Garmin Fishfinder 250 Owner's Manual

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7Do 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 speedApply marine sealant to allscrew threads to prevent waterfrom seeping into the transom.Mount the transducer cable coverwell above the waterline.Transducer should extend 1/8" (3mm) belowfiberglass hull or 3/8" (10mm) below aluminum hullOKMount the transducer parallel with the bottom.USS JayhawkInstalling the TransducerProper transducer installation is key to getting the best performance from your new unit. If the trans-ducer lead is too short, extension cables are available from your Garmin dealer. Coil and secure any excesscable. DO NOT cut the transducer lead or any part of the transducer cable, as this will void your warranty.The cable cannot be spliced and connected to any existing (Garmin or non-Garmin) transducer cables.Following are some tips and basic installation instructions for some popular transducers. Detailedinstallation instructions are provided in the transducer kits. Some transducers may need to beinstalled by a professional marine installer.Transom Mount InstallationTransom Mount Transducer(depth/temp)Connecting a Transducer to Multiple SensorsInstallation,DO NOT mount the transducer behind strakes,struts, fittings, water intake or discharge ports,or anything that creates air bubbles or causes thewater to become turbulent. It is important that thetransducer be in clean (non-turbulent) water foroptimal performance.Mounting the TransducerSpeed Temp TransducerTo Unit