Garmin Fishfinder 80 Manuals

11 pdf manual(s) Garmin Fishfinder 80 for free download (Document Types: Installation instructions, User newsletter, Quick reference manual)

Garmin Fishfinder 80 Installation instructions [PDF] (3 pages)

  • Identifier: id-333922
  • Brand: Garmin
  • Device: Fishfinder 80 Fish Finder
  • Type: PDF
  • Key Aspects: Environmental Factors and Restrictions, System Limitations and Considerations, Product Performance Metrics
  • UPD Date: 29.03.2026
  • Source File: 299900.pdf
  • Pages: 3
  • Description: Operation guide for the Garmin Fishfinder 80.
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Flush Mount Installation Instructions Contents: Mounting Hardware: A - Foam Rubber Pads (2) B - M4x40mm Hew Head Screws (4) C - M4 Hex Nuts (4) D - Reusable Cable Tie (1) E - Metal Retaining Brackets (2) Please read through these instructions thoroughly before attempting installation. Make sure you completely understand these instructions before you begin. When in doubt, seek professional assistance. Be sure the cables will reach the unit and transducer location before beginning installation. Please check the packing list above. If you are missing any items, please contact your Garmin dealer. Be sure to wear safety goggles and dusk mask when drill- ing and cutting. Installing the Flush Mount Pocket 1. Using the supplied Mounting Template locate a suitable mounting location and tape the template in place. Be sure to check behind the installation area to avoid cutting or drilling into wiring, cables, etc. 2. Drill a 3/8” hole at the location in di cat ed on the template as a starting point, then using the Jig Saw, cut the panel along the bold line. Be sure that your initial cut does not go outside the line that in di cates the inside edge of the pocket. (Figure 1) 3. Using a file or sandpaper, remove any burrs from the open ing. Test fit the Flush Mount Pocket and make any ad just ments to correct the fit. 4. Install the two Foam Rubber Pads in the pocket at the locations indicated in Figure 2. To install the pads, peel the lining off of the back and install with the sticky side against the pocket. 5. Insert the pocket in the panel (The Garmin logo should be positioned at the top.) Install a M4 Hex Head Screw through the pocket and the corresponding hole in the Metal Retaining Bracket. Start a 4mm Hex Nut on the screw. Repeat the process until all 4 nuts are started (Figure 3). Tighten the M4 nuts using a 7mm wrench or socket. If operating in a high vibration environment it is recommended that you use a thread locking compound on the M4 Hex Head Screws. 6. Secure the cable to the rectangular slot on the left side of the Flush Mount Pocket or one of the metal retaining brack ets with the wire tie provided in the kit. Leave approximately 18” of cable extending through the pocket to aid in the installation and removal of the unit. Figure 1 Flush Mount Pocket: Mounts to the bulkhead and retains the unit Figure 2 Rubber Pad Location M4 Machine Nut Metal Retaining Bracket Boat Panel M45x40mm Hex Head Tool List (Not Included) Figure 3 Jig Saw Phillips Screwdriver 7mm Wrench Drill and 3/8’ Drill Bit Masking Tape Thread Locking Compound — (Optional) Safety Goggles and Dust Mask for drilling E A B C D Mounting Pocket Side View Wire Tie Slot CUT ALONG BOLD LINE CUT ALONG BOLD LINE TRIM ALONG DASHED LINE 3/8" DRILL A HOLE FOR A PLACE TO BEGIN CUTTING INSIDE EDGE OF POCKET

Garmin Fishfinder 80 User newsletter [PDF] (6 pages)

