Humminbird HELIX Series Mounting Installation Manual page 2

HELIX® Series In-Dash Mounting Installation Guide
3. Install the Bracket
To install the in-dash mount bracket, you will need the gimbal knobs included with your control head.
1. Place the control head on a towel or cloth, with the screen facing down, on a stable and level surface.
2. See the illustration Installing the Bolts. Install the carriage bolts (1/4" - 20) onto the bracket with the
flat washer (1/4" x 3/4") and seal washer (1/4" x 1/2") in the order shown in the illustration. Hand tighten
the washers fully until they are flat and secure on the bracket.
3. Line up the bracket arms with the ratchets on the side of the control head. The opening in the bracket
arms should face up (away from the control head ports). Adjust the bracket so it is parallel with the
control head screen. See the illustration Installing the Bracket.
4. Install the gimbal knobs into each side of the control head. Hand-tighten only! See the illustration
Installing the Bracket.
4. Install the Control Head
1. From the front of the dashboard, with the control head screen facing out, carefully lower the control
head into the mounting hole.
NOTE: If the control head will not fit through the mounting hole, remove one of the gimbal knobs and angle
the control head into the mounting hole. Replace the gimbal knob before proceeding to step 2.
2. Press down lightly on the control head. Confirm the control head is centered and flush against the
dashboard. Make adjustments, as needed.
3. From under the dashboard, insert the vertical bracket holes over the bolts. Ensure the top and bottom
of the vertical bracket is evenly aligned and flush against the dash. See the illustration Installing the
Vertical Bracket.
NOTE: If your vertical bracket has multiple bracket holes, use the center bracket holes.
4. Install a flat washer (1/4" x 3/4") and hex nut (1/4" - 20) onto each carriage bolt. See the illustration
Installing the Vertical Bracket. Use a 7/16" adjustable wrench to hand-tighten the nuts until the
assembly is secured. Then tighten no more than 2 additional turns. Hand-tighten only!
Do NOT over-tighten the hex nuts. The bracket should remain straight without bending.
Installing the Vertical Bracket
dashboard
(partial view)
vertical bracket
flat
washer
hex nut
532464-3_A
Installing the Bolts
carriage bolt
flat seal
washer washer
Installing the Bracket
gimbal
knob
opening in bracket
arms facing up
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