GMR 20/40 Installation and Operation Guide
2
The Garmin GMR 20/40 has no user-serviceable parts. Should you ever encounter a problem with your unit, please
take it to an authorized Garmin dealer or contact Garmin Customer Service for repairs.
Serial Number
Use this area to record the serial number (8-digit number located in the back of the unit) in case it is lost, stolen, needs service, or if you
need to contact Technical Support. Be sure to keep your original sales receipt in a safe place or attach a photocopy inside the manual.
Serial Number:
Welcome
Thank you for choosing the Garmin GMR 20/40. The GMR 20/40 utilizes the performance of Garmin radar and provides over-
lay and color information when combined with a marine Multi-Function Display (MFD). Please take a moment now to compare the
contents of this package with the packing list on page x of this manual. If any pieces are missing, please contact your Garmin dealer
immediately.
About This Manual
To get the most out of your new navigation system, take time to read this manual and learn the operating procedures for your unit
in detail.
Customer Service Product Registration
Help us better support you by completing our on-line registration today!
Have the serial number of your GMR 20/40 handy and connect to our Web site (www.garmin.com). Look for the Product Registra-
tion link on the Home page. Also, be sure to record your serial number in the area provided on this page.
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