  • Identifier: id-333786
  • Brand: Garmin
  • Device: Fishfinder 80 Fish Finder
  • Type: PDF
  • Key Aspects: Warranty and Service Information, Basic Configuration Guidelines, Storage and Care Recommendations
  • UPD Date: 20.07.2026
  • Source File: 299757.pdf
  • Pages: 6
  • Description: Device operation guide for the Garmin Fishfinder 80.
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marketing memo Garmin USA, Inc. 1200 East 151st Street Olathe, Kansas 66062 PH: 913/397.8200 Fax: 913/397.8282 GNS 480/CNX80 User Newsletter Seventh Edition 12/20/05 Paul Damschen, GNS 480/CNX80 Certification Manager In this special edition for the holidays we want to briefly discuss the new features of software v2.1 and the navigation database upgrade. New Features in Software Version 2.1 In this edition we are going to briefly discuss the changes in software version 2.1. This new version will correct some minor software issues as well as add a new interface feature. Additional features are planned in future software upgrades, and I encourage owners and installers to continue providing feedback on the features desired. The first feature added is the interface to the Pilatus PC-12 fuel flow computer. This will allow the GNS 480 to interface to the PC-12 fuel computer and display the data being transmitted from that system in the user selectable fields in the “blue block” on map pages 2, 3, and 4. The second enhancement involves both a minor software change and a functional change to accommodate the electronic database changes from Jeppesen. As many of you have noted, the RNAV approaches have proliferated at a substantial rate. There are many LPV approaches now and many approaches in the GNS 480 have either LNAV/VNAV or LNAV with advisory vertical guidance available (annunciated as LNAV/VNAV). The current software (v2.0) has a limitation for 255 LPV approaches. This limitation will be removed in v2.1 and all WAAS approaches will then be supported. Database Upgrade for Multiple Approaches to the Same Runway There is a database change and upgrade which will be automatically inserted into your databases from Jeppesen in the near term. This will provide the GNS 480 with the ability to fly different approaches of the same type (i.e. RNAV) to the same runway. The FAA has and is continuing to develop numerous RNAV approaches to the same runway as a part of the increased use of GPS for primary navigation and approach. These are indicated in Jeppesen paper charts as either RNAV Y or Z approaches. The Z approaches have vertical guidance associated with them, either to LNAV/VNAV minimums or LPV minimums. Y approaches are non-precision and may or may not support advisory vertical guidance. In this example, the Y approach does, and is indicated by the LNAV/VNAV shown in the approach title. Coupled with the multiple RNAV approaches to the same runway, you should be aware that the Y and Z approaches differ in some locations. In many situations they are a direct overlay of each other with identical waypoints, but not in all cases. Consider the RNAV approaches to runway 21 at Altoona, PA.

Garmin Fishfinder 80 Quick reference manual [PDF] (6 pages)

  • Identifier: id-333919
  • Brand: Garmin
  • Device: Fishfinder 80 Fish Finder
  • Type: PDF
  • Key Aspects: End-of-Life Handling and Disposal, Control Panel and Interface Navigation, Step-by-Step Assembly Procedures
  • UPD Date: 31.08.2026
  • Source File: 299897.pdf
  • Pages: 6
  • Description: User guidebook for the Garmin Fishfinder 80.
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Apollo CNX80 Quick Reference Guide Turn Knob to change MHz. Turn Knob to change kHz. Press for Menu items. Press to view levels. Press to view frequencies. 1. Turn knob to highlight. 2. Press or Press to view and edit levels. Press 1. Turn and knobs to choose name & frequency. 2. Press to save. Press to activate auto squelch. Press to monitor Standby frequency. Press to recall (Recent) stored frequencies. Turn the Knob to select frequencies. Press to view list of User created frequencies. Press to insert the Emergency frequency into Standby. Press or Press to toggle Active & Standby. Press again to return to previous view. Large Small Menu/Enter Signal Weather LARGE <-SBY <-A-> Audio Save Chnl. Large Small Menu/Enter SQ MON RCL Large User Emrgncy <-SBY <-A->. <-> COM Comm Radio (COM) Press COM Turn Knob to change MHz. Turn Knob to change kHz. Press for Menu items. Press to enter calibration info. 1. Turn and knobs to modify calibration info. 2. Press to save. Press to view the bearing TO/From the VOR or Ident. Press to view or edit levels. Press 1. Turn and knobs to choose name & frequency. 2. Press to save. Press to toggle Nav Audio - ID/Voice. Press to monitor Standby frequency. Press to recall (Recent) stored frequencies. Turn the Knob to select frequencies. Press to view list of User created frequencies. Press (Standby) or (Active). Press to toggle Active & Standby. Press again to return to previous view. Large Small Menu/Enter Test Log Large Small Menu/Enter ID/TO/FR Audio Save Chnl Large Small Menu/Enter ID MON RCL Large User <-SBY <-A-> <-> VOR VOR/ILS Radio (VOR) Press VOR Press VOR Change Ident Large Small Menu/Enter. CRSR 0 7 Menu/Enter Emrgncy Menu/Enter VFR TrgrSpd Large Small Menu/Enter 1. Turn Knob to highlight numbers. 2. Turn Knob to change numbers. 3. Automatically saved after selecting 4th number or press or 1. Press knob in. 2. Press - numbers in order desired. Press to view options. Press then to insert 7700 Squawk code. Press to insert 1200 Squawk code. Press to select Trigger Speed to automatically activate transponder when in Auto Mode. 1. Turn and knob to edit speed. 2. Press to save. Remote Transponder (XPDR) Press XPDR                                                                                         

