Garmin GPSMAP 421s Support and Manuals

Get Help and Manuals for this Garmin item

View All Support Options Below
Free Garmin GPSMAP 421s manuals!
Problems with Garmin GPSMAP 421s?

Ask a Question

Most Recent Garmin GPSMAP 421s Questions

Transfer The Images From Gpsmap Garmin 421s To My Laptop
Pls help me to learn how can I transfer the images from GPSMAP Garmin 421s to my
(Posted by stra35tos 3 years ago)
Garmin Gpsmap 521s
How to add points from coordinates
(Posted by tandreasg1 8 years ago)
Cable And Pransducer For Gpsmap 421s
I need cable and pransducer for gpsmap421s
(Posted by GAYDIAB 11 years ago)
How To Connect The Gpsmap 421 To A Standard Horizon Gx1600e Dsc Transceiver..?
Could you please provide me with info on how to connect the Garmin GPSMAP 421 to a Standard Horizon ...
(Posted by jbrinkbaumer 11 years ago)

Garmin GPSMAP 421s Videos

Garmin GPSMAP 421S & 521S
Duration: 12:24
Total Views: 23,264
The Dashboard Screens in the Garmin GPSMap 421S Marine Sounder with GPS City
Duration: 2:55
Total Views: 1,041
Garmin GPSMap 421s Video Manual - Communication Configuration
Duration: 3:02
Total Views: 7,359
Garmin GPSMap 421s Video Manual -Topography Mapping
Duration: 2:08
Total Views: 19,470

Popular Garmin GPSMAP 421s Manual Pages

Installation Instructions - Page 1

...: See the Important Safety and Product Information guide in Taiwan Install the transducer, if applicable (page 3). 4. Use this matrix to a NMEA 2000 network (optional, if applicable) (page 8). 6. Chartplotter GPSMAP 420/430/430x/440/440x/450 GPSMAP 520/525/530/535/540/545/550/555 GPSMAP 421/441/451 GPSMAP 431/531 GPSMAP 521/526/536/541/546/551/556 NMEA...
Installation Instructions - Page 9

... from 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...
Installation Instructions - Page 10

... Distances: Model Number GPSMAP 526/536/546/556 GPSMAP 421/431/441/451 GPSMAP 521/531/541/551 GPSMAP 420/430/440/450 GPSMAP 520/530.... Update Rate: 1/second, continuous GPS Accuracy: Position: To test the transom mount transducer installation: 1. GPSMAP 525/526/535/536/545/546/555/556 (s): 5.0 in . Temp. If the sonar signal suddenly is lost . Specifications Physical Specifications Size...
Installation Instructions - Page 11

... conditions. Route/WP information GNSS DOPs GNSS Sats in View Wind Data Compatible GPSMAP 400/500 series chartplotters are supported by the GPSMAP 525s/526s/535s/536s/545s/546s/555s/556s units only.) Dual Frequency, 500 W (RMS), 4,000 W (peak to NMEA 2000-Compatible Chartplotters): Receive 059392 059904 060928 126208 126464 126996 127250 127488 127489 127505 128259 128267...
Technical Reference for Garmin NMEA 2000 Products - Page 2

... Association. Garmin®, the Garmin logo, and GPSMAP® are trademarks of this manual or any revision hereto is subject to notify any storage medium, for current updates and supplemental information concerning the use and operation of Garmin Ltd. or its products and to make changes in the USA and other Garmin products. July 2010 Part Number 190...
Important Safety and Product Information - Page 4

.... Limited Warranty This Garmin product is required. Such repairs or replacement will , at its sole option, repair or replace any Garmin warranty service station. This warranty does not apply to: (i) cosmetic damage, such as scratches, nicks and dents; (ii) consumable parts, such as to repair or replace (with a new or newly-overhauled replacement product) the device or software or offer...
Owner's Manual - Page 2

... 397.8282 Garmin (Europe) Ltd. Except as expressly provided herein, no part of this manual onto a hard drive or other Garmin products. Information in the USA and other countries. Garmin hereby grants ... trademarks of Garmin Ltd. or its subsidiaries. or its products and to make changes in the United States and other countries. Garmin®, the Garmin logo, GPSMAP®, BlueChart...
Owner's Manual - Page 3

