GPSMAP
®
74xx/76xx
Series
Installation Instructions
Important Safety Information
WARNING
See the
Important Safety and Product Information
guide in the
product box for product warnings and other important
information.
When connecting the power cable, do not remove the in-line
fuse holder. To prevent the possibility of injury or product
damage caused by fire or overheating, the appropriate fuse
must be in place as indicated in the product specifications. In
addition, connecting the power cable without the appropriate
fuse in place voids the product warranty.
CAUTION
Always wear safety goggles, ear protection, and a dust mask
when drilling, cutting, or sanding.
NOTICE
When drilling or cutting, always check what is on the opposite
side of the surface.
To obtain the best performance and to avoid damage to your
boat, install the device according to these instructions.
Read all installation instructions before proceeding with the
installation. If you experience difficulty during the installation,
contact Garmin
®
Product Support.
Contacting Garmin Support
• Go to
for help and information, such as
product manuals, frequently asked questions, videos, and
customer support.
• In the USA, call 913-397-8200 or 1-800-800-1020.
• In the UK, call 0808 238 0000.
• In Europe, call +44 (0) 870 850 1241.
Software Update
You may need to update the chartplotter software after
installation. For the instructions on how to update the software,
see the owner's manual at
Tools Needed
• Drill and drill bits
◦ Bail mount: drill bits appropriate for the surface and
hardware
◦ Flush mount: 13 mm (
1
/
2
in.) drill bit, 7.2 mm (
5
/
16
in.), and
3.5 mm (
1
/
8
in.) drill bit
• #2 Phillips screwdriver
• Jigsaw or rotary tool
• File and sandpaper
• Marine sealant (recommended)
Mounting Considerations
NOTICE
This device should be mounted in a location that is not exposed
to extreme temperatures or conditions. The temperature range
for this device is listed in the product specifications. Extended
exposure to temperatures exceeding the specified temperature
range, in storage or operating conditions, may cause device
failure. Extreme-temperature-induced damage and related
consequences are not covered by the warranty.
When selecting a mounting location, you should observe these
considerations.
• The location should provide optimal viewing as you operate
your boat.
• The location should allow for easy access to all device
interfaces, such as the keypad, touchscreen, and card
reader, if applicable.
• The location must be strong enough to support the weight of
the device and protect it from excessive vibration or shock.
• To avoid interference with a magnetic compass, the device
should not be installed closer to a compass than the
compass-safe distance value listed in the product
specifications.
• The location must allow room for the routing and connection
of all cables.
• The location must not be a flat, horizontal surface. The
location should be in a vertical angle.
The location and viewing angle should be tested before you
install the device. High viewing angles from above and below
the display may result in a poor image.
Bail Mounting the Device
NOTICE
If you are mounting the bracket on fiberglass with screws, it is
recommended to use a countersink bit to drill a clearance
counterbore through only the top gel-coat layer. This will help to
avoid cracking in the gel-coat layer when the screws are
tightened.
The bail-mounting hardware (screws and washers, or nuts,
washers, and bolts) is not included. The bail mount bracket is
included in some models. Before you can bail mount the device,
you must purchase a bail mount bracket, if necessary. You must
also purchase mounting hardware that fits the holes in the bail
mount bracket and securely attaches it to your specific mounting
surface. The size of the pilot holes required depends on the
mounting hardware you purchase.
1
Using the bail mount bracket as a template, mark the
location of the four pilot holes .
GUID-6E54DB9C-BAE7-4C40-90F3-2D22E623703D v5
October 2020