Garmin Fishfinder 80 Data list [PDF] (7 pages)

  • Identifier: id-333912
  • Brand: Garmin
  • Device: Fishfinder 80 Fish Finder
  • Type: PDF
  • Key Aspects: Environmental Factors and Restrictions, Component Longevity Optimization, Product Performance Metrics
  • UPD Date: 28.08.2026
  • Source File: 299889.pdf
  • Pages: 7
  • Description: Advanced user manual for the Garmin Fishfinder 80.
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Apollo CNX80 STC Master Data List Garmin AT 2345 Turner Rd SE 27 October 2003 Salem, OR 97302 Part #: 560-0987-00 Rev E  Copyright 2003 Garmin AT, Inc. All Rights Reserved Page 1 of 7 APOLLO is a registered trademark of Garmin AT, Inc. Garmin ATTM is a trademark of Garmin Ltd. or its subsidiaries. Printed in the USA Apollo CNX80 Master Data List Part Number: 560-0987-00 Document Revision: E 27 October 2003 Garmin AT, Inc. 2345 Turner Rd SE Salem, OR 97302 USA Phone (503) 581-8101 FAX (503) 364-2138

Garmin Fishfinder 80 User newsletter [PDF] (6 pages)

  • Identifier: id-333920
  • Brand: Garmin
  • Device: Fishfinder 80 Fish Finder
  • Type: PDF
  • Key Aspects: Safety Recommendations and Warnings, Error Code Explanations, Efficiency and Calibration Tips
  • UPD Date: 04.06.2026
  • Source File: 299898.pdf
  • Pages: 6
  • Description: Instruction manual for the Garmin Fishfinder 80.
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CNX80 User Newsletter First Edition for CNX80 V1.0 software 9/10/03 In this edition: 1. Flight Planning and Multiple Approaches During Training 2. SUSPend Mode 3. What is a Discontinuity? 4. Intercepting an Airway 5. Roll Steering Vs. Deviation only autopilots 6. V2.0 Upgrades and LPV approaches CNX80 Flight Planning Some basic issues have come up in flight planning that are addressed in the Computer Based Training (CBT) materials you have on your owner’s CD. However, they bear repeating here in order to emphasize the concept of operation. Changing a Destination The CNX80 needs to know what the Origin Airport is in order to select the departure SID. It also needs to know the Destination airport in order to select the appropriate STAR or Instrument Approach at the Destination airport. If you are training and bouncing from airport to airport shooting approaches, then you must change the Destination airport in the CNX80. This may be accomplished in a number of ways: Method A 1. Select the flight plan page and edit mode. 2. Highlight the destination airport (if you have an approach selected you will not see the destination airport, first highlight the approach and delete it using the CLR key.) 3. Select Modify 4. Choose the new Destination airport and press Enter. Garmin AT Inc 2345 Turner Road SE Salem, Oregon 97302

Garmin Fishfinder 80 User newsletter [PDF] (5 pages)

