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Overview of the Fishfinder 90/140 owner's manual structure.
Defines safety terms like Warning and Caution used in the manual.
How to register your Garmin Fishfinder 90/140 online.
Support contact information for Garmin Fishfinder units.
Critical safety warnings and compliance notices for the Fishfinder.
Basic operation and customization of your Fishfinder 90/140.
Sonar beam coverage explanation for Fishfinder transducers.
How to interpret sonar data on the Fishfinder display.
Learn Fishfinder features using the built-in simulator.
Contents of the Garmin Fishfinder 90/140 installation package.
Guide to assembling and mounting the Fishfinder transducer.
Instructions for transom-mounting the sonar transducer.
How to mount the Fishfinder unit and its bracket.
Connecting the Fishfinder's power and transducer wiring.
Testing the transducer installation in water for proper operation.
Turning the Fishfinder on/off and adjusting screen brightness.
Navigating the Fishfinder's Main Menu for settings.
Configuring alarms, units, and system settings on your Fishfinder.
Fish display, sonar beam angle, and bottom detail settings.
Auto Gain, Number display, Language, and Beeper settings.
Technical specifications for the Fishfinder 90 and 140 models.
List of optional accessories for your Garmin Fishfinder.
Maintenance, cleaning, storage, and water resistance of the Fishfinder.
Legal agreement for the Fishfinder's embedded software.
Garmin Fishfinder product warranty terms and conditions.
Fishfinder 90/140 compliance with EU directives.
Provide feedback on the Fishfinder manual via survey.
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