Garmin 80 Installation Instructions Manual

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Installation InstructionsPlease read through these instructions thoroughly before attempting installation. Make sureyou completely understand these instructions before you begin. When in doubt, seek profes-sional assistance. Be sure the wiring harness will reach the unit and transducer location beforebeginning installation. The Garmin Fishfinder 80 hardware allows for installation on eitherthe transom or trolling motor. Please check the packing list below. If you are missing any items,please contact your Garmin dealer.Fishfinder 80Selecting a Transom Mount LocationFor your sonar to operate properly, the transducer has to be located in clean (non-turbulent) water. The transducer should be mounted as near the center of the boat aspossible.DO NOT cut the transducer lead, this will void your warranty and may cause theunit to not operate at optimal levels.DO NOT mount the transducer behind strakes, rivet lines, struts, fittings, waterintake, discharge ports, eroding paint, or anything that creates air bubbles or causes thewater to become turbulent. It is important that the transducer be as close to the centerline as possible in calm, non turbulent water for optimal performance. Avoid mountingthe transducer in locations where the boat may be supported during launching, haul-ing, trailering or storage.Mount the transducer away from the path of the prop on single drive boats. Ontwin drive boats, mount the transducer between the drives if possible. Do not mountthe transducer directly in the path of the prop. The transducer can cause cavitation thatmay degrade the boat’s performance and damage the prop.Testing the Transom Mount InstallationThis test is to be performed after the unit installation. See unit operating instruc-tions for additional use information. Since water is necessary to carry the sonar signal,the Fishfinder 80 will not function properly with the transducer out of the water. Whenyou place your boat in the water CHECK FOR LEAKS around the screw holes that arebelow the water line. DO NOT leave your boat in the water for an extended period oftime without checking for leaks.1. Begin testing the installation at a slow speed. If the sonar appears to be workingproperly gradually increase the boat’s speed observing the sonar’s operation. If thesonar signal suddenly is lost or the bottom return is severely degraded, note thespeed at which this occurs.2. Return the boat to the speed the signal was lost. Make moderate turns in bothdirections and see if the signal improves.3. If the signal strength improves while turning, adjust the transducer so that itextends another 1/8" below the transom of the boat. It may take several adjust-ments to eliminate the degradation.4. If the signal does not improve it may be necessary to move the transducer to adifferent location.Mounting the Transducer On a Trolling Motor1. Slide the large Cable Tie through slot on the Transducer Mount with the ridges ofthe band facing up until equal lengths extend on both sides of the mount. (Note: Forcold water or heavy timber/debris areas, a metal 4-5” worm gear clamp is recom-mended.)2. Position the Mount Gasket on the curved top of the Mount.3. Place the transducer assembly against the motor body of the trolling motor with thefront of the transducer pointed away from the trolling motor propeller.4. Place the pointed end of Cable Tie through the fastener hole on theopposite end and pull through (you will hear clicks) until snug.5. Position the transduc er so that is will be parallel with thebottom when in use and make sure the Gasket is alignedproperly. Pull the Cable Tie end until tight. Excess may betrimmed off if needed. Tighten the 10-32 locking nut untilit touches the mounting bracket and then tighten 1/4turn more (do not overtighten).6. Route the 30’ (9 m) transducer cable using thesupplied cable ties to secure the cable to themotor shaft. If desired, the forward-facingportion (except the Cable Tie pocket) ofthe Transducer Mount may be filled withsealant to avoid debris accumulation.Make sure the transducer is belowwater level when the boat is on planeat high speed.Apply marine sealant to all screwthreads to prevent water fromseeping into the transom.Mount the transducer parallel with thewater line.Packing List:A - Fishfinder 80 Sonar Unit (1)B - Swivel Mount Bracket (1)C - Swivel Base (1)D - Mounting Knobs- Short (1), Long (1)E - Mounting Knob Spacer (1)F - Transducer With Power Cable (1)G - Transducer Mount (1)H - Trolling Motor Mount Gasket (1)I - 5 mm Flat Washers (2)J - 5 x 30 mm Screws (2)K - 10-32 Lock Nut (1)L - 4 x 12 mm Screws (4)M - 10-32 x 1.75 Screw (1)N - 1/4” Cable Clamps (2)O - Plastic Spacer (1)P - 1/4” Rubber Washer (1)Q - Cable Tie, 5.6” (4)R - Cable Tie, 20” (1)S - Snap-Ring (1)ACDEIJKLMNOPGFQHRB(Cable not shown)Assembling the Transducer1. Insert the Rubber Washer and Plastic Spacerin the transducer at the same time. DO NOTlubricate the Rubber Washer.2. Route the cable towards the back andslide the transducer into the mounting bracket.3. Place a 5 mm Flat Washer on the 10-32 x1.75" screw and insert the screw throughthe Mounting Bracket, Spacer and RubberWasher.4. Place the remaining 5 mm Flat Washer onthe exposed end and install the 10-32Lock Nut finger tight. The transducer will betightened further after installation on