  • Identifier: id-333789
  • Brand: Garmin
  • Device: Fishfinder 80 Fish Finder
  • Type: PDF
  • Key Aspects: Initial Startup Checklist, Common Issue Diagnostic Flows, Critical Operational Precautions
  • UPD Date: 20.08.2026
  • Source File: 299760.pdf
  • Pages: 5
  • Description: General instruction manual for the Garmin Fishfinder 80.
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marketing memo Garmin USA, Inc. 1200 East 151st Street Olathe, Kansas 66062 PH: 913/397.8200 Fax: 913/397.8282 GNS 480/CNX80 User Newsletter Sixth Edition 12/2/04 Paul Damschen, GNS 480/CNX80 Certification Manager In this special edition for the holidays: 1. CNX80 vs. GNS 480 2. Determining availability of vertical guidance on approaches 3. WAAS Coverage Increases 4. GTX 32/33 STC 5. WAAS and RNP GNS 480 vs. the CNX80 We’ve had several people question the new name of the CNX80 and thought they needed to upgrade to the GNS 480 for future support and growth capability. Just to emphasize and clarify: the GNS 480 is identical to the CNX80 with the exception of the bezel and the Garmin logo and model number on it. All STC documentation and future system upgrades will be applicable to both systems. Vertical Approaches and the GNS 480 A substantial percentage of version 2.0 CNX80 upgrades have taken place and are going into service as of this writing. Many new GNS 480’s have been placed into service in the last few months as well. The response has been very positive from customers and industry groups with the implementation of thousands of vertical guidance approaches and other new features found in version 2.0. We believe this will add a high degree of safety when flying instrument approaches, as you will be able to have vertical guidance and avoid multiple step downs. In general, you should find it the exception to the rule to not have vertical guidance during a GPS approach while in the U.S. with WAAS corrections available. As of this writing about 60% of the CNX80 population has completed upgrade to v2.0 and are back in the hands of customers. When the unit comes in we also complete the rework of the display backlight transformer at the same time. The initial workload has been reduced quite a bit and if you had concerns about getting your unit returned in a timely fashion due to the initial crush of people getting their systems upgraded, now is a good time to do it. We have also discovered the advantages of having an LPV approach here at our Salem facility. Our localizer failed a couple of weeks ago during a period of time when we had a lot of stagnant air in the Willamette Valley, with the associated low visibility and fog problems that come with this kind of weather system. With only a single ILS for precision approaches here, most traffic was unable to make it into Salem with only a non-precision approach. Only aircraft equipped with the GNS 480 had the ability to fly the LPV precision approach and make it into Salem during those days when the localizer was out of service and the RVR in the tank. We don’t know how quickly navaids get fixed in your part of the country, but in general we’ve noticed it takes awhile around here, especially at secondary airports. Having WAAS GPS provides GNS 480/CNX80 pilot’s with primary navigation and a degree of autonomy from ground based navaids not experienced in aviation before now.

Garmin Fishfinder 80 Supplemental flight manual [PDF] (10 pages)

  • Identifier: id-333784
  • Brand: Garmin
  • Device: Fishfinder 80 Fish Finder
  • Type: PDF
  • Key Aspects: Component Overview and Descriptions, Technical Data and Parameters, Common Issue Diagnostic Flows
  • UPD Date: 25.07.2026
  • Source File: 299755.pdf
  • Pages: 10
  • Description: Setup instructions for the Garmin Fishfinder 80.

Garmin Fishfinder 80 Supplemental flight manual [PDF] (7 pages)

  • Identifier: id-333909
  • Brand: Garmin
  • Device: Fishfinder 80 Fish Finder
  • Type: PDF
  • Key Aspects: Step-by-Step Assembly Procedures, Hardware Verification Checklists, Common Issue Diagnostic Flows
  • UPD Date: 23.08.2026
  • Source File: 299886.pdf
  • Pages: 7
  • Description: Comprehensive setup guide for the Garmin Fishfinder 80.

