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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Installation Overview
Before you start installation, we encourage you to read these instructions
carefully in order to get the full benefit from your PiranhaMAX.
There are three basic installation tasks that you must perform for the
PiranhaMAX:
Installing the Control Head
Installing the Transducer
Testing the complete installation and locking the transducer position.
NOTE: In addition to the hardware supplied with your transducer, you will need a
powered hand drill and various drill bits, various hand tools, including a ruler or
straightedge, a level, a 12" plumb line (weighted string or monofilament line), marker or
pencil, safety glasses and dust mask, and marine-grade silicone sealant.
NOTE: If you have purchased a PiranhaMAX Portable unit, proceed to
PiranhaMAX Portable Case Assembly for installation instructions. If you are
planning a fixed installation, proceed to Fixed Control Head Installation.
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Installation Overview