...: page 7. • Changing the Navigation Chart Settings: page 11. • Navigating to select an item, small arrows (>) appear in the text. GPSMAP 400/500 Series Owner's Manual  Introduction This manual includes information for the following products: GPSMAP® 421/421s GPSMAP 521/521s GPSMAP 551/551s GPSMAP 451/451s GPSMAP 526/526s GPSMAP 556/556s Tips and Shortcuts • Press...
Owner's Manual - Page 7

Unit Overview GPSMAP 526/556 Getting Started NMEA 2000® Power/Data External GPS antenna GPSMAP 421/451/ 521/551 Power/Data NMEA 2000® GPSMAP 400/500 Series Owner's Manual External GPS antenna Getting Started POWER/ BACKLIGHT RANGE (-/+) ROCKER MARK SELECT MENU HOME SD card slot GPSMAP 526 shown 
Owner's Manual - Page 13

...Mariner's Eye charts. This chart works well for either the USA shoreline or a specific...a GPSMAP 421, 521, or 526 (including "s" models), you use a BlueChart g2 Vision SD card. Using Charts Your chartplotter has ...supports Fishing charts. • Fishing Chart-provides a view of the Navigation chart at the same time. GPSMAP 400/500 Series Owner's Manual  The BlueChart g2 Vision Mariner...
Owner's Manual - Page 63

... Screen Use the Split Frequency screen (dual-frequency transducer only) to view the full sonar data from the graph and a zoomed in portion on the same screen. From the Home screen, select Sonar > Split Frequency. Depth, temperature, and speed Range Frequencies Split Frequency GPSMAP 400/500 Series Owner's Manual Zoomed depth scale Zoom level Transducer frequency Zoom window Range Split...
Owner's Manual - Page 66

...). Pause Sonar-Stops the scrolling of noise rejection. If the screen is cluttered, decrease the gain. 60 Frequency-when using a dual frequency transducer, select how the frequencies appear on all sonar screens, but does not change the Temp Log screen. Select the top slider bar to Manual), you want to continue scrolling. GPSMAP 400/500 Series Owner...
Owner's Manual - Page 73

Update Rate: once per second GPS Accuracy: Position: Acquisition Times: (Average acquisition times for a stationary receiver with a clear view of the sky) GPSMAP 421/421s GPSMAP 451/451s GPSMAP 521/521s GPSMAP 551/551s Warm*: Approximately 1 second Cold**: Approximately 38 seconds GPSMAP 526/526s GPSMAP 556/556s Warm*: Approximately 15 seconds Cold**: Approximately 45 seconds *Warm: your unit is...
Owner's Manual - Page 78

... to export or re-export the Software to human readable form the Software or any part thereof or create any country in violation of the export control laws of the United States of Garmin. GPSMAP 421/421s GPSMAP 451/451s GPSMAP 551/551s GPSMAP 521/521s GPSMAP 526/526s GPSMAP 556/556s To connect one of these chartplotter to an existing NMEA 2000...
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...

Garmin GPSMAP 421s Reviews

Do you have an experience with the Garmin GPSMAP 421s that you would like to share?
Earn 750 points for your review!
We have not received any reviews for Garmin yet.

Popular Garmin GPSMAP 421s Search Terms

The following terms are frequently used to search for Garmin GPSMAP 421s support:

Ask a New Question
Use the box below to post a new question about Garmin GPSMAP 421s.
Manuals / Documents
Download any of our Garmin GPSMAP 421s manuals for free!

We have the following 8 documents available for the Garmin GPSMAP 421s:
  • 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

Points & Prizes
  • You can earn points for nearly everything you do on HelpOwl.com
  • You can trade in those points for gift cards at leading retailers such as Amazon.com and Walmart
  • It's that simple!
See How it Works
Create a Free Account

Garmin Manuals

Find free Garmin GPSMAP 421s manuals and user guides available at ManualOwl.com. Try out our unique manual viewer allowing you to interact with manuals from directly within your browser!

Garmin Reviews

View thousands of Garmin GPSMAP 421s user reviews and customer ratings available at ReviewOwl.com.

Contact Information

Complete Garmin customer service contact information including steps to reach representatives, hours of operation, customer support links and more from ContactHelp.com.

Scoreboard Ratings

See detailed Garmin customer service rankings, employee comments and much more from our sister site.