Garmin Fishfinder 80 Pilot's manual [PDF] (50 pages)

  • Identifier: id-333907
  • Brand: Garmin
  • Device: Fishfinder 80 Fish Finder
  • Type: PDF
  • Key Aspects: Basic Configuration Guidelines, Control Panel and Interface Navigation, Initial Startup Checklist
  • UPD Date: 13.08.2026
  • Source File: 299883.pdf
  • Pages: 50
  • Description: Full technical guide for the Garmin Fishfinder 80.

Garmin Fishfinder 80 Installation instructions [PDF] (2 pages)

  • Identifier: id-333925
  • Brand: Garmin
  • Device: Fishfinder 80 Fish Finder
  • Type: PDF
  • Key Aspects: Best Practices for Everyday Use, Additional Modules and Accessories Guide, Storage and Care Recommendations
  • UPD Date: 08.09.2026
  • Source File: 299903.pdf
  • Pages: 2
  • Description: Product operation manual for the Garmin Fishfinder 80.
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Installation Instructions Please read through these instructions thoroughly before attempting installation. Make sure you 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 before beginning installation. The Garmin Fishfi nder 80 hardware allows for installation on either the transom or trolling motor. Please check the packing list below. If you are missing any items, please contact your Garmin dealer. Fishfi nder 80 Selecting a Transom Mount Location For 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 as possible. DO NOT cut the transducer lead, this will void your warranty and may cause the unit to not operate at optimal levels. DO NOT mount the transducer behind strakes, rivet lines, struts, fi ttings, water intake, discharge ports, eroding paint, or anything that creates air bubbles or causes the water to become turbulent. It is important that the transducer be as close to the center line as possible in calm, non turbulent water for optimal performance. Avoid mounting the 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. On twin drive boats, mount the transducer between the drives if possible. Do not mount the transducer directly in the path of the prop. The transducer can cause cavitation that may degrade the boat’s performance and damage the prop. Testing the Transom Mount Installation This 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 Fishfi nder 80 will not function properly with the transducer out of the water. When you place your boat in the water CHECK FOR LEAKS around the screw holes that are below the water line. DO NOT leave your boat in the water for an extended period of time without checking for leaks. 1. Begin testing the installation at a slow speed. If the sonar appears to be working properly gradually increase the boat’s speed observing the sonar’s operation. If the sonar signal suddenly is lost or the bottom return is severely degraded, note the speed at which this occurs. 2. Return the boat to the speed the signal was lost. Make moderate turns in both directions and see if the signal improves. 3. If the signal strength improves while turning, adjust the transducer so that it extends 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 a different location. Mounting the Transducer On a Trolling Motor 1. Slide the large Cable Tie through slot on the Transducer Mount with the ridges of the band facing up until equal lengths extend on both sides of the mount. (Note: For cold 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 the front of the transducer pointed away from the trolling motor propeller. 4. Place the pointed end of Cable Tie through the fastener hole on the opposite end and pull through (you will hear clicks) until snug. 5. Position the trans duc er so that is will be parallel with the bottom when in use and make sure the Gasket is aligned properly. Pull the Cable Tie end until tight. Excess may be trimmed off if needed. Tighten the 10-32 locking nut until it touches the mounting bracket and then tighten 1/4 turn more (do not overtighten). 6. Route the 30’ (9 m) transducer cable using the supplied cable ties to secure the cable to the motor shaft. If desired, the forward-facing portion (except the Cable Tie pocket) of the Transducer Mount may be filled with sealant to avoid debris accumulation. Make sure the transducer is below water level when the boat is on plane at high speed. Apply marine sealant to all screw threads to prevent water from seeping into the transom. Mount the transducer parallel with the water line. Packing List: A - Fishfi nder 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) A C D E I J K L M N O P G F Q H R B (Cable not shown) Assembling the Transducer 1. Insert the Rubber Washer and Plastic Spacer in the transducer at the same time. DO NOT lubricate the Rubber Washer. 2. Route the cable towards the back and slide the transducer into the mounting bracket. 3. Place a 5 mm Flat Washer on the 10-32 x 1.75" screw and insert the screw through the Mounting Bracket, Spacer and Rubber Washer. 