background image

5

Remove the hatch on the front of the pedestal by loosening 

the screw and lifting the hatch off of the hinges.

6

Apply the included Petrolatum Primer to one half of the 

threads of the four threaded rods.

7

Insert the ends of the threaded rods coated in Petrolatum 

Primer into the pedestal.

8

Tighten the threaded rods using a 5 mm hex wrench.
To avoid damaging the pedestal, you should stop tightening 

the threaded rods when they no longer turn easily.

Mounting the Radar

Before you can mount the radar, you must first select a 

mounting location, and prepare the mounting surface and the 

radar (

Preparing the Surface and the Radar for Mounting

page 1

).

1

Take note of which end of the pedestal you plan to mount 

facing the bow along the bow-stern axis.
If the hatch side is facing the bow, you must adjust the front-

of-boat offset on the chartplotter to receive an accurate radar 

reading (

Front-of-Boat Offset

, page 4

).

2

Hoist the radar into position, and carefully lower it onto the 

mounting surface, feeding the threaded rods through the 

holes.

3

From under the mounting surface, place the shoulder 

washers 

À

 on the threaded rods and feed them into the 

mounting surface so they fit securely.

4

Place the flat washers 

Á

, lock washers 

Â

, and hex nuts 

Ã

 on 

the threaded rods.

5

Torque the hex nuts to 1.5 kgf-m (130 lbf-in. [11 lbf-ft.]) to 

securely fasten the radar to the surface without damaging the 

radar or the mounting hardware.

Installing the Antenna

Before you can install the antenna on the radar, you must 

securely mount the pedestal (

Mounting the Radar

, page 2

).

1

Remove the protective cover from the waveguide on the top 

of the pedestal.

2

Align the waveguide 

À

 on the pedestal with the socket on the 

bottom of the antenna 

Á

, and slide the antenna onto the 

pedestal.

3

Secure the antenna to the pedestal using the included hex 

bolts 

Â

 and spring washers 

Ã

.

4

Torque the hex bolts to 0.81 kgf-m (70 lfb-in. [6 lbf-ft.]) to 

fasten the antenna to the pedestal without damaging the 

antenna or the mounting hardware.

Cable Considerations

It may be necessary to drill 32 mm (1

1

/

4

) in. holes for routing the 

power or network cables.
• When routing both the power and network cables through the 

same hole, you must route the network cable before the 

power cable.

• You must apply marine sealant to the hole after the cables 

are in place to ensure a waterproof seal.

2

Summary of Contents for GMR 424 xHD2

Page 1: ...Considerations When selecting a mounting location observe these considerations It is highly recommended that the device is mounted out of range of people with the vertical beam width above head heigh...

Page 2: ...nting surface place the shoulder washers on the threaded rods and feed them into the mounting surface so they fit securely 4 Place the flat washers lock washers and hex nuts on the threaded rods 5 Tor...

Page 3: ...tage converter unit to properly power the device If your model is packaged with a voltage converter it must be installed in order for your radar to function If your model is not packaged with a voltag...

Page 4: ...are controlled with your Garmin chartplotter See the Radar section of your chartplotter s manual for operating instructions To download the latest manual go to www garmin com support Software Update...

Page 5: ...t Up or Down to adjust the offset Setting a Custom Park Position If you have more than one radar on your boat you must be viewing the radar screen for the radar you want to adjust By default the anten...

Page 6: ...protected against heavy seas Bearing accuracy 0 25 degrees Electrical Specifications Specification Measurement Minimum safe operating distance GMR 424 xHD2 100 W m 1 22 m 48 in 10 W m 3 90 m 154 in G...

Page 7: ...ble Extensions section of these instructions to make sure the correct wire gauge is used Power Cable Extensions page 4 If the radar uses a voltage converter it may be connected through an incompatible...

Page 8: ...2014GarminLtd oritssubsidiaries support garmin com TA 2013 1848...

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