Garmin Fishfinder 100 BLUE Owner's Manual

Also see for Fishfinder 100 Blue: Specifications

2InstallationMounting the TransducerProper transducer installation is key to getting the best performancefrom your new unit. If the transducer lead is too short, extension cablesare available from you GARMIN dealer. DO NOT cut the transducer leador any part of the transducer cable, as this will void your warranty. Thecable cannot be spliced and connected to any existing (GARMIN or non-GARMIN) transducer cables.Following are some tips and basic installation instructions for theoptional dual frequency transducer and speed sensor. Detailed installationinstructions are provided in the transducer kits.Transom Mount InstallationDual Frequency Transom Mount Transducer (with depth/temp).DO NOT mount the transducer behind strakes,struts, fi ttings, water intake or discharge ports, oranything that creates air bubbles or causes thewater to become turbulent. It is important thatthe transducer be in calm, non-turbulent water foroptimal performance.Do not mount transducer directly in thepath of the prop. The transducer can causecavitation that may degrade the boat's performanceand damage the prop.Make sure that the transducer isbelow water level when the boatis on plane at high speedMount the transducer cable coverwell above the waterline.Transducer should extend 1/8" belowfiberglass hull or 3/8" below aluminum hullApply marine sealant to allscrew threads to prevent waterfrom seeping into the transom.Mount the transducer parallel with the bottom.OK