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7-4 Gimbal Installation
1.
Hold the mounting gimbal at the chosen location and use a soft pencil to mark the screw hole positions
onto the mounting surface.
2.
If you can't reach behind the mounting surface to attach the nuts, use the self-tapping screws instead
of the flat screws shown in the picture. If you're drilling into fibreglass, use a drill bit smaller than 3/16"
(5mm) to drill the pilot holes.
Otherwise, drill the four screw holes where marked, using a 3/16" (5mm) drill bit. Drill completely through
the mounting surface.
3.
Use a Philips screwdriver and the set of four flat screws, spring washers, plain washers, and nuts to attach
the mounting gimbal to the location site.
4.
Slide the radio into the mounting gimbal.
5.
Insert the two mounting knobs through the holes and tighten them sufficiently to hold the radio at the
desired viewing angle.
7-5 Change the Viewing Angle
The viewing angle on the gimbal mount has a 20º tilt range. To change the current viewing angle on the
gimbal mount:
1.
Support the radio, then cautiously loosen the mounting knobs until the radio can be moved.
2.
Re-position the radio then tighten the mounting knobs again.
7-6 Recessed Installation
1.
Tape the installation template onto the chosen location site.
2.
Cut out the area marked by the solid dark line. (The dashed line indicates the total area that will be
covered by the radio fascia after installation.)
3.
Remove the installation template and slide the radio into the cavity.
4. Working from the rear of the bulkhead, align the racheted outstand on each side of the radio with the
central hole in each mounting bracket.
Northstar Explorer VHF Series: 721/725 Operation and Installation Manual
59
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