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GMR18, GMR20/40, GMR21/41 INSTALLATION GUIDE

*If you have purchased a GMR21/41, follow the standard radar mounting instructions.

Thank you for purchasing our SEAVIEW GARMIN MOUNT.  Please read and understand the installation guide before 
installing your SEAVIEW Garmin Mount.  PYI always recommends an experienced industry professional install, 
inspect, and certify the installation.   

SEAVIEW GARMIN MOUNT

Our SEAVIEW Garmin mount was designed to fit the 

GMR20

 and 

GMR40

 28” radomes.  If  you have purchased a

 

GMR21/41

  radome our mount will still work nicely.   To properly install your 

GMR18, GMR20

 or 

GMR40

 to our 

Seaview mount, you  will be required to rotate the radome 180 degrees

.

 Once installed the Garmin 

GMR18/20/40

 

software

 

can simply adjust the radar heading by 180 degrees.   To accomplish this, please follow the instructions in 

your 

GMR18, GMR20, GMR40 Owner’s Manual as duplicated on our 2nd page.

The following 

illustrate

 how the 

GMR18, GMR2

0

 and the GMR40 should look once installed to our SEAVIEW Garmin mounts. 

See Fig.1, 2, 3 and 4.

Fig.3

CORRECT

INCORRECT

Fig.2

CORRECT

INCORRECT

SEAVIEW GARMIN MOUNT

INC.

12532 Beverly Park Road

Lynnwood, WA 98087

Office (425) 355-3669

Fax (425) 355-3661

Email: [email protected]

1-800-523-7558

www.pyiinc.com

GMR18, GMR20, GMR40 on Aft leaning Power Mount

Fig.4

. Shows the side profile of

 

GMR18, GMR20

 or 

GMR40

 on 

our SEAVIEW Aft leaning Power 
Mount rotated 180 degrees for 
CORRECT and not rotated for 
INCORRECT.

GMR18, GMR20, GMR40 on Fwd leaning Power Mount

GMR18, GMR20, GMR40 on Pole Top Mount

Fig.1

Fig.5

. Shows the side profile of

 

GMR18, GMR20

 or 

GMR40

 on 

our SEAVIEW Forward leaning 
Power Mount rotated 180 
degrees for CORRECT and not 
rotated for INCORRECT.

Fig.6

. Shows the side profile of

 

GMR18, GMR20

 or 

GMR40

 on 

our SEAVIEW Pole Top rotated 
180 degrees for CORRECT and 
not rotated for INCORRECT.

CORRECT

INCORRECT

Fig.4

CORRECT

INCORRECT

GMR18, GMR20, GMR40 on Pole Top Mount

Fig.7

. Shows the side profile of

 

GMR18, GMR20

 or 

GMR40

 on 

our SEAVIEW Mast platform 
rotated 180 degrees for 
CORRECT and not rotated for 
INCORRECT.

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