Garmin GPSMAP 421 Support and Manuals

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Most Recent Garmin GPSMAP 421 Questions

Garmin Gpsmap 421 Reset?
My 421 works great... but it's suddenly not leaving a "bread crumb" track, Can I do a factory reset ...
(Posted by doyleclifton 3 years ago)
I Have To Reset My Gps Map 421
all of a sudden my gps won't work. all I see is Garmin logo. what do I have to do to reset/open my g...
(Posted by hugodoenjar 3 years ago)
How To Download Depth Log In Garmin 421
I would like to download to an excel file a track file with coordenates and depth data
(Posted by buchereh 10 years ago)

Garmin GPSMAP 421 Videos

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Garmin GPSMap 421 Video Manual - Unit Preferences
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Popular Garmin GPSMAP 421 Manual Pages

Installation Instructions - Page 1

... guide in Taiwan Connect the cables to the following instructions. Before installing your chartplotter: 1 Select a mounting location (page 2). 2. notice: When drilling or cutting, always check the opposite side of a professional installer, or contact Garmin Product Support. If any parts are missing, contact your chartplotter. Test the installation (page 9). GPSMAP...
Installation Instructions - Page 9

... the sounder, the transducer must be used for all installations. ➋ ➌ ➌ ➊➎ GPSMAP 421, 441, and 451 ➌ ➊ GPSMAP 430x and 440x ➍ ➊ GPSMAP 420, 430, 431, 440, and 450 ➋ ➌ GPSMAP 530, 535, 540, and 545 ➋➊ ➊ Wiring harness ➋ NMEA 2000 ➌ External GPS antenna (sold separately) ➍...
Technical Reference for Garmin NMEA 2000 Products - Page 3

... provide Parameter Group Number (PGN) information for Garmin chartplotters and marine instruments as well as configuration and PGN information for the following products: ◦ GPSMAP® 4000/5000/6000/7000 Series chartplottersGPSMAP 700 Series chartplottersGPSMAP 4x1/5x1/5x6 Series chartplotters ◦ GMI™ 10 ◦ GPS 17x ◦ GFS™ 10 ◦ GRA...
Important Safety and Product Information - Page 4

... the Garmin service center in normal use. Such repairs or replacement will not replace missing components from the original retailer is required. Write the tracking number clearly on the country. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, WHICH MAY VARY FROM STATE TO STATE. or (v) damage to be used in materials or workmanship for shipping instructions and...
Owner's Manual - Page 11

... not track satellites in simulator mode.  Warning Do not try to navigate using simulator mode, because the GPS receiver is turned off for use indoors or for your chartplotter. Select Setup to access additional settings and configuration options. From the home screen, select Configure > System > System Information. The unit reboots and prompts you...
Owner's Manual - Page 12

..., Perspective 3D, Mariner's Eye 3D, Fish Eye 3D, and Split Navigation charts. Press HOME from any screen to return to another compatible Garmin unit or a computer (page 40). Use SD cards to transfer data such as a GPSMAP 526s) with a connected transducer to use an SD card to transfer waypoints from the chartplotter. Insert optional BlueChart...
Owner's Manual - Page 47

... other boats, your chartplotter: 1. DSC List-view the 100 most -recent call from the same boat, it replaces the first call in the Garmin\UserData folder. 2. ...GPSMAP 400/500 Series Owner's Manual 41 Copy the appropriate .ADM file on the card, and paste it into your chartplotter, select Information > User Data > Data Transfer > Replace From Card. From the Home screen on your chartplotter...
Owner's Manual - Page 53

... to view additional information. Select Display > Color Mode to configure unit settings. The Save to retrieve data about your boat over a short period of your chartplotter. A Garmin Product Support representative may ask you to use this feature to Card button is lost. • GPS-view GPS satellites. • Skyview-view the GPS satellite constellation. • WAAS/EGNOS-toggle...
Owner's Manual - Page 54

... trend. GPSMAP 400/500 Series Owner's Manual Configuring the Chartplotter Heading-sets the reference used in calculating heading information. • Auto Magnetic-automatically sets the magnetic declination for your location. • True-sets true north as the heading reference. • Grid-sets grid north as the heading reference (000º). • User Magnetic-allows you to set to Auto...
Owner's Manual - Page 67

... distress call. Digital Selective Calling (DSC) Digital Selective Calling Using the Chartplotter with DSC calls. The chartplotter can receive DSC distress and position information from your radio. NMEA 0183 NMEA 2000 Garmin NMEA Garmin NMEA VHF Radio VHF Radio 0183 VHF Radio 2000 VHF Radio X X X X X X X X X X X X X X X GPSMAP 400/500 Series Owner's Manual 61
Owner's Manual - Page 74

... sounded. You can read. remove and reinsert. Antenna Input is Shorted-a part of the specified distance range. Anchor Drag Alarm-you requested. 68 GPSMAP 400/500 Series Owner's Manual Battery Alarm-battery voltage has fallen below the value entered in your dealer or Garmin Product Support if the problem persists. remove and reinsert. Card Needed-Your unit...
Owner's Manual - Page 77

...is constructed of waypoints. GPSMAP 400/500 Series Owner's Manual 71 Waypoint Already Exists-you...SD card. Remove the SD card from the chartplotter and insert it to clean the lens using.... 2. From Windows Explorer, open the Garmin\scrn folder on the computer. Modify the...of high-quality materials and does not require user maintenance, except cleaning. Delete unwanted waypoints to ...
Owner's Manual - Page 78

... the structure, organization, and code of the Software are valuable trade secrets of Garmin and that the Software is the property of Garmin and is protected under the United States of supported NMEA 2000 PGN numbers, see the GPSMAP 400/500 Series Installation Instructions. NMEA 2000 The following GPSMAP 400 and GPSMAP 500 series chartplotters are NMEA 2000 certified and...
Owner's Manual - Page 79

... 52 collision 55 deep water 53 engine gauge 33 fish 53 fuel 53 GPS accuracy 52 navigation 52 off course 52 safe-zone 55 shallow water 53 ...17 mariner's eye 3D 15 navigation 7 settings 11 Clear User Data 39 collision alarm 55 colors, hazard 16 Color Scheme 60 Communications 50 Compass 31 compass rose 12 Compass Tape 9 contact information, Garmin iv ... 62 DST 48 GPSMAP 400/500 Series Owner's Manual 73
Owner's Manual - Page 81

... key 4 Serial Port setup 50 Service Points 11 settings alarms 52 chart 11 ...transducer dual frequency 60 transferring data 39, 40 True (north) 48 true wind 36 turn the unit off 2 Turn Transition 48 U unit ID number 5 units of measure 47 user data backing up 40 clearing 39 transferring 40 viewing 39 V Vehicle Icon 13 version (software) 47 VHF radio 61 GPSMAP 400/500 Series Owner's Manual...

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Manuals / Documents
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We have the following 8 documents available for the Garmin GPSMAP 421:
  • Owner's Manual
  • Important Safety and Product Information
  • Technical Reference for Garmin NMEA 2000 Products
  • Flush Mount Kit Instructions (Multilingual)
  • Installation Instructions
  • Flush Mount Template (Multilingual)
  • Quick Reference Guide
  • ML Declaration of Conformity

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