4. Place the remaining 5 mm Flat Washer on the exposed end and install the 10-32 Lock Nut finger tight. The transducer will be tightened further after installation on boat. Mounting the Transducer On a Transom Tool List (not included) - Drill, 3/8" Wrench or Socket, 5/32" and 1/8" Drill Bits, Masking Tape, #2 Phillips Screw Driver, Marine Sealant 1. Position the transom mount at the selected location, making sure the transducer is parallel with the water line. Mark the center locations of each hole on the transom mount. (see figures to the right) 2. Using the 5/32" bit, drill the pilot holes approximately 1" (25 mm) deep at the marked lo ca tions. To avoid drilling the holes too deep wrap a piece of tape around the bit 1" from the point of the bit. 3. Apply Marine Sealant to the 5 x 30 mm screws. Attach the transducer to the transom using the 5 x 30 mm screws. Adjust the transducer to extend beyond the bottom of the transom approximately 1/8" (3 mm) on fiberglass hulls or 3/8" (10 mm) on aluminum 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 then tighten 1/4 turn more (do not overtighten). 6. Place the first cable clamp on the transducer cable approximately one third of the distance 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 electrical interference. OK Level Drill Pilot Holes Here Vertical Bottom of Transom Align with transom bottom. Transducer should extend 1/8” below fiber- glass hulls or 3/8” below aluminum hulls. Keep Parallel With Water Line Installing the Unit On the Mounting Bracket 1. Align the slot on the back of the unit with the long mounting knob and slide in place. It may be necessary to adjust the long knob to spread the bracket arms apart. (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 as you turn the bracket.) 5. Tighten all knobs once the desired viewing angle is obtained. Unit Installation — Selecting a Proper Location Choose a location that provides optimal viewing while operating the vessel and allows 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 NOT mount 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 the connection/routing of the power cable. Mounting the Bracket Assembly Tool List (not included) - Drill, Screwdriver (Phillips or Standard), three #8 pan head machine bolts with matching nuts and washers and a 5/32” drill bit, OR three #8 pan head self-tapping screws and a 1/16” drill bit 1. Using the swivel base as a template, mark the location of the three holes which will 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 locations you marked. OR, If securing the base using self-tapping screws, drill 1/16” starter holes at the locations you marked. Starter holes should generally be no deeper than half the screw length. 3. Secure the swivel base with three bolts or screws. DO NOT OVERTIGHTEN. 4. Place the rest of the mount over the swivel base and secure with the short knob. Wiring Harness Installation The Fishfinder 80 comes with a wiring harness that connects the unit to power and the transducer with one easy-to-remove connection. If it is necessary to extend the power wires, 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 an unused holder on your current fuse block. If you are using the boat’s fuse block, remove the 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 exceed this 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 the connector and turn the lock ring counter-clockwise unit it stops. Unit Care Cleaning - Clean the unit housing using a cloth lightly dampened with a mild detergent solution 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, as permanent damage may result. Do not mount the transducer behind strakes, rivet lines, struts, fittings, water intakes or discharge ports. S

Garmin Fishfinder 80 Specification [PDF] (2 pages)

  • Identifier: id-958307
  • Brand: Garmin
  • Device: Fishfinder 80 Fish Finder
  • Type: PDF
  • Key Aspects: Routine Functionality Testing, Pre-Installation Safety Requirements, FAQ Section for Common Queries
  • UPD Date: 08.05.2026
  • Source File: 1200204.pdf
  • Pages: 2
  • Description: Official user handbook for the Garmin Fishfinder 80.
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Fishfinder 80 The Fishfinder 80 wraps simple operations and Garmin's exclusive fishfinder technology into this entry-level sonar. This unit even comes standard with temperature and an adjustable swivel mount so you can view the display from the console, then flip it around to use from the bow. With a black on white display, the Fishfinder 80 has one of the sharpest screens for the money. Another feature you won't find on other low-cost fishfinders — uninterrupted operation, meaning the sonar won't quit while you're changing settings. Easy to use, compact sonar

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