Fishfinder 90/140 Owner’s Manual iiiINTRODUCTIONTABLE OF CONTENTSIntroduction.............................................................. iProduct Registration ...................................................iContact Garmin ...........................................................iCaring for the Fishfinder ...........................................iiCleaning the Case ...........................................................iiCleaning the Screen .........................................................iiStorage .............................................................................iiWater Immersion .............................................................iiWarning ......................................................................ivGetting Started........................................................ 1Understanding Sonar .................................................1Understanding the Fishfinder Screen ............................... 1Understanding Transducer Coverage............................... 2Using Simulator Mode ...............................................3Installing Your Fishfinder ...................................... 4Installing the Transducer ...........................................5Assembling the Transducer ............................................ 5Mounting the Transducer on a Trolling Motor ................ 5Mounting the Transducer on a Transom .......................... 6Installing the Fishfinder Unit .....................................9Selecting a Fishfinder Location ....................................... 9Mounting the Bracket Assembly ..................................... 9Installing the Unit on the Mount Bracket ...................... 10Installing the Wiring Harness ..................................10Testing the Transom Mount Installation .................11Operating Your Fishfinder ................................... 12Understanding Basic Functions .............................12Using the Main Menu ...............................................13Options and Settings ...................................................... 13Using the Setup Menu ..............................................14Options and Settings ...................................................... 14Appendix ............................................................... 17Specifications ...........................................................17Fishfinder 90 .................................................................. 17Fishfinder 140 ................................................................ 17Fishfinder 90 and Fishfinder 140 ................................... 17Optional Accessories ...............................................17Software License Agreement ..................................18Limited Warranty ......................................................18Index ...................................................................... 20