Humminbird HELIX Series Installation Manual page 2

HELIX® SERIES IN-DASH MOUNTING Installation Guide
1. Review the instructions, measurements, and cutting options indicated on the In-dash Mounting
Template.
2. Tape the template to the chosen in-dash mounting location.
3. Using the template, select the cutting method that is best for your boat:
Δ Drill one entry hole away from the main cut line that is large enough to insert the blade of
your cutting tool.
OR
Δ Drill a corner hole away from the main cut line using a drill bit that will create a hole as close
to a diameter of .5 inches (12.7 mm) as possible. Repeat for the other three corners as
indicated on the template. Use one of the corner holes as an entry hole, or drill an additional
entry hole away from the main cut line.
4. Carefully begin cutting toward the dotted cut line, and continue cutting to the inside of the line
around the template.
5. Test the Mounting Hole: Install the control head in the mounting hole to test the fit. Make
adjustments to the mounting hole as needed. Remove the template when finished.
6. Thoroughly clean and deburr the mounting hole.
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| Install the In-Dash Mount Bracket
To install the in-dash mount bracket, you will need the gimbal knobs included with your control head.
See your control head installation guide for more details.
Preparation
1. Place the control head, with the screen facing down, on a towel or cloth on a stable and level
surface.
Install the Ratchets
1. Hold the in-dash mount bracket so the arms on the bracket are pointing up.
2. On the inside of the ratchet, locate the ribs (two semicircles) and align them with the openings
on the inside of the bracket arm (see the illustration Installing the Ratchets on the In-Dash
Mount Bracket). With this orientation, install the ratchet on the bracket arm.
3. Repeat: Repeat step 2 to install the second ratchet.
Install the Gimbal Knobs
1. Holding the ratchets in place, lower the bracket (with the bracket arms pointing down) onto the
back of the control head. Align the ratchets on the bracket arms with the openings on the sides
of the control head.
NOTE: The in-dash mount bracket is symmetrical. Therefore, it does not require a specific
installation orientation.
2. Confirm the bracket is parallel with the face of the control head (see the illustration Installing
the In-Dash Mount Bracket on the Control Head). Thread a gimbal knob into the opening on the
control head and tighten using four to five rotations.
3. Repeat: Repeat step 2 to install the second gimbal knob.
4. Confirm the bracket is still parallel to the face of the control head and hand-tighten both gimbal
knobs to secure the bracket to the control head.
Install the Bolts
1. Place the hardware onto each bolt in the following order: nut and washer. See the illustration
Installing the In-Dash Mount Bracket on the Control Head.
2. Insert the bolts into the threaded bolt holes on the bracket. Hand-tighten the bolts until there is
enough of the bolt exposed on the other side of the bracket to install the end cap. You will fully
tighten the bolts in a later procedure.
532365-3_A
Installing the Rachets on the
In-Dash Mount Bracket
ratchets
Align the ribs with
the openings on
the inside of the
bracket arm.
bracket arm
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