boat.Mounting the Transducer On a TransomTool List (not included) - Drill, 3/8" Wrench or Socket, 5/32" and 1/8" Drill Bits,Masking Tape, #2 Phillips Screw Driver, Marine Sealant1. Position the transom mount at the selected location, making sure the transducer isparallel with the water line. Mark the center locations of each hole on the transommount. (see figures to the right)2. Using the 5/32" bit, drill the pilot holes approximately 1" (25 mm) deep at themarked loca tions. To avoid drilling the holes too deep wrap a piece of tape aroundthe bit 1" from the point of the bit.3. Apply Marine Sealant to the 5 x 30 mm screws. Attach the transducer to the transomusing the 5 x 30 mm screws. Adjust the transducer to extend beyond the bottomof the transom approximately 1/8" (3 mm) on fiberglass hulls or 3/8" (10 mm) onaluminum hulls. Adjust the transducer to be aligned parallel with the water.5. Tighten the 10-32 locking nut until it touches the mounting bracket and thentighten 1/4 turn more (do not overtighten).6. Place the first cable clamp on the transducer cable approximately one third of thedistance between the transducer and the top of the transom. Mark the location.Using a 1/8" bit, drill a pilot hole approximately 3/8" (10 mm) deep.7. Attach the cable clamp using a 4 x 12 mm screw. Coat the screw with marine seal-ant before installation. Repeat steps 6 and 7 using the other cable clamp.8. Route the transducer cable as needed to the sonar unit. DO NOT CUT THE CABLE.Try to avoid routing the cable with electrical wires or other sources of electricalinterference.OKLevelDrill Pilot Holes HereVerticalBottom of TransomAlign with transombottom. Transducer shouldextend 1/8” below fiber-glass hulls or 3/8” belowaluminum hulls.Keep Parallel With Water LineInstalling the Unit On the Mounting Bracket1. Align the slot on the back of the unit with the long mounting knob and slide inplace. It may be necessary to adjust the long knob to spread the bracket armsapart. (Turn counter-clockwise to widen the bracket arms, clockwise to tighten.)2. Adjust the unit angle and tighten the long mounting knob until snug.3. Tilt the unit by loosening the long knob on the right side of the bracket assembly.4. Rotate the entire bracket by twisting it left or right. (NOTE: You will hear clicks asyou turn the bracket.)5. Tighten all knobs once the desired viewing angle is obtained.Unit Installation — Selecting a Proper LocationChoose a location that provides optimal viewing while operating the vessel andallows easy access to the unit’s keypad. Select a mounting surface strong enough to sup-port the weight of the unit and protect it from excessive vibration or shock. DO NOTmount the bracket in a location where the unit will be exposed to extreme tempera-ture conditions. When installing the mounting bracket, be sure to allow room for theconnection/routing of the power cable.Mounting the Bracket AssemblyTool List (not included) - Drill, Screwdriver (Phillips or Standard), three #8 pan headmachine bolts with matching nuts and washers and a 5/32” drill bit, OR three #8 panhead self-tapping screws and a 1/16” drill bit1. Using the swivel base as a template, mark the location of the three holes whichwill be used to secure the bracket to the mounting surface.2. If securing the base with machine bolts, drill three 5/32” holes at the locationsyou marked. OR, If securing the base using self-tapping screws, drill 1/16” starterholes at the locations you marked. Starter holes shouldgenerally be no deeper than half the screw length.3. Secure the swivel base with three bolts or screws. DONOT OVERTIGHTEN.4. Place the rest of the mount over the swivel baseand secure with the short knob.Wiring Harness InstallationThe Fishfinder 80 comes with a wiring harness that connects the unit to power andthe transducer with one easy-to-remove connection. If it is necessary to extend the powerwires, use 22 AWG wire. DO NOT cut the transducer cable. This will void your warranty.If your boat has an electrical system, it may be possible to wire the unit directly to anunused holder on your current fuse block. If you are using the boat’s fuse block, removethe in-line fuse holder supplied with the unit. You may also wire the unit direct to the bat-tery. CAUTION: The Fishfinder 80 input voltage is 10-18 volts DC. DO NOT exceedthis voltage as this may damage the unit and void the warranty.Installing the Wiring Harness:1. Determine the polarity of the power source using a Test Light or Volt Meter.2. Install the Red (+) wire on the Positive fuse holder or battery terminal.3. Install the Black (-) wire on the Negative fuse holder or battery terminal.4. Install a 2 amp fuse in the fuse holder (fuse block only).5. Align the notches on the cable plug and back of the unit. Insert the cable into theconnector and turn the lock ring counter-clockwise unit it stops.Unit CareCleaning - Clean the unit housing using a cloth lightly dampened with a mild detergentsolution and then wipe dry. Avoid chemical cleaners and solvents that may damage plas-tic components. Do not apply cleaner to electrical contacts on the back of the unit.Storage - Do not store the unit where exposure to temperature extremes may occur, aspermanent damage may result.Do not mount the transducer behind strakes,rivet lines, struts, fittings, water intakes ordischarge ports.S

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