User manual GARMIN FISHFINDER 300C INSTALLATION INSTRUCTIONS

[. . . ] · Is strong enough to support the weight of the Fishfinder 300C and protect it from excessive vibration or shock. · Allow room for the routing and connection of the cables. There should be at least a 3-inch (8 cm) clearance behind the case. DO NOT mount the Fishfinder 300C in an area that is exposed to extreme temperature conditions. NOTE: The temperature range for the Fishfinder 300C is from 5°F to 131°F (from -15°C to 55°C). [. . . ] Cutting the transducer cable voids your warranty. The cable cannot be spliced and connected to any existing (Garmin or non-Garmin) transducer cables. If the transducer lead is too short, extension cables are available from your Garmin dealer. Coil and secure any excess cable. Assembling the Transducer To assemble the transducer: 1. Inserttherubberwasherandtheplasticspacerintothetransduceratthesametime. DONOTlubricatetherubberwasher. Routethecabletowardthebackofthetransducer. Slidethetransducerintothetransducermount. 3. Placethe5mmflatwasheronthe10-32×1. 75"screw, andinsertthescrewthroughthetransducermount, thespacer, andtherubber washer. 4. Placetheremaining5mmflatwasherontheexposedend. Installthe10-32locknutfingertight. Retightenthetransducerafterinstallationon theboat. Cable-tie slot Back of the transducer Fishfinder 300C Installation Instructions 3 Mounting the Transducer on a Trolling Motor To mount the transducer on a trolling motor: 1. Slidethelargecabletiethroughtheslotonthetransducermount, withtheridgesofthecabletiefacingup, untilequallengthsofcabletie extendonbothsidesofthemount. NOTE: For cold water, or heavy timber or debris areas, a metal 4­5" (100­130 mm) worm-gear clamp is recommended. Positionthemountgasketonthecurvedtopofthetransducermount. 3. Placethetransducerassemblyagainstthemotorbodyofthetrollingmotor, withthefrontofthetransducerpointedawayfromthe trolling-motorpropeller. 4. Wrapthetwoendsofthecabletiearoundthemotorbody. Placethepointedendofthecabletiethroughthefastenerholeontheopposite endandpullitthroughuntilitissnugbutnottight. (Thecabletieclickswhenyoupullit. ) 5. Positionthetransducersothatitisparallelwiththebottomwheninuse, andmakesurethegasketisalignedproperly. Pullthecable-tie enduntiltight. Trimofftheexcessifnecessary. Tightenthe10-32lockingnutuntilittouchesthemountingbracket, andthentighten1/4turn more. (Donotovertighten. ) 6. Routethe30-foot(9m)transducercableusingthesuppliedcabletiestosecurethecabletothemotorshaft. Youcanfilltheforward-facing portion(exceptthecable-tiepocket)ofthetransducermountwithsealanttoavoidaccumulatingdebris. Cable tie Front of the transducer Mounting the Transducer on a Transom · · · · · When selecting a transom-mount location, consider the following for optimal performance: For your sonar to operate properly, the transducer must be located in calm water. Mount the transducer as close to the center of the boat as possible. (This voids your warranty. ) DO NOT mount the transducer in locations where it might be jarred when launching, hauling, or storing. DO NOT mount the transducer in the path of the propeller on single-drive boats. The transducer can cause cavitation that can degrade the performance of the boat and damage the propeller. On twin-drive boats, mount the transducer between the drives, if possible. NOTE: DO NOT mount the transducer behind strakes, struts, fittings, water intake or discharge ports, or anything that creates air bubbles or causes the water to become turbulent. The transducer must be in clean (non-turbulent) water for optimal performance. 4 Fishfinder 300C Installation Instructions Apply marine sealant to all screw threads to prevent water from seeping into the transom. Mount the transducer cable cover well above the waterline. Transducer should extend 1/8" (3. 2 mm) below a fiberglass hull or 3/8" (9. 5 mm) below an aluminum hull. Ensure that the transducer is below water level when the boat is on plane at high speed. Mount the transducer parallel with the bottom. Do not mount the transducer directly in the path of the propeller. The transducer can cause cavitation that may degrade the boat performance and damage the propeller. Required Tools (not included)--drill, 3/8" wrench or socket, 5/32" (4 mm) and 1/8" (3. 2 mm) drill bits, masking tape, number 2 Phillips screwdriver, and marine sealant. To mount the transducer on a transom: 1. Positionthetransducermountattheselectedtransomlocation. Makesurethetransducerisparallelwiththewaterline. Markthecenter locationsofeachholeonthetransducermount. 2. Usinga5/32"(4mm)bit, drillthepilotholesapproximately1"(25mm)deepatthemarkedlocations. Toavoiddrillingtheholestoodeep, wrapapieceoftapearoundthebitat1"(25mm)fromthepointofthebit. [. . . ] Do not leave your boat in the water for an extended period of time without checking for leaks. To test the transom-mount transducer installation: 1. Begintestingtheinstallationataslowspeed. Ifthesonarappearstobeworkingproperly, graduallyincreaseboatspeedwhileobserving sonaroperation. Ifthesonarsignalissuddenlylost, orthebottomreturnisseverelydegraded, notethespeedatwhichthisoccurs. Returntheboattothespeedatwhichthesignalwaslost. Makemoderateturnsinbothdirectionstoseeifthesignalimproves. Ifthesignalstrengthimproveswhileturning, adjustthetransducersothatitextendsanother1/8"(3mm)belowthetransomoftheboat. It mighttakeseveraladjustmentstoeliminatethedegradation. 4. Ifthesignaldoesnotimprove, youmighthavetomovethetransducertoadifferentlocation. [. . . ]