4.1

Out of 8 Ratings

Owner's of the Humminbird Marine GPS System 4087301 gave it a score of 4.1 out of 5. Here's how the scores stacked up:
  • Reliability

    4.14 out of 5
  • Durability

    4.29 out of 5
  • Maintenance

    4.0 out of 5
  • Performance

    4.0 out of 5
  • Ease of Use

    4.14 out of 5
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5. Attach the Control Head to the Base
Follow these steps to attach the control head to the already-assembled base:
NOTE: The transducer cable and power cable should be routed prior to securing the
mounting bracket to the deck.
1. Apply marine-grade silicone sealant to the drilled holes for the
mounting bracket.
2. Place the mounting bracket on the mounting surface, aligning with the
drilled holes.
3. Insert the four #8 Phillips countersink wood screws into the mounting
holes. Hand tighten only!
4. Insert the thumbknob bolt through the pivot knuckle on the control
head (Figure 7).
Pivot Knuckle
Gimbal Knob
Thumbknob Bolt
Figure7
Mounting Holes
6
Fixed Control Head Installation