Fishfinder 400C Owner’s Manual IndexIndexAA-scope 26accessories 27advanced settings 25alarms 21, 28battery 21deep water 21drift 21fish 21shallow water 21water temp 21arches 22Bbacklightadjusting 15basic operation 15beam 25bottom lock 25bracket assembly 2Ccalibrate the speed sensor 24CANet 12, 27caring for the fishfinder iiicleaningthe case iiithe screen iiiclutter. See surface noiseconfigure screen 20contact garmin iiicustomizingsonar settings 22system settings 23transducer settings 23units of measure 24DDeclaration of Conformity 30depth 24line 26range 25span 26zoom 26display settingschanging 21distance 24duration 26Ffactory settingsrestoring 23fish symbols 22flasher 18, 26flush mount 2, 27frequency 25full screen 17fuse 10, 27Ggain 25GPS, wiring to a 12HHOME key 15Home screen 16Iimportant information ivinput voltage 10installing 1selecting a location 1testing 13the fishfinder on the mountingbracket 3the mount 2the transducer 4on a transom 6on a trolling motor 5shoot-thru-hull 8the wiring harness 10to a Garmin CANet 12interfacing with NMEA 12Kkeel offset 23adjusting 24keypadusing 15Llanguagechanging 23LCD screen 1limited warranty 29location for shoot-thru-hull installa-tion 9location for the fishfinder 1MMENU key 15messages 28mountingbracket 3bracket assembly 2transducer on a transom 7transducer on a trolling motor 5NNMEA 12NMEA deviceconnecting to 12noise. See surface noisenumbers 22numbers screen 19Oodometerresetting 26optional accessories 27