Fishfinder 250C Owner's Manual Brandname: Garmin Category: Sonar Total Pages: 40 Table of contents Introduction3Introduction4Introduction5PackingList6SelectingATransducer7Introduction8Installation9Installation10Installation11Installation12Installation13Interfacing14InstallingTheTransducer15Installation16TestingTheInstallation17UsingTheKeypad18UnitOperation19UsingTheAdjustmentMenu20UnitOperation21UnitOperation22PausingTheSonarPage23MainMenu24ToolsTab25TempTemperatureTab26AlarmsTab27SystemTab28SonarTab29TimeTab30UnderstandingSonar31OnTheWater32UnderstandingTheGraph33Whiteline34PhysicalSpeciCations35AppendixB36AppendixC37AppendixC38