face is free of obstructions for accurate readings.
• Connections: Check all cable connections for corrosion or looseness, especially after prolonged use in marine environments.
• Storage: When not in use for extended periods, store the unit in a dry, cool place, protected from direct sunlight and extreme temperatures.

5. Troubleshooting

If you encounter issues with your HOOK2 7X, refer to the following common troubleshooting steps:

• Unit Not Powering On:
  • Verify power cable connections are secure at both the unit and the power source.
  • Check the boat's fuse panel for a blown fuse.
  • Ensure the battery has sufficient charge.
• No Sonar/Depth Reading:
  • Confirm the transducer cable is securely connected to the unit.
  • Check for obstructions or marine growth on the transducer face.
  • Ensure the transducer is properly submerged in water.
  • Verify that the sonar mode is active and not paused.
• GPS Not Acquiring Signal/No Maps:
  • Ensure the unit has a clear view of the sky for GPS signal acquisition.
  • Remember that this model provides a GPS plotter with basic navigation and does not include detailed mapping charts by default.
• Screen Display Issues (e.g., lines, distorted image):
  • Check for loose transducer connections.
  • Ensure the unit's software is up to date (refer to Lowrance support website).
  • Adjust sensitivity or range settings if the image is too cluttered or faint.

For more in-depth troubleshooting or issues not covered here, please consult the comprehensive User Guide or contact Lowrance customer support.

6. Specifications

7. Warranty and Support

For detailed warranty information and technical support, please refer to the official Lowrance resources.

• User Guide: For comprehensive operational details and advanced features, download the Official User Guide (PDF).
• Installation Manual: For detailed installation instructions, refer to the Installation Manual (PDF).
• Manufacturer Support: Visit the official Lowrance website or contact their customer service for further assistance, software updates, and warranty claims.