iv Fishfinder 90/140 Owner’s ManualIntroductionTable of ContentsIntroduction............................................................. iiiAbout This Manual ...........................................................iiiManual Conventions ........................................................iiiProduct Registration ........................................................ vContact Garmin ................................................................ vWarning ........................................................................... viGetting Started......................................................... 1Understanding the Fishfinder ........................................... 1Using Simulator Mode...................................................... 4Installing Your Fishfinder ....................................... 5Installing the Transducer .................................................. 6Installing the Fishfinder Unit........................................... 10Installing the Wiring Harness ......................................... 12Testing the Transom Mount Installation ......................... 13Operating Your Fishfinder .................................... 14Understanding Basic Functions ..................................... 14Using the Main Menu ..................................................... 15Using the Setup Menu ................................................... 16Appendix ................................................................ 19Specifications ................................................................. 19Optional Accessories ..................................................... 19Caring for the Fishfinder ................................................ 19Software License Agreement ......................................... 21Limited Warranty ............................................................ 21Declaration of Conformity (DoC) .................................... 23Index ....................................................................... 24190-00582-10_0A.indd 4 12/2/2011 3:08:55 PM